./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/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_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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-9bd2c7f [2023-11-19 08:00:37,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:37,515 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:00:37,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:37,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:37,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:37,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:37,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:37,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:37,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:37,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:37,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:37,597 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:37,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:37,599 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:37,599 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:37,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:37,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:37,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:37,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:37,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:37,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:37,602 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:37,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:37,603 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:37,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:37,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:37,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:37,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:37,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:37,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:37,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:37,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:37,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:37,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:37,616 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:37,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:37,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:37,617 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:37,617 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_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b28c8175bc39dd1c459be6d9349fe3be895f115cd8cddc9719a89a6e0edbf727 [2023-11-19 08:00:37,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:38,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:38,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:38,029 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:38,029 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:38,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i [2023-11-19 08:00:41,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:41,459 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:41,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i [2023-11-19 08:00:41,473 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/data/272185961/3e38211c704246c29d7fc413c8f740c4/FLAG2e4f7832e [2023-11-19 08:00:41,500 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/data/272185961/3e38211c704246c29d7fc413c8f740c4 [2023-11-19 08:00:41,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:41,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:41,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:41,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:41,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:41,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:41,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf40cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41, skipping insertion in model container [2023-11-19 08:00:41,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:41,586 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:41,744 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_994c1f17-832d-4f03-be17-b20950eddad5/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i[916,929] [2023-11-19 08:00:41,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:41,828 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:41,839 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_994c1f17-832d-4f03-be17-b20950eddad5/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-89.i[916,929] [2023-11-19 08:00:41,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:41,891 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:41,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41 WrapperNode [2023-11-19 08:00:41,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:41,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:41,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:41,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:41,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:41,914 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,010 INFO L138 Inliner]: procedures = 26, calls = 143, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 417 [2023-11-19 08:00:42,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:42,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:42,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:42,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:42,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:42,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:42,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:42,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:42,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (1/1) ... [2023-11-19 08:00:42,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:42,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:42,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:42,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:00:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:00:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:42,360 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:42,363 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:43,014 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:43,034 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:43,035 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:00:43,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:43 BoogieIcfgContainer [2023-11-19 08:00:43,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:43,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:43,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:43,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:43,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:41" (1/3) ... [2023-11-19 08:00:43,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bf652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:43, skipping insertion in model container [2023-11-19 08:00:43,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:41" (2/3) ... [2023-11-19 08:00:43,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bf652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:43, skipping insertion in model container [2023-11-19 08:00:43,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:43" (3/3) ... [2023-11-19 08:00:43,058 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-89.i [2023-11-19 08:00:43,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:43,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:00:43,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:43,173 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=LoopHeads, 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;@72cc1ea6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:43,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:00:43,179 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) [2023-11-19 08:00:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 08:00:43,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:43,202 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] [2023-11-19 08:00:43,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:43,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash 983671971, now seen corresponding path program 1 times [2023-11-19 08:00:43,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:43,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431585524] [2023-11-19 08:00:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:43,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:43,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431585524] [2023-11-19 08:00:43,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:00:43,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197590983] [2023-11-19 08:00:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:43,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:43,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:43,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:43,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:43,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:00:43,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-19 08:00:43,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:43,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197590983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:43,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:43,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:43,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737784855] [2023-11-19 08:00:43,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:43,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:43,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:44,003 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) [2023-11-19 08:00:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:44,060 INFO L93 Difference]: Finished difference Result 193 states and 303 transitions. [2023-11-19 08:00:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:44,062 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 [2023-11-19 08:00:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:44,074 INFO L225 Difference]: With dead ends: 193 [2023-11-19 08:00:44,074 INFO L226 Difference]: Without dead ends: 96 [2023-11-19 08:00:44,080 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 [2023-11-19 08:00:44,083 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 [2023-11-19 08:00:44,084 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] [2023-11-19 08:00:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-19 08:00:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-19 08:00:44,127 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) [2023-11-19 08:00:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions. [2023-11-19 08:00:44,130 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 109 [2023-11-19 08:00:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:44,131 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions. [2023-11-19 08:00:44,132 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) [2023-11-19 08:00:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions. [2023-11-19 08:00:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 08:00:44,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:44,135 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] [2023-11-19 08:00:44,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:44,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:00:44,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:44,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:44,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1135548361, now seen corresponding path program 1 times [2023-11-19 08:00:44,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:44,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938195578] [2023-11-19 08:00:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:44,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:44,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:44,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183906616] [2023-11-19 08:00:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:44,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:44,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:44,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:44,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:00:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:44,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:00:44,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-19 08:00:44,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:44,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:44,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938195578] [2023-11-19 08:00:44,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:44,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183906616] [2023-11-19 08:00:44,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183906616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:44,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:44,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:44,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966430064] [2023-11-19 08:00:44,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:44,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:44,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:44,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:44,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:44,768 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) [2023-11-19 08:00:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:44,825 INFO L93 Difference]: Finished difference Result 201 states and 292 transitions. [2023-11-19 08:00:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:44,826 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 [2023-11-19 08:00:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:44,829 INFO L225 Difference]: With dead ends: 201 [2023-11-19 08:00:44,829 INFO L226 Difference]: Without dead ends: 108 [2023-11-19 08:00:44,830 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 [2023-11-19 08:00:44,832 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 [2023-11-19 08:00:44,832 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] [2023-11-19 08:00:44,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-19 08:00:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 98. [2023-11-19 08:00:44,845 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) [2023-11-19 08:00:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 141 transitions. [2023-11-19 08:00:44,847 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 141 transitions. Word has length 109 [2023-11-19 08:00:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:44,849 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 141 transitions. [2023-11-19 08:00:44,849 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) [2023-11-19 08:00:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 141 transitions. [2023-11-19 08:00:44,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 08:00:44,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:44,852 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] [2023-11-19 08:00:44,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:45,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 08:00:45,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:45,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:45,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1815606731, now seen corresponding path program 1 times [2023-11-19 08:00:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:45,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107073717] [2023-11-19 08:00:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:45,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470646730] [2023-11-19 08:00:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:45,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:45,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:00:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:45,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:00:45,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-19 08:00:45,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:45,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:45,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107073717] [2023-11-19 08:00:45,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470646730] [2023-11-19 08:00:45,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470646730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:45,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:45,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:45,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053026413] [2023-11-19 08:00:45,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:45,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:45,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:45,395 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) [2023-11-19 08:00:45,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:45,438 INFO L93 Difference]: Finished difference Result 201 states and 290 transitions. [2023-11-19 08:00:45,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:45,439 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 [2023-11-19 08:00:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:45,441 INFO L225 Difference]: With dead ends: 201 [2023-11-19 08:00:45,441 INFO L226 Difference]: Without dead ends: 106 [2023-11-19 08:00:45,458 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 [2023-11-19 08:00:45,459 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 [2023-11-19 08:00:45,460 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] [2023-11-19 08:00:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-19 08:00:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2023-11-19 08:00:45,471 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) [2023-11-19 08:00:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 143 transitions. [2023-11-19 08:00:45,473 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 143 transitions. Word has length 109 [2023-11-19 08:00:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:45,474 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 143 transitions. [2023-11-19 08:00:45,474 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) [2023-11-19 08:00:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 143 transitions. [2023-11-19 08:00:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 08:00:45,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:45,478 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] [2023-11-19 08:00:45,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 08:00:45,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 08:00:45,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:45,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash -704353203, now seen corresponding path program 1 times [2023-11-19 08:00:45,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:45,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631159556] [2023-11-19 08:00:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:45,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032336659] [2023-11-19 08:00:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:45,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:45,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:45,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:00:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:45,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-19 08:00:45,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:47,683 INFO L378 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 [2023-11-19 08:00:48,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,135 INFO L378 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 [2023-11-19 08:00:48,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,404 INFO L378 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 [2023-11-19 08:00:48,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,656 INFO L378 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 [2023-11-19 08:00:48,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 08:00:48,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,854 INFO L378 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 25 treesize of output 23 [2023-11-19 08:00:48,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:48,883 INFO L378 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 30 treesize of output 23 [2023-11-19 08:00:49,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:49,038 INFO L378 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 42 treesize of output 26 [2023-11-19 08:00:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-19 08:00:49,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:49,374 WARN L854 $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 [2023-11-19 08:00:49,448 WARN L854 $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 [2023-11-19 08:00:49,543 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (= (mod (select (select |c_#memory_int| c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (.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 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 .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 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 .cse2 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse2 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))))) .cse3) (or (not .cse3) (and (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 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 .cse4 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse4 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 ((.cse5 (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 .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) 0)))))))) is different from false [2023-11-19 08:00:49,763 WARN L854 $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 [2023-11-19 08:00:50,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:50,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631159556] [2023-11-19 08:00:50,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:50,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032336659] [2023-11-19 08:00:50,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032336659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:50,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:50,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-19 08:00:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339686194] [2023-11-19 08:00:50,192 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:50,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 08:00:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 08:00:50,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=486, Unknown=4, NotChecked=188, Total=756 [2023-11-19 08:00:50,196 INFO L87 Difference]: Start difference. First operand 100 states and 143 transitions. Second operand has 20 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 17 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) [2023-11-19 08:00:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:52,199 INFO L93 Difference]: Finished difference Result 356 states and 511 transitions. [2023-11-19 08:00:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 08:00:52,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 17 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 [2023-11-19 08:00:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:52,203 INFO L225 Difference]: With dead ends: 356 [2023-11-19 08:00:52,204 INFO L226 Difference]: Without dead ends: 259 [2023-11-19 08:00:52,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=270, Invalid=1224, Unknown=4, NotChecked=308, Total=1806 [2023-11-19 08:00:52,208 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 778 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:52,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 903 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 08:00:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-19 08:00:52,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 118. [2023-11-19 08:00:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 102 states have (on average 1.3823529411764706) internal successors, (141), 102 states have internal predecessors, (141), 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) [2023-11-19 08:00:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 167 transitions. [2023-11-19 08:00:52,229 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 167 transitions. Word has length 109 [2023-11-19 08:00:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:52,230 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 167 transitions. [2023-11-19 08:00:52,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 17 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) [2023-11-19 08:00:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 167 transitions. [2023-11-19 08:00:52,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 08:00:52,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:52,234 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] [2023-11-19 08:00:52,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:52,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:52,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:52,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash -382462684, now seen corresponding path program 1 times [2023-11-19 08:00:52,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:52,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703320878] [2023-11-19 08:00:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:52,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:52,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:52,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689133616] [2023-11-19 08:00:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:52,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:52,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:52,510 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:52,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:00:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:52,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-19 08:00:52,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:54,331 INFO L378 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 [2023-11-19 08:00:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:54,811 INFO L378 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 [2023-11-19 08:00:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,103 INFO L378 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 [2023-11-19 08:00:55,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-19 08:00:55,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2023-11-19 08:00:55,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 52 [2023-11-19 08:00:55,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:55,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:56,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 31 [2023-11-19 08:00:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-19 08:00:56,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:56,370 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| c_~var_1_1_Pointer~0.base))) (and (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_216 (Array Int Int)) (v_ArrVal_217 (Array Int Int))) (let ((.cse1 (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_216) c_~var_1_15_Pointer~0.base v_ArrVal_217))) (let ((.cse0 (mod (select (select .cse1 c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset) 65536))) (< (div .cse0 (mod (select (select .cse1 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256)) .cse0)))) (not |c_ULTIMATE.start_step_#t~short18#1|)) (or |c_ULTIMATE.start_step_#t~short18#1| (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_216 (Array Int Int)) (v_ArrVal_217 (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 0)) c_~var_1_13_Pointer~0.base v_ArrVal_216) c_~var_1_15_Pointer~0.base v_ArrVal_217))) (let ((.cse3 (mod (select (select .cse4 c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset) 65536))) (< (div .cse3 (mod (select (select .cse4 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256)) .cse3))))))) is different from false [2023-11-19 08:00:56,411 WARN L854 $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 .cse0 (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_216 (Array Int Int)) (v_ArrVal_217 (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 1)) c_~var_1_13_Pointer~0.base v_ArrVal_216) c_~var_1_15_Pointer~0.base v_ArrVal_217))) (let ((.cse1 (mod (select (select .cse2 c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset) 65536))) (< (div .cse1 (mod (select (select .cse2 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256)) .cse1))))) (or (not .cse0) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_216 (Array Int Int)) (v_ArrVal_217 (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_216) c_~var_1_15_Pointer~0.base v_ArrVal_217))) (let ((.cse4 (mod (select (select .cse5 c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset) 65536))) (< (div .cse4 (mod (select (select .cse5 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256)) .cse4))))))) is different from false [2023-11-19 08:00:58,743 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| c_~var_1_14_Pointer~0.base))) (and (forall ((v_z_2 Int)) (or (forall ((~var_1_3_Pointer~0.offset Int) (v_y_2 Int) (~var_1_14_Pointer~0.offset Int)) (let ((.cse2 (store |c_#memory_int| c_~var_1_14_Pointer~0.base (store .cse3 ~var_1_14_Pointer~0.offset (+ v_z_2 (* 65536 v_y_2)))))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_216 (Array Int Int)) (v_ArrVal_217 (Array Int Int))) (let ((.cse1 (store (store (store .cse2 c_~var_1_1_Pointer~0.base (store (select .cse2 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_216) c_~var_1_15_Pointer~0.base v_ArrVal_217))) (let ((.cse0 (mod (select (select .cse1 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset) 65536))) (< (div .cse0 (mod (select (select .cse1 c_~var_1_3_Pointer~0.base) ~var_1_3_Pointer~0.offset) 256)) .cse0)))) (< v_z_2 (+ (div v_z_2 (mod (select (select .cse2 c_~var_1_3_Pointer~0.base) ~var_1_3_Pointer~0.offset) 256)) 1)) (= (mod (select (select .cse2 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))) (< v_z_2 0) (< 65535 v_z_2))) (forall ((v_z_2 Int)) (or (forall ((~var_1_3_Pointer~0.offset Int) (v_y_2 Int) (~var_1_14_Pointer~0.offset Int)) (let ((.cse4 (store |c_#memory_int| c_~var_1_14_Pointer~0.base (store .cse3 ~var_1_14_Pointer~0.offset (+ v_z_2 (* 65536 v_y_2)))))) (or (not (= (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_216 (Array Int Int)) (v_ArrVal_217 (Array Int Int))) (let ((.cse6 (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 0)) c_~var_1_13_Pointer~0.base v_ArrVal_216) c_~var_1_15_Pointer~0.base v_ArrVal_217))) (let ((.cse5 (mod (select (select .cse6 c_~var_1_14_Pointer~0.base) ~var_1_14_Pointer~0.offset) 65536))) (< (div .cse5 (mod (select (select .cse6 c_~var_1_3_Pointer~0.base) ~var_1_3_Pointer~0.offset) 256)) .cse5)))) (< v_z_2 (+ (div v_z_2 (mod (select (select .cse4 c_~var_1_3_Pointer~0.base) ~var_1_3_Pointer~0.offset) 256)) 1))))) (< v_z_2 0) (< 65535 v_z_2))))) is different from false [2023-11-19 08:00:59,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:59,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703320878] [2023-11-19 08:00:59,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:59,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689133616] [2023-11-19 08:00:59,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689133616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:59,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:59,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-19 08:00:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126930220] [2023-11-19 08:00:59,148 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:59,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 08:00:59,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:59,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:00:59,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=311, Unknown=16, NotChecked=114, Total=506 [2023-11-19 08:00:59,151 INFO L87 Difference]: Start difference. First operand 118 states and 167 transitions. Second operand has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 13 states have internal predecessors, (56), 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) [2023-11-19 08:01:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:01,687 INFO L93 Difference]: Finished difference Result 339 states and 483 transitions. [2023-11-19 08:01:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:01:01,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 13 states have internal predecessors, (56), 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 109 [2023-11-19 08:01:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:01,692 INFO L225 Difference]: With dead ends: 339 [2023-11-19 08:01:01,692 INFO L226 Difference]: Without dead ends: 224 [2023-11-19 08:01:01,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=198, Invalid=854, Unknown=16, NotChecked=192, Total=1260 [2023-11-19 08:01:01,694 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 693 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:01,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 871 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 08:01:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-19 08:01:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 118. [2023-11-19 08:01:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 102 states have (on average 1.3725490196078431) internal successors, (140), 102 states have internal predecessors, (140), 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) [2023-11-19 08:01:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2023-11-19 08:01:01,711 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 109 [2023-11-19 08:01:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:01,712 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2023-11-19 08:01:01,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 13 states have internal predecessors, (56), 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) [2023-11-19 08:01:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2023-11-19 08:01:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 08:01:01,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:01,714 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] [2023-11-19 08:01:01,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:01,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:01,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:01,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash 457002274, now seen corresponding path program 1 times [2023-11-19 08:01:01,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:01,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971661568] [2023-11-19 08:01:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:01,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988627042] [2023-11-19 08:01:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:01,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:02,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:01:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:02,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 08:01:02,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:02,657 INFO L378 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 [2023-11-19 08:01:02,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:02,964 INFO L378 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 [2023-11-19 08:01:03,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:03,172 INFO L378 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 [2023-11-19 08:01:03,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:03,335 INFO L378 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 [2023-11-19 08:01:03,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:03,501 INFO L378 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 [2023-11-19 08:01:03,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:03,623 INFO L378 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 [2023-11-19 08:01:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 1 proven. 283 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 08:01:03,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:03,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971661568] [2023-11-19 08:01:03,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:03,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988627042] [2023-11-19 08:01:03,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988627042] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:03,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:03,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 08:01:03,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514829586] [2023-11-19 08:01:03,746 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:03,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 08:01:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 08:01:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=175, Unknown=5, NotChecked=0, Total=240 [2023-11-19 08:01:03,751 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 08:01:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:04,550 INFO L93 Difference]: Finished difference Result 243 states and 339 transitions. [2023-11-19 08:01:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:01:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 109 [2023-11-19 08:01:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:04,555 INFO L225 Difference]: With dead ends: 243 [2023-11-19 08:01:04,555 INFO L226 Difference]: Without dead ends: 128 [2023-11-19 08:01:04,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=471, Unknown=5, NotChecked=0, Total=650 [2023-11-19 08:01:04,557 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 156 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:04,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 504 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:01:04,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-19 08:01:04,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2023-11-19 08:01:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 106 states have (on average 1.3584905660377358) internal successors, (144), 106 states have internal predecessors, (144), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 08:01:04,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2023-11-19 08:01:04,587 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 109 [2023-11-19 08:01:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:04,588 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2023-11-19 08:01:04,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 08:01:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2023-11-19 08:01:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 08:01:04,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:04,592 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] [2023-11-19 08:01:04,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:04,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:04,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:04,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash 238147556, now seen corresponding path program 1 times [2023-11-19 08:01:04,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:04,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600512846] [2023-11-19 08:01:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:04,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:04,849 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153125408] [2023-11-19 08:01:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:04,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:04,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:04,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:04,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:01:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:05,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-19 08:01:05,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:05,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-19 08:01:05,997 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 08:01:05,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-19 08:01:06,349 INFO L378 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 [2023-11-19 08:01:06,608 INFO L378 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 [2023-11-19 08:01:06,796 INFO L378 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 [2023-11-19 08:01:06,981 INFO L378 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 [2023-11-19 08:01:07,172 INFO L378 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 [2023-11-19 08:01:07,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:07,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:07,291 INFO L378 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 [2023-11-19 08:01:07,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:07,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:07,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:07,348 INFO L378 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 [2023-11-19 08:01:07,392 INFO L378 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 [2023-11-19 08:01:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 08:01:07,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:07,513 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int)) (v_ArrVal_314 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_314) c_~var_1_15_Pointer~0.base v_ArrVal_315))) (let ((.cse0 (mod (select (select .cse1 c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset) 65536))) (< .cse0 (+ (div .cse0 (mod (select (select .cse1 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256)) 1))))) is different from false [2023-11-19 08:01:07,524 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_315 (Array Int Int)) (v_ArrVal_314 (Array Int Int)) (v_ArrVal_313 (Array Int Int))) (let ((.cse1 (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_313) c_~var_1_13_Pointer~0.base v_ArrVal_314) c_~var_1_15_Pointer~0.base v_ArrVal_315))) (let ((.cse0 (mod (select (select .cse1 c_~var_1_14_Pointer~0.base) c_~var_1_14_Pointer~0.offset) 65536))) (< .cse0 (+ (div .cse0 (mod (select (select .cse1 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256)) 1))))) is different from false [2023-11-19 08:01:08,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:08,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600512846] [2023-11-19 08:01:08,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:08,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153125408] [2023-11-19 08:01:08,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153125408] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:08,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:08,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 08:01:08,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160229574] [2023-11-19 08:01:08,180 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:08,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 08:01:08,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 08:01:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=223, Unknown=13, NotChecked=66, Total=380 [2023-11-19 08:01:08,182 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2023-11-19 08:01:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:09,418 INFO L93 Difference]: Finished difference Result 310 states and 431 transitions. [2023-11-19 08:01:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:09,420 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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 109 [2023-11-19 08:01:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:09,422 INFO L225 Difference]: With dead ends: 310 [2023-11-19 08:01:09,422 INFO L226 Difference]: Without dead ends: 190 [2023-11-19 08:01:09,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=297, Unknown=14, NotChecked=78, Total=506 [2023-11-19 08:01:09,424 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 745 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:09,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 491 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:01:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-19 08:01:09,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 140. [2023-11-19 08:01:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 119 states have (on average 1.3445378151260505) internal successors, (160), 120 states have internal predecessors, (160), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:01:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 192 transitions. [2023-11-19 08:01:09,444 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 192 transitions. Word has length 109 [2023-11-19 08:01:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:09,445 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 192 transitions. [2023-11-19 08:01:09,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2023-11-19 08:01:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 192 transitions. [2023-11-19 08:01:09,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 08:01:09,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:09,447 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] [2023-11-19 08:01:09,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:09,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:09,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:09,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash 560038075, now seen corresponding path program 1 times [2023-11-19 08:01:09,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450557263] [2023-11-19 08:01:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:09,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:09,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781614239] [2023-11-19 08:01:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:09,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:09,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:09,689 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:09,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:01:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:09,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 08:01:09,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:10,940 INFO L378 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 [2023-11-19 08:01:11,213 INFO L378 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 [2023-11-19 08:01:11,422 INFO L378 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 [2023-11-19 08:01:11,604 INFO L378 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 [2023-11-19 08:01:11,769 INFO L378 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 [2023-11-19 08:01:11,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:11,890 INFO L378 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 [2023-11-19 08:01:11,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:11,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:11,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:11,964 INFO L378 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 [2023-11-19 08:01:11,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:11,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:11,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:11,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:11,991 INFO L378 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 [2023-11-19 08:01:12,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:01:12,173 INFO L378 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 [2023-11-19 08:01:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-19 08:01:12,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:12,496 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_364 (Array Int Int)) (v_ArrVal_365 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (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_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0))))) (forall ((v_ArrVal_364 (Array Int Int)) (v_ArrVal_365 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (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 [2023-11-19 08:01:12,817 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (= (mod (select (select |c_#memory_int| c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0)) (.cse2 (select |c_#memory_int| c_~var_1_1_Pointer~0.base))) (and (or .cse0 (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_365 (Array Int Int))) (let ((.cse1 (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_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (or (not (= (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) ~var_1_1_Pointer~0.offset) 256) 0)))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_365 (Array Int Int))) (let ((.cse3 (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_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (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)))))) (or (not .cse0) (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_365 (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 0)) c_~var_1_13_Pointer~0.base v_ArrVal_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (or (not (= (mod (select (select .cse4 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0)) (= (mod (select (select .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0)))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_365 (Array Int Int))) (let ((.cse5 (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_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (or (= (mod (select (select .cse5 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1) (= (mod (select (select .cse5 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0)))))))) is different from false [2023-11-19 08:01:12,993 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_361 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_361))) (or (= (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_364 (Array Int Int)) (v_ArrVal_365 (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_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (or (not (= (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) ~var_1_1_Pointer~0.offset) 256) 0))))))) (forall ((v_ArrVal_361 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_361))) (or (= (mod (select (select .cse2 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_364 (Array Int Int)) (v_ArrVal_365 (Array Int Int))) (let ((.cse3 (store (store (store .cse2 c_~var_1_1_Pointer~0.base (store (select .cse2 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (or (= (mod (select (select .cse3 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1) (= (mod (select (select .cse3 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0))))))) (forall ((v_ArrVal_361 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_361))) (or (not (= (mod (select (select .cse4 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_364 (Array Int Int)) (v_ArrVal_365 (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 0)) c_~var_1_13_Pointer~0.base v_ArrVal_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (or (= (mod (select (select .cse5 c_~var_1_6_Pointer~0.base) c_~var_1_6_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_361 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_361))) (or (not (= (mod (select (select .cse6 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_364 (Array Int Int)) (v_ArrVal_365 (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_365) c_~var_1_15_Pointer~0.base v_ArrVal_364))) (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_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) 0))))))))) is different from false [2023-11-19 08:01:13,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450557263] [2023-11-19 08:01:13,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:13,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781614239] [2023-11-19 08:01:13,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781614239] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:13,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:13,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-19 08:01:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938621872] [2023-11-19 08:01:13,303 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:13,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 08:01:13,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:13,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:01:13,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=371, Unknown=20, NotChecked=126, Total=600 [2023-11-19 08:01:13,308 INFO L87 Difference]: Start difference. First operand 140 states and 192 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-19 08:01:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:15,090 INFO L93 Difference]: Finished difference Result 362 states and 503 transitions. [2023-11-19 08:01:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:01:15,090 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), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 109 [2023-11-19 08:01:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:15,093 INFO L225 Difference]: With dead ends: 362 [2023-11-19 08:01:15,093 INFO L226 Difference]: Without dead ends: 236 [2023-11-19 08:01:15,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=215, Invalid=704, Unknown=23, NotChecked=180, Total=1122 [2023-11-19 08:01:15,095 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 674 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:15,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 923 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:01:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-19 08:01:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 149. [2023-11-19 08:01:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 128 states have (on average 1.3515625) internal successors, (173), 129 states have internal predecessors, (173), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:01:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 205 transitions. [2023-11-19 08:01:15,117 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 205 transitions. Word has length 109 [2023-11-19 08:01:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:15,118 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 205 transitions. [2023-11-19 08:01:15,118 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), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-19 08:01:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 205 transitions. [2023-11-19 08:01:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 08:01:15,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:15,120 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] [2023-11-19 08:01:15,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-19 08:01:15,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:15,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:15,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash -461030279, now seen corresponding path program 1 times [2023-11-19 08:01:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:15,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175108149] [2023-11-19 08:01:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:15,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:15,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033730823] [2023-11-19 08:01:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:15,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:15,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:15,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:15,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:01:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:15,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 08:01:15,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:15,599 INFO L378 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 7 treesize of output 3 [2023-11-19 08:01:16,324 INFO L378 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 [2023-11-19 08:01:16,629 INFO L378 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 [2023-11-19 08:01:16,862 INFO L378 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 [2023-11-19 08:01:17,058 INFO L378 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 [2023-11-19 08:01:17,227 INFO L378 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 [2023-11-19 08:01:17,428 INFO L378 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 [2023-11-19 08:01:17,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:17,526 INFO L378 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 [2023-11-19 08:01:17,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:17,555 INFO L378 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 [2023-11-19 08:01:17,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:17,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:17,566 INFO L378 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 [2023-11-19 08:01:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 08:01:17,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:17,635 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_414 (Array Int Int)) (v_ArrVal_413 (Array Int Int))) (not (= (mod (select (select (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_414) c_~var_1_15_Pointer~0.base v_ArrVal_413) c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) 256) 0))) is different from false [2023-11-19 08:01:17,642 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_414 (Array Int Int)) (v_ArrVal_413 (Array Int Int)) (v_ArrVal_412 (Array Int Int))) (not (= (mod (select (select (store (store (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_412) c_~var_1_13_Pointer~0.base v_ArrVal_414) c_~var_1_15_Pointer~0.base v_ArrVal_413) c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) 256) 0))) is different from false [2023-11-19 08:01:17,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:17,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175108149] [2023-11-19 08:01:17,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:17,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033730823] [2023-11-19 08:01:17,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033730823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:17,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:17,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 08:01:17,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313739463] [2023-11-19 08:01:17,844 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:17,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 08:01:17,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 08:01:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=209, Unknown=19, NotChecked=66, Total=380 [2023-11-19 08:01:17,846 INFO L87 Difference]: Start difference. First operand 149 states and 205 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2023-11-19 08:01:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:18,496 INFO L93 Difference]: Finished difference Result 339 states and 472 transitions. [2023-11-19 08:01:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:18,498 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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 109 [2023-11-19 08:01:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:18,500 INFO L225 Difference]: With dead ends: 339 [2023-11-19 08:01:18,501 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 08:01:18,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=276, Unknown=19, NotChecked=78, Total=506 [2023-11-19 08:01:18,502 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 292 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:18,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 562 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:01:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 08:01:18,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 157. [2023-11-19 08:01:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 136 states have (on average 1.3602941176470589) internal successors, (185), 137 states have internal predecessors, (185), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:01:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 217 transitions. [2023-11-19 08:01:18,522 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 217 transitions. Word has length 109 [2023-11-19 08:01:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:18,523 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 217 transitions. [2023-11-19 08:01:18,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 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) [2023-11-19 08:01:18,523 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 217 transitions. [2023-11-19 08:01:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 08:01:18,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:18,525 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] [2023-11-19 08:01:18,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:18,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:18,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:18,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash -272774337, now seen corresponding path program 1 times [2023-11-19 08:01:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:18,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794525437] [2023-11-19 08:01:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:18,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:18,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595755498] [2023-11-19 08:01:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:18,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:18,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:18,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:01:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:18,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:01:18,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-19 08:01:19,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:01:19,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794525437] [2023-11-19 08:01:19,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595755498] [2023-11-19 08:01:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595755498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:19,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:19,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:19,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236523914] [2023-11-19 08:01:19,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:19,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:19,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:19,004 INFO L87 Difference]: Start difference. First operand 157 states and 217 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) [2023-11-19 08:01:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:19,067 INFO L93 Difference]: Finished difference Result 326 states and 456 transitions. [2023-11-19 08:01:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:19,068 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 [2023-11-19 08:01:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:19,073 INFO L225 Difference]: With dead ends: 326 [2023-11-19 08:01:19,074 INFO L226 Difference]: Without dead ends: 183 [2023-11-19 08:01:19,074 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 [2023-11-19 08:01:19,075 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 [2023-11-19 08:01:19,076 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] [2023-11-19 08:01:19,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-19 08:01:19,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 160. [2023-11-19 08:01:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 139 states have (on average 1.3525179856115108) internal successors, (188), 140 states have internal predecessors, (188), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:01:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2023-11-19 08:01:19,107 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 111 [2023-11-19 08:01:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:19,108 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2023-11-19 08:01:19,108 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) [2023-11-19 08:01:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2023-11-19 08:01:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 08:01:19,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:19,110 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] [2023-11-19 08:01:19,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:19,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:19,323 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:19,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:19,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1058462104, now seen corresponding path program 1 times [2023-11-19 08:01:19,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:19,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477985897] [2023-11-19 08:01:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:19,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:19,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:19,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717081548] [2023-11-19 08:01:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:19,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:19,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:19,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:19,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:01:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:19,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-19 08:01:19,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:20,869 INFO L378 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 [2023-11-19 08:01:21,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:21,250 INFO L378 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 [2023-11-19 08:01:21,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:21,493 INFO L378 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 [2023-11-19 08:01:21,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:21,797 INFO L378 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 [2023-11-19 08:01:21,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:21,834 INFO L378 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 [2023-11-19 08:01:21,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:21,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 08:01:22,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:22,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:22,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:22,006 INFO L378 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 25 treesize of output 23 [2023-11-19 08:01:22,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:22,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:22,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:22,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:22,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:22,028 INFO L378 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 30 treesize of output 23 [2023-11-19 08:01:22,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:01:22,132 INFO L378 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 42 treesize of output 26 [2023-11-19 08:01:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-19 08:01:22,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:22,414 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (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_506 (Array Int Int)) (v_ArrVal_507 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (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) c_~var_1_1_Pointer~0.offset) 256) 1))))) is different from false [2023-11-19 08:01:22,474 WARN L854 $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_506 (Array Int Int)) (v_ArrVal_507 (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_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (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_506 (Array Int Int)) (v_ArrVal_507 (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_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (= (mod (select (select .cse2 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse2 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))))) |c_ULTIMATE.start_step_#t~short18#1|) (or (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (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_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (= (mod (select (select .cse3 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= 1 (mod (select (select .cse3 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256))))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (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_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (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 .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256)))))) (not |c_ULTIMATE.start_step_#t~short18#1|)))) is different from false [2023-11-19 08:01:22,542 WARN L854 $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)) (.cse2 (select |c_#memory_int| c_~var_1_1_Pointer~0.base))) (and (or .cse0 (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (Array Int Int))) (let ((.cse1 (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_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (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))))) (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (Array Int Int))) (let ((.cse3 (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_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (not (= (mod (select (select .cse3 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)) (= 0 (mod (select (select .cse3 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256))))))) (or (not .cse0) (and (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (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 0)) c_~var_1_13_Pointer~0.base v_ArrVal_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (= (mod (select (select .cse4 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0) (= (mod (select (select .cse4 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_506 (Array Int Int)) (v_ArrVal_507 (Array Int Int))) (let ((.cse5 (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_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (= (mod (select (select .cse5 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse5 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))))))) is different from false [2023-11-19 08:01:22,812 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_503 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_503))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (Array Int Int))) (let ((.cse0 (store (store (store .cse1 c_~var_1_1_Pointer~0.base (store (select .cse1 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (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)))) (not (= 0 (mod (select (select .cse1 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256)))))) (forall ((v_ArrVal_503 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_503))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (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_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (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)))) (not (= 0 (mod (select (select .cse3 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256)))))) (forall ((v_ArrVal_503 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_503))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (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_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (= (mod (select (select .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1) (= (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))))) (forall ((v_ArrVal_503 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| c_~var_1_14_Pointer~0.base v_ArrVal_503))) (or (= 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_506 (Array Int Int)) (v_ArrVal_507 (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 1)) c_~var_1_13_Pointer~0.base v_ArrVal_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (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 [2023-11-19 08:01:24,909 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_502) c_~var_1_14_Pointer~0.base v_ArrVal_503))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (Array Int Int))) (let ((.cse0 (store (store (store .cse1 c_~var_1_1_Pointer~0.base (store (select .cse1 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 1)) c_~var_1_13_Pointer~0.base v_ArrVal_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (= (mod (select (select .cse0 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= 0 (mod (select (select .cse0 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256)))))) (= (mod (select (select .cse1 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_502) c_~var_1_14_Pointer~0.base v_ArrVal_503))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (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 1)) c_~var_1_13_Pointer~0.base v_ArrVal_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (= 0 (mod (select (select .cse2 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256)) (= (mod (select (select .cse2 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1)))) (= (mod (select (select .cse3 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 (Array Int Int))) (let ((.cse5 (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_502) c_~var_1_14_Pointer~0.base v_ArrVal_503))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (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 0)) c_~var_1_13_Pointer~0.base v_ArrVal_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (= (mod (select (select .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 1) (= (mod (select (select .cse4 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0)))) (not (= (mod (select (select .cse5 c_~var_1_7_Pointer~0.base) c_~var_1_7_Pointer~0.offset) 256) 0))))) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_502) c_~var_1_14_Pointer~0.base v_ArrVal_503))) (or (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_506 (Array Int Int)) (v_ArrVal_507 (Array Int Int))) (let ((.cse6 (store (store (store .cse7 c_~var_1_1_Pointer~0.base (store (select .cse7 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset 0)) c_~var_1_13_Pointer~0.base v_ArrVal_507) c_~var_1_15_Pointer~0.base v_ArrVal_506))) (or (= (mod (select (select .cse6 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset) 256) 0) (not (= (mod (select (select .cse6 c_~var_1_7_Pointer~0.base) c_~var_1_7_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 [2023-11-19 08:01:25,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:25,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477985897] [2023-11-19 08:01:25,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:01:25,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717081548] [2023-11-19 08:01:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717081548] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:25,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:01:25,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-11-19 08:01:25,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789542047] [2023-11-19 08:01:25,655 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:25,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 08:01:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 08:01:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=529, Unknown=5, NotChecked=250, Total=870 [2023-11-19 08:01:25,657 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 21 states, 20 states have (on average 3.05) internal successors, (61), 18 states have internal predecessors, (61), 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) [2023-11-19 08:01:31,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:31,176 INFO L93 Difference]: Finished difference Result 455 states and 629 transitions. [2023-11-19 08:01:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 08:01:31,180 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.05) internal successors, (61), 18 states have internal predecessors, (61), 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 111 [2023-11-19 08:01:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:01:31,185 INFO L225 Difference]: With dead ends: 455 [2023-11-19 08:01:31,186 INFO L226 Difference]: Without dead ends: 309 [2023-11-19 08:01:31,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=290, Invalid=1285, Unknown=5, NotChecked=400, Total=1980 [2023-11-19 08:01:31,188 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1306 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:01:31,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 938 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-19 08:01:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-19 08:01:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 162. [2023-11-19 08:01:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 141 states have (on average 1.3546099290780143) internal successors, (191), 142 states have internal predecessors, (191), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 08:01:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 223 transitions. [2023-11-19 08:01:31,213 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 223 transitions. Word has length 111 [2023-11-19 08:01:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:01:31,214 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 223 transitions. [2023-11-19 08:01:31,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.05) internal successors, (61), 18 states have internal predecessors, (61), 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) [2023-11-19 08:01:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 223 transitions. [2023-11-19 08:01:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 08:01:31,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:01:31,217 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] [2023-11-19 08:01:31,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:31,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:01:31,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:01:31,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash -736571585, now seen corresponding path program 1 times [2023-11-19 08:01:31,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:31,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336728709] [2023-11-19 08:01:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:31,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:31,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:01:31,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95183548] [2023-11-19 08:01:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:31,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:31,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:31,462 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:31,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_994c1f17-832d-4f03-be17-b20950eddad5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:01:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:31,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:01:31,735 INFO L285 TraceCheckSpWp]: Computing forward predicates...