./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-4.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_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/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_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/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_15e43fa9-99ba-4918-a6e1-bcd5c6890350/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 ebe3d6e9d03e6e5cf83180cae6564bdb73d3d5ae307bc763d1d081898bce00b0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:38,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:38,496 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:36:38,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:38,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:38,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:38,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:38,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:38,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:38,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:38,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:38,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:38,532 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:38,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:38,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:38,534 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:38,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:38,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:38,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:38,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:38,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:38,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:38,539 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:38,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:38,540 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:38,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:38,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:38,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:38,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:38,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:38,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:38,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:38,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:38,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:38,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:38,546 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:38,547 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:38,547 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:38,548 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:38,548 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_15e43fa9-99ba-4918-a6e1-bcd5c6890350/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebe3d6e9d03e6e5cf83180cae6564bdb73d3d5ae307bc763d1d081898bce00b0 [2023-11-19 07:36:38,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:38,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:38,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:38,868 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:38,869 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:38,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-4.i [2023-11-19 07:36:42,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:42,293 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:42,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-4.i [2023-11-19 07:36:42,312 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/data/04f25e0f2/7c8a56d137e945a19e3e8f0892a83801/FLAG33cb0ac30 [2023-11-19 07:36:42,330 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/data/04f25e0f2/7c8a56d137e945a19e3e8f0892a83801 [2023-11-19 07:36:42,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:42,336 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:42,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:42,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:42,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:42,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ffd562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42, skipping insertion in model container [2023-11-19 07:36:42,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:42,537 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_15e43fa9-99ba-4918-a6e1-bcd5c6890350/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-4.i[916,929] [2023-11-19 07:36:42,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:42,639 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:42,652 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_15e43fa9-99ba-4918-a6e1-bcd5c6890350/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-4.i[916,929] [2023-11-19 07:36:42,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:42,721 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:42,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42 WrapperNode [2023-11-19 07:36:42,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:42,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:42,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:42,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:42,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,852 INFO L138 Inliner]: procedures = 29, calls = 161, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 457 [2023-11-19 07:36:42,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:42,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:42,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:42,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:42,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:42,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:42,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:42,969 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:42,970 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (1/1) ... [2023-11-19 07:36:42,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:42,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:43,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:43,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:36:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:36:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:36:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 07:36:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:36:43,074 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:36:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:43,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:43,259 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:43,262 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:43,928 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:43,938 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:43,938 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:36:43,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:43 BoogieIcfgContainer [2023-11-19 07:36:43,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:43,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:43,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:43,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:43,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:42" (1/3) ... [2023-11-19 07:36:43,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e66b1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:43, skipping insertion in model container [2023-11-19 07:36:43,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:42" (2/3) ... [2023-11-19 07:36:43,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e66b1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:43, skipping insertion in model container [2023-11-19 07:36:43,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:43" (3/3) ... [2023-11-19 07:36:43,954 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-4.i [2023-11-19 07:36:43,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:43,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:36:44,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:44,043 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;@f9761c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:44,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:36:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 92 states have (on average 1.423913043478261) internal successors, (131), 93 states have internal predecessors, (131), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:36:44,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 07:36:44,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:44,072 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:44,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:44,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:44,078 INFO L85 PathProgramCache]: Analyzing trace with hash -250036056, now seen corresponding path program 1 times [2023-11-19 07:36:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041188776] [2023-11-19 07:36:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:44,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:44,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:44,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466899484] [2023-11-19 07:36:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:44,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:44,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:44,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:44,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:44,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:44,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:36:44,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:44,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:44,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041188776] [2023-11-19 07:36:44,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:44,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466899484] [2023-11-19 07:36:44,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466899484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:44,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:44,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:44,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375429723] [2023-11-19 07:36:44,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:44,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:44,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:44,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:44,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:44,956 INFO L87 Difference]: Start difference. First operand has 110 states, 92 states have (on average 1.423913043478261) internal successors, (131), 93 states have internal predecessors, (131), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:36:45,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:45,043 INFO L93 Difference]: Finished difference Result 217 states and 336 transitions. [2023-11-19 07:36:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:45,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 130 [2023-11-19 07:36:45,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:45,060 INFO L225 Difference]: With dead ends: 217 [2023-11-19 07:36:45,060 INFO L226 Difference]: Without dead ends: 110 [2023-11-19 07:36:45,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 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 07:36:45,071 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 3 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 445 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 07:36:45,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 445 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-19 07:36:45,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-11-19 07:36:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 91 states have (on average 1.3846153846153846) internal successors, (126), 91 states have internal predecessors, (126), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:36:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 156 transitions. [2023-11-19 07:36:45,129 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 156 transitions. Word has length 130 [2023-11-19 07:36:45,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:45,131 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 156 transitions. [2023-11-19 07:36:45,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:36:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 156 transitions. [2023-11-19 07:36:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 07:36:45,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:45,137 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:45,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:45,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:45,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:45,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:45,360 INFO L85 PathProgramCache]: Analyzing trace with hash -248189014, now seen corresponding path program 1 times [2023-11-19 07:36:45,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:45,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193642751] [2023-11-19 07:36:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:45,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:45,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:45,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225195442] [2023-11-19 07:36:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:45,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:45,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:45,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:36:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:45,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-19 07:36:45,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:48,810 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 07:36:49,150 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 07:36:49,448 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 07:36:49,495 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 07:36:49,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:36:49,545 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:36:49,546 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 1 case distinctions, treesize of input 41 treesize of output 24 [2023-11-19 07:36:49,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:36:49,641 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:36:49,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 30 [2023-11-19 07:36:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-11-19 07:36:49,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:36:49,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:49,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193642751] [2023-11-19 07:36:49,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:49,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225195442] [2023-11-19 07:36:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225195442] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:49,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:49,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-11-19 07:36:49,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425679893] [2023-11-19 07:36:49,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:49,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:49,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:36:49,785 INFO L87 Difference]: Start difference. First operand 108 states and 156 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:36:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:50,088 INFO L93 Difference]: Finished difference Result 268 states and 386 transitions. [2023-11-19 07:36:50,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:50,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 130 [2023-11-19 07:36:50,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:50,092 INFO L225 Difference]: With dead ends: 268 [2023-11-19 07:36:50,093 INFO L226 Difference]: Without dead ends: 163 [2023-11-19 07:36:50,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:36:50,096 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 108 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:50,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 496 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:36:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-19 07:36:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2023-11-19 07:36:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 101 states have (on average 1.386138613861386) internal successors, (140), 101 states have internal predecessors, (140), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:36:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 170 transitions. [2023-11-19 07:36:50,113 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 170 transitions. Word has length 130 [2023-11-19 07:36:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:50,115 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 170 transitions. [2023-11-19 07:36:50,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:36:50,115 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 170 transitions. [2023-11-19 07:36:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 07:36:50,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:50,119 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:50,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:50,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:36:50,341 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:50,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:50,342 INFO L85 PathProgramCache]: Analyzing trace with hash 452875564, now seen corresponding path program 1 times [2023-11-19 07:36:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:50,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625858481] [2023-11-19 07:36:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:50,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:50,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124624294] [2023-11-19 07:36:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:50,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:50,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:50,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:36:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:50,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:36:50,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:50,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:50,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625858481] [2023-11-19 07:36:50,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:50,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124624294] [2023-11-19 07:36:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124624294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:50,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:50,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163730075] [2023-11-19 07:36:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:50,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:50,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:50,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:50,681 INFO L87 Difference]: Start difference. First operand 118 states and 170 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:36:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:50,714 INFO L93 Difference]: Finished difference Result 259 states and 374 transitions. [2023-11-19 07:36:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:50,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 130 [2023-11-19 07:36:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:50,717 INFO L225 Difference]: With dead ends: 259 [2023-11-19 07:36:50,717 INFO L226 Difference]: Without dead ends: 144 [2023-11-19 07:36:50,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 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 07:36:50,720 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 28 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:50,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 478 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-19 07:36:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 122. [2023-11-19 07:36:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 105 states have internal predecessors, (144), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:36:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 174 transitions. [2023-11-19 07:36:50,738 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 174 transitions. Word has length 130 [2023-11-19 07:36:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:50,741 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 174 transitions. [2023-11-19 07:36:50,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:36:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 174 transitions. [2023-11-19 07:36:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:36:50,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:50,748 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:50,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:36:50,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:36:50,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:50,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:50,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1142808386, now seen corresponding path program 1 times [2023-11-19 07:36:50,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:50,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008058312] [2023-11-19 07:36:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:51,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:51,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045658432] [2023-11-19 07:36:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:51,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:51,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:51,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:36:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:36:51,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:36:51,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:51,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:51,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008058312] [2023-11-19 07:36:51,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045658432] [2023-11-19 07:36:51,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045658432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:51,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:51,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:51,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112619157] [2023-11-19 07:36:51,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:51,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:51,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:51,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:51,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:51,265 INFO L87 Difference]: Start difference. First operand 122 states and 174 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:36:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:51,323 INFO L93 Difference]: Finished difference Result 291 states and 415 transitions. [2023-11-19 07:36:51,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:51,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 132 [2023-11-19 07:36:51,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:51,326 INFO L225 Difference]: With dead ends: 291 [2023-11-19 07:36:51,326 INFO L226 Difference]: Without dead ends: 172 [2023-11-19 07:36:51,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:36:51,332 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 57 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:51,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 643 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-19 07:36:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 124. [2023-11-19 07:36:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 107 states have internal predecessors, (146), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:36:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 176 transitions. [2023-11-19 07:36:51,347 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 176 transitions. Word has length 132 [2023-11-19 07:36:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:51,348 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 176 transitions. [2023-11-19 07:36:51,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:36:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 176 transitions. [2023-11-19 07:36:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:36:51,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:51,350 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:51,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:51,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:51,567 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:51,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:51,567 INFO L85 PathProgramCache]: Analyzing trace with hash -578992069, now seen corresponding path program 1 times [2023-11-19 07:36:51,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:51,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066083378] [2023-11-19 07:36:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:51,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:51,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327226583] [2023-11-19 07:36:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:51,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:51,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:51,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:36:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:52,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-19 07:36:52,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:54,209 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 07:36:54,785 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 07:36:55,164 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 07:36:55,484 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 07:36:55,858 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 07:36:55,932 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 07:36:55,996 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 8 [2023-11-19 07:36:56,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-19 07:36:56,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2023-11-19 07:36:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-19 07:36:56,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:56,815 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_505 (Array Int Int)) (v_z_1 Int) (v_y_1 Int) (v_ArrVal_506 Int)) (let ((.cse2 (let ((.cse3 (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base v_ArrVal_505))) (store .cse3 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base (store (select .cse3 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.offset (+ (* 65536 v_y_1) v_z_1)))))) (or (< v_z_1 0) (let ((.cse1 (store .cse2 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base (store (select .cse2 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.offset v_ArrVal_506)))) (let ((.cse0 (mod (select (select .cse1 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.offset) 65536))) (< .cse0 (+ (div .cse0 (select (select .cse1 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset)) 1)))) (< (div v_z_1 (select (select .cse2 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset)) v_z_1) (< 65535 v_z_1)))) is different from false [2023-11-19 07:36:57,378 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_501 (Array Int Int)) (v_ArrVal_505 (Array Int Int)) (v_z_1 Int) (v_y_1 Int) (v_ArrVal_506 Int)) (let ((.cse0 (let ((.cse3 (store (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_501) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_502) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base v_ArrVal_505))) (store .cse3 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base (store (select .cse3 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.offset (+ (* 65536 v_y_1) v_z_1)))))) (or (< v_z_1 0) (< 65535 v_z_1) (< (div v_z_1 (select (select .cse0 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset)) v_z_1) (let ((.cse2 (store .cse0 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base (store (select .cse0 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var1_Pointer~0.offset v_ArrVal_506)))) (let ((.cse1 (mod (select (select .cse2 c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.offset) 65536))) (< .cse1 (+ (div .cse1 (select (select .cse2 c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset)) 1))))))) is different from false [2023-11-19 07:36:57,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066083378] [2023-11-19 07:36:57,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327226583] [2023-11-19 07:36:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327226583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:57,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:57,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:36:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837491136] [2023-11-19 07:36:57,667 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:36:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:36:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=207, Unknown=6, NotChecked=62, Total=342 [2023-11-19 07:36:57,669 INFO L87 Difference]: Start difference. First operand 124 states and 176 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-19 07:36:58,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:58,647 INFO L93 Difference]: Finished difference Result 285 states and 402 transitions. [2023-11-19 07:36:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:58,648 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 133 [2023-11-19 07:36:58,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:58,651 INFO L225 Difference]: With dead ends: 285 [2023-11-19 07:36:58,651 INFO L226 Difference]: Without dead ends: 164 [2023-11-19 07:36:58,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=109, Invalid=273, Unknown=6, NotChecked=74, Total=462 [2023-11-19 07:36:58,653 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 245 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:58,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 377 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 330 Invalid, 1 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:36:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-19 07:36:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 126. [2023-11-19 07:36:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 109 states have (on average 1.348623853211009) internal successors, (147), 109 states have internal predecessors, (147), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:36:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 177 transitions. [2023-11-19 07:36:58,669 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 177 transitions. Word has length 133 [2023-11-19 07:36:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:58,669 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 177 transitions. [2023-11-19 07:36:58,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-19 07:36:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 177 transitions. [2023-11-19 07:36:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 07:36:58,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:58,672 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:36:58,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:58,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:58,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:58,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash -805289533, now seen corresponding path program 1 times [2023-11-19 07:36:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:58,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772647429] [2023-11-19 07:36:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:58,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:58,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754429796] [2023-11-19 07:36:58,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:58,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:58,937 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:58,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:36:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:59,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 07:36:59,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:00,737 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 07:37:01,093 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 07:37:01,318 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 07:37:01,513 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 07:37:01,725 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 07:37:01,768 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 07:37:01,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:01,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:37:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-19 07:37:01,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-19 07:37:02,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:02,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772647429] [2023-11-19 07:37:02,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:02,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754429796] [2023-11-19 07:37:02,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754429796] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:02,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:02,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-11-19 07:37:02,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678599192] [2023-11-19 07:37:02,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:02,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:02,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:02,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:02,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:37:02,108 INFO L87 Difference]: Start difference. First operand 126 states and 177 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:02,496 INFO L93 Difference]: Finished difference Result 278 states and 388 transitions. [2023-11-19 07:37:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:02,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2023-11-19 07:37:02,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:02,500 INFO L225 Difference]: With dead ends: 278 [2023-11-19 07:37:02,500 INFO L226 Difference]: Without dead ends: 155 [2023-11-19 07:37:02,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:37:02,502 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 66 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:02,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 474 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:37:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-19 07:37:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 126. [2023-11-19 07:37:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 109 states have (on average 1.3394495412844036) internal successors, (146), 109 states have internal predecessors, (146), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 176 transitions. [2023-11-19 07:37:02,530 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 176 transitions. Word has length 134 [2023-11-19 07:37:02,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:02,530 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 176 transitions. [2023-11-19 07:37:02,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-19 07:37:02,531 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 176 transitions. [2023-11-19 07:37:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 07:37:02,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:02,534 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:02,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:02,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:02,751 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:02,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1105752328, now seen corresponding path program 1 times [2023-11-19 07:37:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:02,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645962383] [2023-11-19 07:37:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:02,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:02,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530472474] [2023-11-19 07:37:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:02,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:02,790 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:02,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:37:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:03,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-19 07:37:03,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:04,543 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 07:37:04,902 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 07:37:05,132 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 07:37:05,379 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 07:37:05,778 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 31 treesize of output 26 [2023-11-19 07:37:05,934 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 31 treesize of output 26 [2023-11-19 07:37:06,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:06,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:06,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2023-11-19 07:37:06,921 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 30 treesize of output 22 [2023-11-19 07:37:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-19 07:37:06,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:07,134 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_715 (Array Int Int)) (v_ArrVal_716 (Array Int Int))) (not (= (mod (div (mod c_~last_1_unsigned_long_int_Array_0_0_~0 4294967296) (mod (select (select (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base v_ArrVal_715) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_716) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset) 4294967296)) 4294967296) (mod (+ 4294967232 (mod c_~last_1_unsigned_char_Array_0_1__1_~0 256)) 4294967296)))) is different from false [2023-11-19 07:37:07,150 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_715 (Array Int Int)) (v_ArrVal_714 (Array Int Int)) (v_ArrVal_716 (Array Int Int))) (not (= (mod (+ 4294967232 (mod c_~last_1_unsigned_char_Array_0_1__1_~0 256)) 4294967296) (mod (div (mod c_~last_1_unsigned_long_int_Array_0_0_~0 4294967296) (mod (select (select (store (store (store |c_#memory_int| c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_714) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base v_ArrVal_715) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_716) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset) 4294967296)) 4294967296)))) is different from false [2023-11-19 07:37:07,193 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_713 (Array Int Int)) (v_ArrVal_715 (Array Int Int)) (v_ArrVal_714 (Array Int Int)) (v_ArrVal_716 (Array Int Int))) (not (= (mod (+ 4294967232 (mod c_~last_1_unsigned_char_Array_0_1__1_~0 256)) 4294967296) (mod (div (mod c_~last_1_unsigned_long_int_Array_0_0_~0 4294967296) (mod (select (select (store (store (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_713) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_714) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base v_ArrVal_715) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_716) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset) 4294967296)) 4294967296)))) is different from false [2023-11-19 07:37:07,639 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_ULTIMATE.start_step_~stepLocal_2~0#1| 4294967296)) (.cse3 (mod c_~last_1_unsigned_long_int_Array_0_0_~0 4294967296))) (and (forall ((v_y_4 Int) (v_ArrVal_713 (Array Int Int)) (v_ArrVal_715 (Array Int Int)) (v_ArrVal_714 (Array Int Int)) (v_ArrVal_716 (Array Int Int))) (let ((.cse0 (* v_y_4 4294967296)) (.cse1 (mod (div .cse3 (mod (select (select (store (store (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_713) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_714) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base v_ArrVal_715) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_716) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset) 4294967296)) 4294967296))) (or (< (+ 64 .cse0 .cse1) 0) (< 4294967231 .cse1) (< 191 (+ .cse0 .cse1)) (= .cse2 .cse1)))) (forall ((v_y_4 Int) (v_ArrVal_713 (Array Int Int)) (v_ArrVal_715 (Array Int Int)) (v_ArrVal_714 (Array Int Int)) (v_ArrVal_716 (Array Int Int))) (let ((.cse5 (mod (div .cse3 (mod (select (select (store (store (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_713) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_714) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base v_ArrVal_715) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_716) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset) 4294967296)) 4294967296))) (let ((.cse4 (+ (* v_y_4 4294967296) .cse5))) (or (< .cse4 4294967232) (< .cse5 4294967232) (= .cse2 .cse5) (< 4294967487 .cse4))))))) is different from false [2023-11-19 07:37:08,748 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (select (select |c_#memory_int| c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset) 4294967296))) (and (forall ((v_y_4 Int) (v_ArrVal_713 (Array Int Int)) (v_ArrVal_715 (Array Int Int)) (v_ArrVal_714 (Array Int Int)) (v_ArrVal_716 (Array Int Int)) (v_z_7 Int)) (let ((.cse2 (* v_y_4 4294967296)) (.cse1 (mod (div v_z_7 (mod (select (select (store (store (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_713) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_714) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base v_ArrVal_715) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_716) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset) 4294967296)) 4294967296))) (or (= (mod (div v_z_7 .cse0) 4294967296) .cse1) (< v_z_7 0) (< 4294967231 .cse1) (< (+ 64 .cse2 .cse1) 0) (< 191 (+ .cse2 .cse1)) (< 4294967295 v_z_7)))) (forall ((v_y_4 Int) (v_ArrVal_713 (Array Int Int)) (v_ArrVal_715 (Array Int Int)) (v_ArrVal_714 (Array Int Int)) (v_ArrVal_716 (Array Int Int)) (v_z_10 Int)) (let ((.cse4 (mod (div v_z_10 (mod (select (select (store (store (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base v_ArrVal_713) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_714) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base v_ArrVal_715) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_716) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.base) c_~signed_short_int_Array_0_arraysigned_short_int_Array_0Var0_Pointer~0.offset) 4294967296)) 4294967296))) (let ((.cse3 (+ (* v_y_4 4294967296) .cse4))) (or (< v_z_10 0) (< 4294967487 .cse3) (< 4294967295 v_z_10) (= (mod (div v_z_10 .cse0) 4294967296) .cse4) (< .cse4 4294967232) (< .cse3 4294967232))))))) is different from false [2023-11-19 07:37:09,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:09,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645962383] [2023-11-19 07:37:09,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:09,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530472474] [2023-11-19 07:37:09,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530472474] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:09,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:09,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:37:09,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174635939] [2023-11-19 07:37:09,709 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:09,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:37:09,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:37:09,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=120, Unknown=5, NotChecked=130, Total=306 [2023-11-19 07:37:09,711 INFO L87 Difference]: Start difference. First operand 126 states and 176 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-19 07:37:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:12,205 INFO L93 Difference]: Finished difference Result 323 states and 450 transitions. [2023-11-19 07:37:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:37:12,215 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 134 [2023-11-19 07:37:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:12,217 INFO L225 Difference]: With dead ends: 323 [2023-11-19 07:37:12,217 INFO L226 Difference]: Without dead ends: 200 [2023-11-19 07:37:12,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=217, Unknown=5, NotChecked=180, Total=506 [2023-11-19 07:37:12,219 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 379 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:12,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 448 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 07:37:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-19 07:37:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 152. [2023-11-19 07:37:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 135 states have (on average 1.3407407407407408) internal successors, (181), 135 states have internal predecessors, (181), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 211 transitions. [2023-11-19 07:37:12,235 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 211 transitions. Word has length 134 [2023-11-19 07:37:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:12,236 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 211 transitions. [2023-11-19 07:37:12,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-19 07:37:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 211 transitions. [2023-11-19 07:37:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 07:37:12,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:12,238 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:12,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 07:37:12,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:12,454 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:12,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1506182207, now seen corresponding path program 1 times [2023-11-19 07:37:12,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:12,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266325788] [2023-11-19 07:37:12,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:12,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:12,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:12,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634985058] [2023-11-19 07:37:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:12,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:12,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:12,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:12,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:37:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:12,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-19 07:37:12,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:15,606 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 07:37:16,056 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 07:37:16,404 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 07:37:16,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:16,892 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 17 treesize of output 17 [2023-11-19 07:37:17,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:17,044 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 22 treesize of output 15 [2023-11-19 07:37:17,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:17,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:17,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:17,121 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-11-19 07:37:17,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 42 [2023-11-19 07:37:17,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:17,141 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 33 treesize of output 22 [2023-11-19 07:37:17,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:17,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:17,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:17,531 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-19 07:37:17,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 33 [2023-11-19 07:37:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-19 07:37:17,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:18,197 WARN L854 $PredicateComparison]: unable to prove that (forall ((~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset Int) (v_ArrVal_818 (Array Int Int)) (v_ArrVal_817 (Array Int Int))) (let ((.cse0 (store (let ((.cse1 (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset |c_ULTIMATE.start_step_#t~ite9#1|)) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_817))) (store .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base (store (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset (select (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) ~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset)))) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_818))) (= (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset) 256)))) is different from false [2023-11-19 07:37:18,310 WARN L854 $PredicateComparison]: unable to prove that (forall ((~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset Int) (v_ArrVal_818 (Array Int Int)) (v_ArrVal_817 (Array Int Int))) (let ((.cse0 (store (let ((.cse1 (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset (mod (select (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset) 256))) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_817))) (store .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base (store (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset (select (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) ~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset)))) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_818))) (= (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset) 256)))) is different from false [2023-11-19 07:37:18,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266325788] [2023-11-19 07:37:18,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634985058] [2023-11-19 07:37:18,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634985058] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:18,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:18,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-19 07:37:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871269809] [2023-11-19 07:37:18,348 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:18,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:37:18,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:18,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:37:18,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=461, Unknown=17, NotChecked=90, Total=650 [2023-11-19 07:37:18,350 INFO L87 Difference]: Start difference. First operand 152 states and 211 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 07:37:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:21,633 INFO L93 Difference]: Finished difference Result 408 states and 563 transitions. [2023-11-19 07:37:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:37:21,634 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2023-11-19 07:37:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:21,637 INFO L225 Difference]: With dead ends: 408 [2023-11-19 07:37:21,637 INFO L226 Difference]: Without dead ends: 259 [2023-11-19 07:37:21,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=502, Invalid=1469, Unknown=17, NotChecked=174, Total=2162 [2023-11-19 07:37:21,639 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 573 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 11 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:21,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 905 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 721 Invalid, 20 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:37:21,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-19 07:37:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 184. [2023-11-19 07:37:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 167 states have (on average 1.3353293413173652) internal successors, (223), 167 states have internal predecessors, (223), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 253 transitions. [2023-11-19 07:37:21,657 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 253 transitions. Word has length 134 [2023-11-19 07:37:21,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:21,657 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 253 transitions. [2023-11-19 07:37:21,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 07:37:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 253 transitions. [2023-11-19 07:37:21,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 07:37:21,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:21,660 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:21,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-19 07:37:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:21,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:21,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -805117629, now seen corresponding path program 1 times [2023-11-19 07:37:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:21,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424262387] [2023-11-19 07:37:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:21,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:21,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:21,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273760200] [2023-11-19 07:37:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:21,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:21,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:21,927 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:21,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:37:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:22,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-19 07:37:22,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:25,762 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 07:37:26,196 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 07:37:26,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:26,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:26,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-11-19 07:37:26,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:26,905 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 26 treesize of output 19 [2023-11-19 07:37:26,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:26,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:26,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 39 [2023-11-19 07:37:26,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:26,978 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 37 treesize of output 26 [2023-11-19 07:37:27,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:27,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:27,226 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 43 treesize of output 19 [2023-11-19 07:37:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-19 07:37:27,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:27,333 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_921 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset (select (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset))) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_921))) (< (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset) 256)))) is different from false [2023-11-19 07:37:27,344 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_921 (Array Int Int)) (v_ArrVal_919 (Array Int Int))) (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_919))) (store .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base (store (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset (select (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset)))) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_921))) (< (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset) 256)))) is different from false [2023-11-19 07:37:27,369 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_921 (Array Int Int)) (v_ArrVal_919 (Array Int Int)) (|ULTIMATE.start_step_#t~ite9#1| Int)) (let ((.cse0 (store (let ((.cse1 (store (store |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base (store (select |c_#memory_int| c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var0_Pointer~0.offset |ULTIMATE.start_step_#t~ite9#1|)) c_~unsigned_long_int_Array_0_arrayunsigned_long_int_Array_0Var0_Pointer~0.base v_ArrVal_919))) (store .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base (store (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var3_Pointer~0.offset (select (select .cse1 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset)))) c_~unsigned_short_int_Array_0_arrayunsigned_short_int_Array_0Var0_Pointer~0.base v_ArrVal_921))) (< (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var2_Pointer~0.offset) 256) (mod (select (select .cse0 c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.base) c_~unsigned_char_Array_0_arrayunsigned_char_Array_0Var1_Pointer~0.offset) 256)))) is different from false [2023-11-19 07:37:27,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:27,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424262387] [2023-11-19 07:37:27,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:27,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273760200] [2023-11-19 07:37:27,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273760200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:27,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:27,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:37:27,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47076860] [2023-11-19 07:37:27,540 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:37:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:37:27,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=165, Unknown=3, NotChecked=84, Total=306 [2023-11-19 07:37:27,541 INFO L87 Difference]: Start difference. First operand 184 states and 253 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 07:37:28,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:28,688 INFO L93 Difference]: Finished difference Result 408 states and 561 transitions. [2023-11-19 07:37:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:37:28,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2023-11-19 07:37:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:28,691 INFO L225 Difference]: With dead ends: 408 [2023-11-19 07:37:28,691 INFO L226 Difference]: Without dead ends: 227 [2023-11-19 07:37:28,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=304, Unknown=3, NotChecked=120, Total=552 [2023-11-19 07:37:28,693 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 364 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 5 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:28,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 539 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 433 Invalid, 30 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:37:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-19 07:37:28,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 184. [2023-11-19 07:37:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 167 states have (on average 1.3293413173652695) internal successors, (222), 167 states have internal predecessors, (222), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:37:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 252 transitions. [2023-11-19 07:37:28,710 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 252 transitions. Word has length 134 [2023-11-19 07:37:28,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:28,711 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 252 transitions. [2023-11-19 07:37:28,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-19 07:37:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 252 transitions. [2023-11-19 07:37:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 07:37:28,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:28,713 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:37:28,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 07:37:28,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:28,934 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:28,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1365633597, now seen corresponding path program 1 times [2023-11-19 07:37:28,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:28,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656202654] [2023-11-19 07:37:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:28,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:28,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148611998] [2023-11-19 07:37:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:28,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:28,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:28,976 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:28,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15e43fa9-99ba-4918-a6e1-bcd5c6890350/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:37:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:29,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-19 07:37:29,275 INFO L285 TraceCheckSpWp]: Computing forward predicates...