./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme --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 043b41ee1fabb1e5ed7ee3566b548a40fae9dd3d7487c6064ec51d57b94981a7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:49:29,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:49:29,315 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:49:29,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:49:29,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:49:29,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:49:29,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:49:29,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:49:29,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:49:29,355 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:49:29,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:49:29,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:49:29,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:49:29,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:49:29,359 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:49:29,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:49:29,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:49:29,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:49:29,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:49:29,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:49:29,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:49:29,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:49:29,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:49:29,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:49:29,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:49:29,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:49:29,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:49:29,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:49:29,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:49:29,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:49:29,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:49:29,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:29,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:49:29,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:49:29,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:49:29,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:49:29,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:49:29,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:49:29,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:49:29,370 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:49:29,370 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:49:29,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:49:29,371 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_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 043b41ee1fabb1e5ed7ee3566b548a40fae9dd3d7487c6064ec51d57b94981a7 [2023-11-26 11:49:29,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:49:29,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:49:29,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:49:29,685 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:49:29,685 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:49:29,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.i [2023-11-26 11:49:33,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:33,230 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:33,230 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.i [2023-11-26 11:49:33,247 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/data/2be00d143/daad5830bf65400b96daaf35781852e5/FLAGd87f31b86 [2023-11-26 11:49:33,267 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/data/2be00d143/daad5830bf65400b96daaf35781852e5 [2023-11-26 11:49:33,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:33,280 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:33,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:33,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:33,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:33,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607d1c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33, skipping insertion in model container [2023-11-26 11:49:33,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,334 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:33,514 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_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.i[917,930] [2023-11-26 11:49:33,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:33,616 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:33,630 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_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.i[917,930] [2023-11-26 11:49:33,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:33,699 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:33,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33 WrapperNode [2023-11-26 11:49:33,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:33,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:33,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:33,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:33,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,786 INFO L138 Inliner]: procedures = 26, calls = 169, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 438 [2023-11-26 11:49:33,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:33,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:33,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:33,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:33,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,834 INFO L175 MemorySlicer]: Split 138 memory accesses to 2 slices as follows [2, 136]. 99 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 14]. The 18 writes are split as follows [0, 18]. [2023-11-26 11:49:33,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:33,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:33,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:33,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:33,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (1/1) ... [2023-11-26 11:49:33,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:33,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:33,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:33,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:33,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:49:33,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:49:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:49:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:49:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:49:33,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:49:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:49:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:49:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:33,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:34,132 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:34,134 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:34,742 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:34,781 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:34,781 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:49:34,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:34 BoogieIcfgContainer [2023-11-26 11:49:34,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:34,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:34,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:34,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:34,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:49:33" (1/3) ... [2023-11-26 11:49:34,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532c8ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:34, skipping insertion in model container [2023-11-26 11:49:34,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:33" (2/3) ... [2023-11-26 11:49:34,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532c8ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:34, skipping insertion in model container [2023-11-26 11:49:34,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:34" (3/3) ... [2023-11-26 11:49:34,791 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-71.i [2023-11-26 11:49:34,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:34,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:49:34,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:34,869 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;@18456bdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:34,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:49:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 77 states have internal predecessors, (108), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:49:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 11:49:34,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:34,891 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:34,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:34,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash 550506585, now seen corresponding path program 1 times [2023-11-26 11:49:34,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:34,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704225615] [2023-11-26 11:49:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:34,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:49:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:49:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:49:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:49:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:49:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:49:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:49:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:49:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:49:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:49:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 11:49:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:49:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:49:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:49:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 11:49:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:49:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:49:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:49:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 11:49:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-26 11:49:35,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704225615] [2023-11-26 11:49:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704225615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:35,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:35,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212870719] [2023-11-26 11:49:35,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:35,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:49:35,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:35,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:49:35,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:35,444 INFO L87 Difference]: Start difference. First operand has 98 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 77 states have internal predecessors, (108), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 11:49:35,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:35,512 INFO L93 Difference]: Finished difference Result 193 states and 309 transitions. [2023-11-26 11:49:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:49:35,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 139 [2023-11-26 11:49:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:35,525 INFO L225 Difference]: With dead ends: 193 [2023-11-26 11:49:35,525 INFO L226 Difference]: Without dead ends: 96 [2023-11-26 11:49:35,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:35,534 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:35,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:49:35,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-26 11:49:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-26 11:49:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:49:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions. [2023-11-26 11:49:35,592 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 139 [2023-11-26 11:49:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:35,592 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions. [2023-11-26 11:49:35,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 11:49:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions. [2023-11-26 11:49:35,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 11:49:35,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:35,598 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:35,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:35,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:35,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1928891265, now seen corresponding path program 1 times [2023-11-26 11:49:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:35,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940674745] [2023-11-26 11:49:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:35,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:49:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:49:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:35,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:49:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:49:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:49:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:49:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:49:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:49:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:49:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:49:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 11:49:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:49:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:49:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:49:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 11:49:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:49:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:49:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:49:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 11:49:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-26 11:49:36,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:36,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940674745] [2023-11-26 11:49:36,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940674745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:36,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:36,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:49:36,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657318268] [2023-11-26 11:49:36,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:36,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:36,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:36,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:36,075 INFO L87 Difference]: Start difference. First operand 96 states and 139 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:36,170 INFO L93 Difference]: Finished difference Result 199 states and 288 transitions. [2023-11-26 11:49:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:49:36,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 139 [2023-11-26 11:49:36,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:36,174 INFO L225 Difference]: With dead ends: 199 [2023-11-26 11:49:36,174 INFO L226 Difference]: Without dead ends: 104 [2023-11-26 11:49:36,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:49:36,177 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 12 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:36,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 393 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:49:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-26 11:49:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-11-26 11:49:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 77 states have internal predecessors, (103), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:49:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 141 transitions. [2023-11-26 11:49:36,198 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 141 transitions. Word has length 139 [2023-11-26 11:49:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:36,203 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 141 transitions. [2023-11-26 11:49:36,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 141 transitions. [2023-11-26 11:49:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 11:49:36,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:36,207 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:36,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:49:36,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:36,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:36,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1871632963, now seen corresponding path program 1 times [2023-11-26 11:49:36,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:36,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335287877] [2023-11-26 11:49:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:36,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:49:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:49:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:49:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:49:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:49:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:49:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:49:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:49:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:49:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:49:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 11:49:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:49:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:49:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:49:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 11:49:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:49:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:49:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:49:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 11:49:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-26 11:49:36,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:36,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335287877] [2023-11-26 11:49:36,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335287877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:36,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:36,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:49:36,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134505005] [2023-11-26 11:49:36,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:36,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:36,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:36,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:36,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:36,591 INFO L87 Difference]: Start difference. First operand 98 states and 141 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:36,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:36,672 INFO L93 Difference]: Finished difference Result 199 states and 286 transitions. [2023-11-26 11:49:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:49:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 139 [2023-11-26 11:49:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:36,680 INFO L225 Difference]: With dead ends: 199 [2023-11-26 11:49:36,682 INFO L226 Difference]: Without dead ends: 102 [2023-11-26 11:49:36,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:49:36,688 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 3 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:36,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 394 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:49:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-26 11:49:36,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2023-11-26 11:49:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 states have internal predecessors, (105), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:49:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 143 transitions. [2023-11-26 11:49:36,717 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 143 transitions. Word has length 139 [2023-11-26 11:49:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:36,719 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 143 transitions. [2023-11-26 11:49:36,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 143 transitions. [2023-11-26 11:49:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 11:49:36,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:36,727 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:36,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:49:36,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:36,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:36,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1871573381, now seen corresponding path program 1 times [2023-11-26 11:49:36,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:36,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83199387] [2023-11-26 11:49:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:36,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:49:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:49:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:49:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:49:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:49:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:49:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:49:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:49:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:49:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:49:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 11:49:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:49:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:49:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:49:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 11:49:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:49:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:49:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:49:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 11:49:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-26 11:49:38,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:38,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83199387] [2023-11-26 11:49:38,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83199387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:38,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:38,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:49:38,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979098910] [2023-11-26 11:49:38,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:38,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:49:38,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:38,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:49:38,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:49:38,381 INFO L87 Difference]: Start difference. First operand 100 states and 143 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:39,183 INFO L93 Difference]: Finished difference Result 289 states and 410 transitions. [2023-11-26 11:49:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:49:39,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 139 [2023-11-26 11:49:39,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:39,187 INFO L225 Difference]: With dead ends: 289 [2023-11-26 11:49:39,187 INFO L226 Difference]: Without dead ends: 190 [2023-11-26 11:49:39,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:39,189 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 234 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:39,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 426 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:49:39,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-26 11:49:39,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 108. [2023-11-26 11:49:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:49:39,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 156 transitions. [2023-11-26 11:49:39,212 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 156 transitions. Word has length 139 [2023-11-26 11:49:39,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:39,213 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 156 transitions. [2023-11-26 11:49:39,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 156 transitions. [2023-11-26 11:49:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-26 11:49:39,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:39,216 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:49:39,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:39,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1203109700, now seen corresponding path program 1 times [2023-11-26 11:49:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462961870] [2023-11-26 11:49:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:39,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:39,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:39,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754597656] [2023-11-26 11:49:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:39,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:39,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:39,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:39,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:39,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-26 11:49:39,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:44,273 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 [2023-11-26 11:49:44,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:44,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-26 11:49:44,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:44,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:44,559 INFO L349 Elim1Store]: treesize reduction 78, result has 25.7 percent of original size [2023-11-26 11:49:44,560 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 3 case distinctions, treesize of input 32 treesize of output 39 [2023-11-26 11:49:44,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:44,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-26 11:49:44,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:44,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-11-26 11:49:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-26 11:49:44,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:44,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:44,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462961870] [2023-11-26 11:49:44,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754597656] [2023-11-26 11:49:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754597656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:44,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:44,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:49:44,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972082621] [2023-11-26 11:49:44,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:44,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:49:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:49:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:44,795 INFO L87 Difference]: Start difference. First operand 108 states and 156 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:46,332 INFO L93 Difference]: Finished difference Result 360 states and 507 transitions. [2023-11-26 11:49:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:49:46,333 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 140 [2023-11-26 11:49:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:46,335 INFO L225 Difference]: With dead ends: 360 [2023-11-26 11:49:46,336 INFO L226 Difference]: Without dead ends: 253 [2023-11-26 11:49:46,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:49:46,337 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 420 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:46,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 501 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:49:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-26 11:49:46,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 108. [2023-11-26 11:49:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:49:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 156 transitions. [2023-11-26 11:49:46,363 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 156 transitions. Word has length 140 [2023-11-26 11:49:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:46,364 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 156 transitions. [2023-11-26 11:49:46,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 156 transitions. [2023-11-26 11:49:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-26 11:49:46,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:46,367 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:46,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:46,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:46,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:46,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1223037624, now seen corresponding path program 1 times [2023-11-26 11:49:46,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:46,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247249170] [2023-11-26 11:49:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:49:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:49:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:49:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:49:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:49:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:49:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:49:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:49:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:49:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:49:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 11:49:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:49:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:49:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:49:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 11:49:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:49:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:49:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:49:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 11:49:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-26 11:49:48,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247249170] [2023-11-26 11:49:48,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247249170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:48,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:48,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:49:48,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409460381] [2023-11-26 11:49:48,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:48,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:49:48,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:48,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:49:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:49:48,362 INFO L87 Difference]: Start difference. First operand 108 states and 156 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:48,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:48,984 INFO L93 Difference]: Finished difference Result 287 states and 412 transitions. [2023-11-26 11:49:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:49:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 140 [2023-11-26 11:49:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:48,987 INFO L225 Difference]: With dead ends: 287 [2023-11-26 11:49:48,987 INFO L226 Difference]: Without dead ends: 180 [2023-11-26 11:49:48,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:48,989 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 309 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:48,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 281 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:49:48,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-26 11:49:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 124. [2023-11-26 11:49:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 103 states have (on average 1.3689320388349515) internal successors, (141), 103 states have internal predecessors, (141), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:49:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 179 transitions. [2023-11-26 11:49:49,017 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 179 transitions. Word has length 140 [2023-11-26 11:49:49,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:49,018 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 179 transitions. [2023-11-26 11:49:49,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:49,019 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 179 transitions. [2023-11-26 11:49:49,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 11:49:49,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:49,021 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:49,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:49:49,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:49,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:49,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1792808450, now seen corresponding path program 1 times [2023-11-26 11:49:49,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:49,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915205595] [2023-11-26 11:49:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:49,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:49:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:49:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:49:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:49:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:49:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:49:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:49:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:49:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:49:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:49:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 11:49:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 11:49:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:49:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:49:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 11:49:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:49:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 11:49:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 11:49:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 11:49:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-26 11:49:51,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:51,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915205595] [2023-11-26 11:49:51,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915205595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:51,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:51,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:49:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339400221] [2023-11-26 11:49:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:51,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:49:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:51,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:49:51,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:51,331 INFO L87 Difference]: Start difference. First operand 124 states and 179 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:52,264 INFO L93 Difference]: Finished difference Result 320 states and 457 transitions. [2023-11-26 11:49:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:49:52,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2023-11-26 11:49:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:52,268 INFO L225 Difference]: With dead ends: 320 [2023-11-26 11:49:52,268 INFO L226 Difference]: Without dead ends: 197 [2023-11-26 11:49:52,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:49:52,269 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 240 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:52,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 563 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:49:52,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-26 11:49:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 139. [2023-11-26 11:49:52,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 118 states have internal predecessors, (162), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 11:49:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 200 transitions. [2023-11-26 11:49:52,308 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 200 transitions. Word has length 141 [2023-11-26 11:49:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:52,309 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 200 transitions. [2023-11-26 11:49:52,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:49:52,309 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 200 transitions. [2023-11-26 11:49:52,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 11:49:52,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:52,311 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:52,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:49:52,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:52,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash -397142625, now seen corresponding path program 1 times [2023-11-26 11:49:52,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:52,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310631190] [2023-11-26 11:49:52,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:52,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:52,346 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:52,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813412776] [2023-11-26 11:49:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:52,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:52,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:52,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3861ca-1eac-4fb6-b7fa-e22ffbe2eb17/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:49:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:52,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-26 11:49:52,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:57,779 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-26 11:49:57,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2023-11-26 11:49:57,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:57,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:57,941 INFO L349 Elim1Store]: treesize reduction 45, result has 25.0 percent of original size [2023-11-26 11:49:57,941 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2023-11-26 11:49:58,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:58,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:58,062 INFO L349 Elim1Store]: treesize reduction 78, result has 25.7 percent of original size [2023-11-26 11:49:58,062 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 3 case distinctions, treesize of input 32 treesize of output 39 [2023-11-26 11:49:58,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:58,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-26 11:49:58,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:58,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-26 11:49:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-11-26 11:49:58,221 INFO L327 TraceCheckSpWp]: Computing backward predicates...