./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/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_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/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_b22127d5-f97d-43e1-8452-658d73225251/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 5e838264e6ed88ede0832d807d635f75755550116c48539e38a7650cef86d5a2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:06,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:06,259 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:05:06,264 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:06,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:06,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:06,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:06,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:06,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:06,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:06,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:06,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:06,297 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:06,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:06,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:06,299 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:06,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:06,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:06,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:06,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:06,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:06,304 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:06,304 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:06,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:06,306 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:06,306 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:06,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:06,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:06,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:06,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:06,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:06,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:06,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:06,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:06,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:06,312 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:06,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:06,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:06,313 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:06,314 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_b22127d5-f97d-43e1-8452-658d73225251/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e838264e6ed88ede0832d807d635f75755550116c48539e38a7650cef86d5a2 [2023-11-19 08:05:06,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:06,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:06,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:06,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:06,659 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:06,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i [2023-11-19 08:05:09,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:10,240 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:10,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i [2023-11-19 08:05:10,252 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/data/1162459bf/e27ad3fb4e6d4b54ae5da0db860401e5/FLAG1a2f385b4 [2023-11-19 08:05:10,278 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/data/1162459bf/e27ad3fb4e6d4b54ae5da0db860401e5 [2023-11-19 08:05:10,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:10,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:10,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:10,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:10,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:10,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30aa470d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10, skipping insertion in model container [2023-11-19 08:05:10,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,350 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:10,503 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_b22127d5-f97d-43e1-8452-658d73225251/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i[916,929] [2023-11-19 08:05:10,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:10,578 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:10,593 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_b22127d5-f97d-43e1-8452-658d73225251/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i[916,929] [2023-11-19 08:05:10,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:10,652 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:10,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10 WrapperNode [2023-11-19 08:05:10,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:10,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:10,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:10,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:10,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,730 INFO L138 Inliner]: procedures = 26, calls = 164, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 433 [2023-11-19 08:05:10,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:10,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:10,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:10,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:10,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:10,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:10,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:10,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:10,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (1/1) ... [2023-11-19 08:05:10,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:10,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:10,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:10,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:05:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:05:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:05:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:11,128 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:11,133 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:11,826 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:11,836 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:11,836 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:05:11,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:11 BoogieIcfgContainer [2023-11-19 08:05:11,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:11,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:11,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:11,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:11,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:10" (1/3) ... [2023-11-19 08:05:11,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5c3c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:11, skipping insertion in model container [2023-11-19 08:05:11,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:10" (2/3) ... [2023-11-19 08:05:11,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5c3c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:11, skipping insertion in model container [2023-11-19 08:05:11,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:11" (3/3) ... [2023-11-19 08:05:11,851 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-19.i [2023-11-19 08:05:11,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:11,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:05:11,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:11,945 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;@d7e490d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:11,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:05:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 80 states have (on average 1.4) internal successors, (112), 81 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 08:05:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 08:05:11,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:11,998 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:11,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:12,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:12,009 INFO L85 PathProgramCache]: Analyzing trace with hash 504218985, now seen corresponding path program 1 times [2023-11-19 08:05:12,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:12,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630990048] [2023-11-19 08:05:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:12,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:12,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:12,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936250074] [2023-11-19 08:05:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:12,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:12,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:12,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:12,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:05:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:12,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:05:12,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 08:05:12,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:12,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630990048] [2023-11-19 08:05:12,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936250074] [2023-11-19 08:05:12,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936250074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:12,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:12,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885288372] [2023-11-19 08:05:12,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:12,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:12,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:12,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:12,880 INFO L87 Difference]: Start difference. First operand has 100 states, 80 states have (on average 1.4) internal successors, (112), 81 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 08:05:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:12,962 INFO L93 Difference]: Finished difference Result 197 states and 308 transitions. [2023-11-19 08:05:12,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:12,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-11-19 08:05:12,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:12,976 INFO L225 Difference]: With dead ends: 197 [2023-11-19 08:05:12,976 INFO L226 Difference]: Without dead ends: 100 [2023-11-19 08:05:12,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 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 08:05:12,985 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 3 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:12,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 394 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-19 08:05:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2023-11-19 08:05:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 08:05:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2023-11-19 08:05:13,070 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 132 [2023-11-19 08:05:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:13,075 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2023-11-19 08:05:13,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 08:05:13,076 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2023-11-19 08:05:13,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 08:05:13,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:13,086 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:13,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:13,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:05:13,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:13,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 506066027, now seen corresponding path program 1 times [2023-11-19 08:05:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:13,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852819681] [2023-11-19 08:05:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:13,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:13,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034533282] [2023-11-19 08:05:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:13,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:13,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:13,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:13,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:05:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:13,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-19 08:05:13,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:15,563 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 08:05:15,964 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 08:05:16,259 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 08:05:16,500 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 08:05:16,736 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 08:05:17,001 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 08:05:17,036 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 08:05:17,072 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 08:05:17,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:17,141 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 65 treesize of output 41 [2023-11-19 08:05:17,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:17,425 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 147 treesize of output 83 [2023-11-19 08:05:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 3 proven. 468 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-19 08:05:17,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 08:05:17,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852819681] [2023-11-19 08:05:17,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034533282] [2023-11-19 08:05:17,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034533282] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:17,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:05:17,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2023-11-19 08:05:17,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040731782] [2023-11-19 08:05:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:17,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:17,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:17,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-11-19 08:05:17,927 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 08:05:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:18,513 INFO L93 Difference]: Finished difference Result 275 states and 387 transitions. [2023-11-19 08:05:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:05:18,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-11-19 08:05:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:18,520 INFO L225 Difference]: With dead ends: 275 [2023-11-19 08:05:18,520 INFO L226 Difference]: Without dead ends: 180 [2023-11-19 08:05:18,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2023-11-19 08:05:18,524 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 182 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:18,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 627 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:05:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-19 08:05:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 106. [2023-11-19 08:05:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 87 states have (on average 1.3333333333333333) internal successors, (116), 87 states have internal predecessors, (116), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 08:05:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2023-11-19 08:05:18,560 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 132 [2023-11-19 08:05:18,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:18,561 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2023-11-19 08:05:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 08:05:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2023-11-19 08:05:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 08:05:18,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:18,565 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:18,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 08:05:18,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:18,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1082281875, now seen corresponding path program 1 times [2023-11-19 08:05:18,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:18,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852728370] [2023-11-19 08:05:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:18,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:18,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:18,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868129818] [2023-11-19 08:05:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:18,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:18,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:18,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:18,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:05:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:19,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:05:19,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:19,172 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 17 treesize of output 9 [2023-11-19 08:05:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-19 08:05:19,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:19,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852728370] [2023-11-19 08:05:19,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868129818] [2023-11-19 08:05:19,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868129818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:19,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:19,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:19,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985389865] [2023-11-19 08:05:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:19,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:19,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:19,190 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 08:05:19,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:19,505 INFO L93 Difference]: Finished difference Result 291 states and 407 transitions. [2023-11-19 08:05:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:19,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-11-19 08:05:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:19,510 INFO L225 Difference]: With dead ends: 291 [2023-11-19 08:05:19,510 INFO L226 Difference]: Without dead ends: 188 [2023-11-19 08:05:19,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:19,513 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 85 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:19,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 553 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:05:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-19 08:05:19,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 111. [2023-11-19 08:05:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 92 states have internal predecessors, (123), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 08:05:19,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 157 transitions. [2023-11-19 08:05:19,526 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 157 transitions. Word has length 132 [2023-11-19 08:05:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:19,527 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 157 transitions. [2023-11-19 08:05:19,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 08:05:19,528 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 157 transitions. [2023-11-19 08:05:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 08:05:19,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:19,531 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:19,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:19,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 08:05:19,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:19,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash -253394688, now seen corresponding path program 1 times [2023-11-19 08:05:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:19,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473325465] [2023-11-19 08:05:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:19,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:19,834 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:19,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900828440] [2023-11-19 08:05:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:19,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:19,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:19,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:19,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:05:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:20,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 08:05:20,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:21,861 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 08:05:22,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:22,244 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 16 treesize of output 11 [2023-11-19 08:05:22,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:22,493 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 16 treesize of output 11 [2023-11-19 08:05:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:22,843 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 16 treesize of output 11 [2023-11-19 08:05:22,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:22,908 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 16 treesize of output 11 [2023-11-19 08:05:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:22,965 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 16 treesize of output 11 [2023-11-19 08:05:23,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:23,022 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 16 treesize of output 11 [2023-11-19 08:05:23,067 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 15 treesize of output 7 [2023-11-19 08:05:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 1 proven. 347 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-11-19 08:05:23,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:23,148 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_205) c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) 1))) is different from false [2023-11-19 08:05:23,248 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int)) (v_ArrVal_204 (Array Int Int)) (v_ArrVal_203 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_203) c_~var_1_11_Pointer~0.base v_ArrVal_204) c_~var_1_1_Pointer~0.base v_ArrVal_205) c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) 1))) is different from false [2023-11-19 08:05:23,265 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int)) (v_ArrVal_204 (Array Int Int)) (v_ArrVal_203 (Array Int Int)) (v_ArrVal_202 (Array Int Int))) (< 0 (+ 1 (select (select (store (store (store (store |c_#memory_int| c_~var_1_10_Pointer~0.base v_ArrVal_202) c_~var_1_13_Pointer~0.base v_ArrVal_203) c_~var_1_11_Pointer~0.base v_ArrVal_204) c_~var_1_1_Pointer~0.base v_ArrVal_205) c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset)))) is different from false [2023-11-19 08:05:23,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:23,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473325465] [2023-11-19 08:05:23,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900828440] [2023-11-19 08:05:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900828440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:23,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:05:23,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-19 08:05:23,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168826035] [2023-11-19 08:05:23,306 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:23,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 08:05:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:23,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 08:05:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=202, Unknown=7, NotChecked=96, Total=380 [2023-11-19 08:05:23,313 INFO L87 Difference]: Start difference. First operand 111 states and 157 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-19 08:05:24,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:24,387 INFO L93 Difference]: Finished difference Result 248 states and 347 transitions. [2023-11-19 08:05:24,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:05:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 133 [2023-11-19 08:05:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:24,391 INFO L225 Difference]: With dead ends: 248 [2023-11-19 08:05:24,391 INFO L226 Difference]: Without dead ends: 140 [2023-11-19 08:05:24,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=512, Unknown=7, NotChecked=156, Total=870 [2023-11-19 08:05:24,394 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 396 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:24,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 288 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:05:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-19 08:05:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 115. [2023-11-19 08:05:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 95 states have internal predecessors, (125), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 08:05:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 159 transitions. [2023-11-19 08:05:24,426 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 159 transitions. Word has length 133 [2023-11-19 08:05:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:24,427 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 159 transitions. [2023-11-19 08:05:24,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-19 08:05:24,428 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 159 transitions. [2023-11-19 08:05:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 08:05:24,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:24,431 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:24,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:24,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:24,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:24,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:24,655 INFO L85 PathProgramCache]: Analyzing trace with hash -840200702, now seen corresponding path program 1 times [2023-11-19 08:05:24,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:24,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779976287] [2023-11-19 08:05:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:24,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:24,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:24,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651721224] [2023-11-19 08:05:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:24,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:24,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:24,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:24,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:05:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:24,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-19 08:05:24,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:25,760 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 08:05:26,237 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 08:05:26,638 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 08:05:27,022 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 08:05:27,337 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 08:05:27,602 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 08:05:27,833 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 08:05:28,184 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 08:05:28,233 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 08:05:28,278 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 08:05:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:28,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:28,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:28,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:28,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:28,493 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 31 treesize of output 32 [2023-11-19 08:05:28,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:28,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:28,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2023-11-19 08:05:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 504 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 08:05:28,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:29,763 WARN L854 $PredicateComparison]: unable to prove that (forall ((~var_1_2_Pointer~0.offset Int) (~var_1_11_Pointer~0.offset Int) (v_ArrVal_264 Int) (v_ArrVal_263 (Array Int Int)) (v_ArrVal_262 (Array Int Int)) (v_ArrVal_266 (Array Int Int))) (let ((.cse1 (let ((.cse2 (store (store |c_#memory_int| c_~var_1_10_Pointer~0.base v_ArrVal_262) c_~var_1_13_Pointer~0.base v_ArrVal_263))) (store .cse2 c_~var_1_11_Pointer~0.base (store (select .cse2 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset v_ArrVal_264))))) (or (let ((.cse0 (store .cse1 c_~var_1_1_Pointer~0.base v_ArrVal_266))) (< (+ (mod (select (select .cse0 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256) (select (select .cse0 c_~var_1_11_Pointer~0.base) ~var_1_11_Pointer~0.offset)) (mod (select (select .cse0 c_~var_1_2_Pointer~0.base) ~var_1_2_Pointer~0.offset) 256))) (< (mod (select (select .cse1 c_~var_1_2_Pointer~0.base) ~var_1_2_Pointer~0.offset) 256) (+ v_ArrVal_264 (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 08:05:29,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779976287] [2023-11-19 08:05:29,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651721224] [2023-11-19 08:05:29,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651721224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:29,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:05:29,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-19 08:05:29,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40675396] [2023-11-19 08:05:29,859 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:29,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 08:05:29,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:29,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 08:05:29,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=624, Unknown=35, NotChecked=54, Total=870 [2023-11-19 08:05:29,862 INFO L87 Difference]: Start difference. First operand 115 states and 159 transitions. Second operand has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-19 08:05:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:31,469 INFO L93 Difference]: Finished difference Result 268 states and 370 transitions. [2023-11-19 08:05:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:05:31,470 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 133 [2023-11-19 08:05:31,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:31,472 INFO L225 Difference]: With dead ends: 268 [2023-11-19 08:05:31,472 INFO L226 Difference]: Without dead ends: 156 [2023-11-19 08:05:31,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=296, Invalid=863, Unknown=35, NotChecked=66, Total=1260 [2023-11-19 08:05:31,474 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 540 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 26 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:31,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 394 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 600 Invalid, 23 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:05:31,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-19 08:05:31,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 125. [2023-11-19 08:05:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 105 states have internal predecessors, (139), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 08:05:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 173 transitions. [2023-11-19 08:05:31,495 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 173 transitions. Word has length 133 [2023-11-19 08:05:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:31,496 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 173 transitions. [2023-11-19 08:05:31,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-19 08:05:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 173 transitions. [2023-11-19 08:05:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 08:05:31,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:31,499 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:31,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 08:05:31,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:31,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:31,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1657849152, now seen corresponding path program 1 times [2023-11-19 08:05:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:31,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583369818] [2023-11-19 08:05:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:31,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:31,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:31,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845271085] [2023-11-19 08:05:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:31,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:31,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:31,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:31,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:05:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-19 08:05:32,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:32,748 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 08:05:34,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-11-19 08:05:34,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:34,899 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 08:05:35,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:35,606 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 08:05:36,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:36,197 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 08:05:36,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:36,739 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 08:05:37,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:37,275 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 08:05:37,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:37,694 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 08:05:38,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,323 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 08:05:38,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,409 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 08:05:38,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,484 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 18 treesize of output 13 [2023-11-19 08:05:38,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,813 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 08:05:38,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 52 [2023-11-19 08:05:38,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:38,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:05:38,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 46 [2023-11-19 08:05:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 1 proven. 507 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 08:05:39,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:39,163 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_326 (Array Int Int))) (not (let ((.cse0 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_326))) (= (mod (select (select .cse0 c_~var_1_2_Pointer~0.base) c_~var_1_2_Pointer~0.offset) 256) (mod (select (select .cse0 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256))))) (forall ((v_ArrVal_326 (Array Int Int))) (not (= (mod (let ((.cse1 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_326))) (+ (select (select .cse1 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (select (select .cse1 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset))) 4294967296) 0)))) is different from false [2023-11-19 08:05:39,358 WARN L854 $PredicateComparison]: unable to prove that (or (let ((.cse1 (select |c_#memory_int| c_~var_1_4_Pointer~0.base)) (.cse2 (select |c_#memory_int| c_~var_1_5_Pointer~0.base))) (and (or (forall ((v_ArrVal_326 (Array Int Int))) (not (let ((.cse0 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_326))) (= (mod (select (select .cse0 c_~var_1_2_Pointer~0.base) c_~var_1_2_Pointer~0.offset) 256) (mod (select (select .cse0 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256))))) (forall ((~var_1_5_Pointer~0.offset Int) (~var_1_4_Pointer~0.offset Int)) (= (mod (+ (select .cse1 ~var_1_4_Pointer~0.offset) (select .cse2 ~var_1_5_Pointer~0.offset)) 4294967296) 0))) (forall ((~var_1_5_Pointer~0.offset Int) (~var_1_4_Pointer~0.offset Int)) (or (= (mod (+ (select .cse1 ~var_1_4_Pointer~0.offset) (select .cse2 ~var_1_5_Pointer~0.offset)) 4294967296) 0) (forall ((v_ArrVal_326 (Array Int Int))) (not (= (mod (let ((.cse3 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_326))) (+ (select (select .cse3 c_~var_1_4_Pointer~0.base) ~var_1_4_Pointer~0.offset) (select (select .cse3 c_~var_1_5_Pointer~0.base) ~var_1_5_Pointer~0.offset))) 4294967296) 0))))))) (= (mod (select (select |c_#memory_int| c_~var_1_2_Pointer~0.base) c_~var_1_2_Pointer~0.offset) 256) (mod (select (select |c_#memory_int| c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256))) is different from false [2023-11-19 08:05:43,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:43,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583369818] [2023-11-19 08:05:43,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:43,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845271085] [2023-11-19 08:05:43,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845271085] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:43,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:05:43,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-11-19 08:05:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070337590] [2023-11-19 08:05:43,204 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:43,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-19 08:05:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-19 08:05:43,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=560, Unknown=25, NotChecked=106, Total=870 [2023-11-19 08:05:43,207 INFO L87 Difference]: Start difference. First operand 125 states and 173 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-19 08:05:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:46,954 INFO L93 Difference]: Finished difference Result 428 states and 587 transitions. [2023-11-19 08:05:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:05:46,955 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 133 [2023-11-19 08:05:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:46,958 INFO L225 Difference]: With dead ends: 428 [2023-11-19 08:05:46,958 INFO L226 Difference]: Without dead ends: 306 [2023-11-19 08:05:46,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=392, Invalid=1148, Unknown=28, NotChecked=154, Total=1722 [2023-11-19 08:05:46,967 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 455 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:46,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 547 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 08:05:46,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-19 08:05:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 201. [2023-11-19 08:05:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 160 states have (on average 1.28125) internal successors, (205), 160 states have internal predecessors, (205), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-19 08:05:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 273 transitions. [2023-11-19 08:05:47,012 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 273 transitions. Word has length 133 [2023-11-19 08:05:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:47,013 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 273 transitions. [2023-11-19 08:05:47,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-19 08:05:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 273 transitions. [2023-11-19 08:05:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 08:05:47,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:47,016 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:05:47,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:47,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:47,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:47,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1616049790, now seen corresponding path program 1 times [2023-11-19 08:05:47,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:47,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923556775] [2023-11-19 08:05:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:47,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:47,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:47,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049614717] [2023-11-19 08:05:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:47,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:47,282 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:47,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22127d5-f97d-43e1-8452-658d73225251/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:05:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:50,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 151 conjunts are in the unsatisfiable core [2023-11-19 08:05:50,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:51,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:51,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:51,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:51,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:51,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:51,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:51,431 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-19 08:05:51,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 56 [2023-11-19 08:05:55,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:55,116 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-19 08:05:55,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 61 [2023-11-19 08:05:58,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:05:58,734 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-19 08:05:58,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 70