./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC --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 4a3cef13903dd032b032a92c3e6d07b1ee77361a4ee844998d70fb602ded6daa --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:32:22,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:32:22,538 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:32:22,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:32:22,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:32:22,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:32:22,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:32:22,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:32:22,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:32:22,570 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:32:22,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:32:22,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:32:22,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:32:22,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:32:22,571 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:32:22,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:32:22,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:32:22,572 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:32:22,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:32:22,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:32:22,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:32:22,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:32:22,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:32:22,572 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:32:22,572 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:32:22,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:32:22,573 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:32:22,573 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:32:22,573 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:32:22,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:32:22,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:32:22,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:32:22,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:32:22,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:32:22,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:32:22,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:32:22,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:32:22,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:32:22,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:32:22,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:32:22,574 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:32:22,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:32:22,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:32:22,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:32:22,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:32:22,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:32:22,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:32:22,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:32:22,575 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC 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 -> 4a3cef13903dd032b032a92c3e6d07b1ee77361a4ee844998d70fb602ded6daa [2024-11-24 01:32:22,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:32:22,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:32:22,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:32:22,921 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:32:22,921 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:32:22,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c [2024-11-24 01:32:25,970 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/data/6025092ae/c6313332549b4ef1b117c97a0200ebfd/FLAG4312210f8 [2024-11-24 01:32:26,240 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:32:26,247 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c [2024-11-24 01:32:26,264 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/data/6025092ae/c6313332549b4ef1b117c97a0200ebfd/FLAG4312210f8 [2024-11-24 01:32:26,319 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/data/6025092ae/c6313332549b4ef1b117c97a0200ebfd [2024-11-24 01:32:26,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:32:26,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:32:26,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:32:26,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:32:26,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:32:26,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7124bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26, skipping insertion in model container [2024-11-24 01:32:26,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,372 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:32:26,537 WARN L250 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_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c[573,586] [2024-11-24 01:32:26,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:32:26,566 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:32:26,579 WARN L250 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_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c[573,586] [2024-11-24 01:32:26,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:32:26,607 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:32:26,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26 WrapperNode [2024-11-24 01:32:26,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:32:26,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:32:26,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:32:26,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:32:26,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,647 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2024-11-24 01:32:26,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:32:26,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:32:26,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:32:26,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:32:26,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,676 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:32:26,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,683 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:32:26,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:32:26,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:32:26,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:32:26,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (1/1) ... [2024-11-24 01:32:26,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:32:26,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:26,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:32:26,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:32:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:32:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:32:26,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:32:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:32:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:32:26,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:32:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 01:32:26,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 01:32:26,814 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:32:26,816 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:32:26,940 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-24 01:32:26,940 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:32:26,950 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:32:26,950 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:32:26,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:32:26 BoogieIcfgContainer [2024-11-24 01:32:26,951 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:32:26,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:32:26,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:32:26,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:32:26,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:32:26" (1/3) ... [2024-11-24 01:32:26,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321ab0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:32:26, skipping insertion in model container [2024-11-24 01:32:26,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:32:26" (2/3) ... [2024-11-24 01:32:26,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321ab0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:32:26, skipping insertion in model container [2024-11-24 01:32:26,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:32:26" (3/3) ... [2024-11-24 01:32:26,960 INFO L128 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound20.c [2024-11-24 01:32:26,975 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:32:26,977 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mannadiv_unwindbound20.c that has 3 procedures, 25 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:32:27,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:32:27,056 INFO L333 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, 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;@7c1b69b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:32:27,057 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:32:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-24 01:32:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-24 01:32:27,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:27,070 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:27,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:27,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times [2024-11-24 01:32:27,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:27,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886523734] [2024-11-24 01:32:27,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:27,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:32:27,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886523734] [2024-11-24 01:32:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886523734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:27,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345443833] [2024-11-24 01:32:27,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:27,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:27,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:27,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:27,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:32:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:27,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:32:27,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:32:27,363 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:32:27,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345443833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:27,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:32:27,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:32:27,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188757554] [2024-11-24 01:32:27,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:27,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:32:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:27,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:32:27,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:32:27,392 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 01:32:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:27,412 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-11-24 01:32:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:32:27,415 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-24 01:32:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:27,421 INFO L225 Difference]: With dead ends: 47 [2024-11-24 01:32:27,421 INFO L226 Difference]: Without dead ends: 21 [2024-11-24 01:32:27,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:32:27,428 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:27,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:32:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-24 01:32:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-24 01:32:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:32:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-24 01:32:27,469 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2024-11-24 01:32:27,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:27,470 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-24 01:32:27,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 01:32:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-24 01:32:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-24 01:32:27,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:27,471 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:27,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:32:27,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:32:27,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:27,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:27,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1316097620, now seen corresponding path program 1 times [2024-11-24 01:32:27,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:27,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54606970] [2024-11-24 01:32:27,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 01:32:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836830714] [2024-11-24 01:32:27,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:27,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:27,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:27,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:27,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:32:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:27,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:32:27,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:27,909 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:32:27,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:27,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54606970] [2024-11-24 01:32:27,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 01:32:27,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836830714] [2024-11-24 01:32:27,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836830714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:27,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:27,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:32:27,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656730004] [2024-11-24 01:32:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:27,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:32:27,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:27,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:32:27,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:32:27,915 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:32:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:28,018 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-11-24 01:32:28,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:32:28,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-24 01:32:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:28,021 INFO L225 Difference]: With dead ends: 33 [2024-11-24 01:32:28,021 INFO L226 Difference]: Without dead ends: 31 [2024-11-24 01:32:28,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:32:28,022 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:28,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-24 01:32:28,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-11-24 01:32:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-24 01:32:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-24 01:32:28,036 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 19 [2024-11-24 01:32:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:28,037 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-24 01:32:28,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:32:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-24 01:32:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-24 01:32:28,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:28,040 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:28,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:32:28,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 01:32:28,241 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:28,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1318004244, now seen corresponding path program 1 times [2024-11-24 01:32:28,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:28,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410945540] [2024-11-24 01:32:28,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:28,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:28,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:28,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410945540] [2024-11-24 01:32:28,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410945540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:28,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:32:28,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:32:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344878165] [2024-11-24 01:32:28,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:28,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:32:28,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:28,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:32:28,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:28,338 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:32:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:28,356 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-24 01:32:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:32:28,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-24 01:32:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:28,358 INFO L225 Difference]: With dead ends: 35 [2024-11-24 01:32:28,358 INFO L226 Difference]: Without dead ends: 28 [2024-11-24 01:32:28,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:32:28,360 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:28,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:32:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-24 01:32:28,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-24 01:32:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-24 01:32:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-24 01:32:28,374 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2024-11-24 01:32:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:28,374 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-24 01:32:28,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-24 01:32:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-24 01:32:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-24 01:32:28,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:28,375 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:28,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:32:28,376 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:28,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1691684484, now seen corresponding path program 1 times [2024-11-24 01:32:28,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:28,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136022032] [2024-11-24 01:32:28,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:28,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:28,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136022032] [2024-11-24 01:32:28,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136022032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572361294] [2024-11-24 01:32:28,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:28,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:28,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:28,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:28,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:32:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:28,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:32:28,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:29,038 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:32:29,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572361294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:29,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:32:29,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-24 01:32:29,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302043672] [2024-11-24 01:32:29,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:29,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:32:29,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:29,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:32:29,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:32:29,040 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 01:32:29,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:29,112 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-24 01:32:29,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:32:29,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-11-24 01:32:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:29,114 INFO L225 Difference]: With dead ends: 37 [2024-11-24 01:32:29,114 INFO L226 Difference]: Without dead ends: 30 [2024-11-24 01:32:29,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:32:29,115 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:29,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 86 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:29,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-24 01:32:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-24 01:32:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-24 01:32:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-24 01:32:29,126 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 25 [2024-11-24 01:32:29,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:29,126 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-24 01:32:29,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 01:32:29,126 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-24 01:32:29,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-24 01:32:29,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:29,127 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:29,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 01:32:29,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-24 01:32:29,328 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:29,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:29,328 INFO L85 PathProgramCache]: Analyzing trace with hash -147457855, now seen corresponding path program 1 times [2024-11-24 01:32:29,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:29,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124234003] [2024-11-24 01:32:29,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:29,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 01:32:29,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681272252] [2024-11-24 01:32:29,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:29,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:29,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:29,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:29,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:32:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:29,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 01:32:29,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:29,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:29,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:29,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124234003] [2024-11-24 01:32:29,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 01:32:29,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681272252] [2024-11-24 01:32:29,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681272252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:29,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:32:29,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-24 01:32:29,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490845848] [2024-11-24 01:32:29,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:29,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:32:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:29,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:32:29,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:32:29,704 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:32:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:29,848 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-24 01:32:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:32:29,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2024-11-24 01:32:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:29,850 INFO L225 Difference]: With dead ends: 59 [2024-11-24 01:32:29,850 INFO L226 Difference]: Without dead ends: 45 [2024-11-24 01:32:29,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:32:29,853 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:29,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-24 01:32:29,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2024-11-24 01:32:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-24 01:32:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-11-24 01:32:29,866 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 28 [2024-11-24 01:32:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:29,866 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-11-24 01:32:29,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-24 01:32:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-11-24 01:32:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-24 01:32:29,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:29,868 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:29,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:32:30,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:30,070 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:30,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash -145551231, now seen corresponding path program 1 times [2024-11-24 01:32:30,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096094181] [2024-11-24 01:32:30,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:30,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:30,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096094181] [2024-11-24 01:32:30,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096094181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:30,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515288359] [2024-11-24 01:32:30,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:30,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:30,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:30,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:30,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:32:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:30,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:32:30,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:30,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:30,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515288359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:30,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:30,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-24 01:32:30,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103306363] [2024-11-24 01:32:30,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:30,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:32:30,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:30,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:32:30,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:32:30,369 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-24 01:32:30,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:30,467 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2024-11-24 01:32:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:32:30,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 28 [2024-11-24 01:32:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:30,468 INFO L225 Difference]: With dead ends: 72 [2024-11-24 01:32:30,468 INFO L226 Difference]: Without dead ends: 67 [2024-11-24 01:32:30,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:32:30,469 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 32 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:30,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 106 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-24 01:32:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2024-11-24 01:32:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-24 01:32:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-24 01:32:30,486 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 28 [2024-11-24 01:32:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:30,487 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-24 01:32:30,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-24 01:32:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-24 01:32:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-24 01:32:30,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:30,488 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:30,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:32:30,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:30,689 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:30,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1574868521, now seen corresponding path program 1 times [2024-11-24 01:32:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875121423] [2024-11-24 01:32:30,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:30,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:32:30,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875121423] [2024-11-24 01:32:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875121423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092134379] [2024-11-24 01:32:30,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:30,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:30,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:30,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:30,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:32:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:31,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-24 01:32:31,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:32:31,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:32:31,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092134379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:31,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:31,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 15 [2024-11-24 01:32:31,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222321124] [2024-11-24 01:32:31,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:31,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:32:31,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:31,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:32:31,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:32:31,383 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:32:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:31,573 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2024-11-24 01:32:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:32:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 34 [2024-11-24 01:32:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:31,574 INFO L225 Difference]: With dead ends: 66 [2024-11-24 01:32:31,575 INFO L226 Difference]: Without dead ends: 60 [2024-11-24 01:32:31,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:32:31,576 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:31,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 155 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-24 01:32:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2024-11-24 01:32:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-24 01:32:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2024-11-24 01:32:31,600 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 34 [2024-11-24 01:32:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:31,600 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2024-11-24 01:32:31,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 01:32:31,602 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2024-11-24 01:32:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 01:32:31,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:31,604 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:31,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:32:31,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:31,804 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:31,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1700883628, now seen corresponding path program 2 times [2024-11-24 01:32:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:31,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401424374] [2024-11-24 01:32:31,805 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:32:31,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:31,844 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:32:31,844 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 01:32:32,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401424374] [2024-11-24 01:32:32,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401424374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858461246] [2024-11-24 01:32:32,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:32:32,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:32,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:32,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:32,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:32:32,142 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:32:32,142 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:32,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:32:32,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:32,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 01:32:32,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858461246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:32,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:32,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 15 [2024-11-24 01:32:32,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453786002] [2024-11-24 01:32:32,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:32,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:32:32,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:32,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:32:32,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:32:32,431 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 11 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-24 01:32:32,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:32,666 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2024-11-24 01:32:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:32:32,667 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 11 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 55 [2024-11-24 01:32:32,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:32,668 INFO L225 Difference]: With dead ends: 116 [2024-11-24 01:32:32,668 INFO L226 Difference]: Without dead ends: 111 [2024-11-24 01:32:32,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:32:32,669 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 43 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:32,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 140 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:32:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-24 01:32:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-24 01:32:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 85 states have internal predecessors, (96), 14 states have call successors, (14), 12 states have call predecessors, (14), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-24 01:32:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2024-11-24 01:32:32,702 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 55 [2024-11-24 01:32:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:32,702 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2024-11-24 01:32:32,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 11 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-24 01:32:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2024-11-24 01:32:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-24 01:32:32,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:32,707 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:32,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:32:32,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:32,908 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:32,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash 592653108, now seen corresponding path program 3 times [2024-11-24 01:32:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:32,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212908763] [2024-11-24 01:32:32,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:32:32,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:32,967 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-24 01:32:32,967 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-24 01:32:33,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:32:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212908763] [2024-11-24 01:32:33,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212908763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221252848] [2024-11-24 01:32:33,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:32:34,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:34,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:34,004 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:34,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:32:34,125 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-24 01:32:34,125 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:34,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-24 01:32:34,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:32:34,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-24 01:32:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221252848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:34,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:34,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 14] total 31 [2024-11-24 01:32:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622457063] [2024-11-24 01:32:34,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:34,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 01:32:34,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:34,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 01:32:34,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=548, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:32:34,895 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 21 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (35), 20 states have call predecessors, (35), 20 states have call successors, (35) [2024-11-24 01:32:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:35,387 INFO L93 Difference]: Finished difference Result 206 states and 237 transitions. [2024-11-24 01:32:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-24 01:32:35,388 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 21 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (35), 20 states have call predecessors, (35), 20 states have call successors, (35) Word has length 109 [2024-11-24 01:32:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:35,390 INFO L225 Difference]: With dead ends: 206 [2024-11-24 01:32:35,390 INFO L226 Difference]: Without dead ends: 201 [2024-11-24 01:32:35,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 206 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=665, Invalid=1141, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 01:32:35,392 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 98 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:35,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 188 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:32:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-24 01:32:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-24 01:32:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 155 states have (on average 1.135483870967742) internal successors, (176), 155 states have internal predecessors, (176), 24 states have call successors, (24), 22 states have call predecessors, (24), 21 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-24 01:32:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 223 transitions. [2024-11-24 01:32:35,428 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 223 transitions. Word has length 109 [2024-11-24 01:32:35,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:35,429 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 223 transitions. [2024-11-24 01:32:35,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 21 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (35), 20 states have call predecessors, (35), 20 states have call successors, (35) [2024-11-24 01:32:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 223 transitions. [2024-11-24 01:32:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:32:35,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:35,436 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:35,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:32:35,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:35,642 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:35,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1158940756, now seen corresponding path program 4 times [2024-11-24 01:32:35,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:35,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881998967] [2024-11-24 01:32:35,643 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:32:35,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:32:35,778 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:32:35,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-24 01:32:35,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134519302] [2024-11-24 01:32:35,782 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:32:35,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:35,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:35,785 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:35,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:32:35,936 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:32:35,936 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-24 01:32:35,937 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:32:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:32:36,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 01:32:36,091 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:32:36,092 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 01:32:36,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:32:36,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:36,300 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:36,387 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:32:36,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:32:36 BoogieIcfgContainer [2024-11-24 01:32:36,390 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:32:36,391 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:32:36,391 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:32:36,391 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:32:36,392 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:32:26" (3/4) ... [2024-11-24 01:32:36,393 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-24 01:32:36,493 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 130. [2024-11-24 01:32:36,626 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 01:32:36,626 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 01:32:36,627 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:32:36,629 INFO L158 Benchmark]: Toolchain (without parser) took 10300.58ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 119.4MB in the beginning and 267.4MB in the end (delta: -148.0MB). Peak memory consumption was 114.0MB. Max. memory is 16.1GB. [2024-11-24 01:32:36,629 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:32:36,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.24ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 108.0MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:32:36,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.79ms. Allocated memory is still 142.6MB. Free memory was 108.0MB in the beginning and 107.0MB in the end (delta: 957.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:32:36,631 INFO L158 Benchmark]: Boogie Preprocessor took 42.85ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 105.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:32:36,631 INFO L158 Benchmark]: RCFGBuilder took 259.64ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 95.6MB in the end (delta: 10.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:32:36,631 INFO L158 Benchmark]: TraceAbstraction took 9437.15ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 95.1MB in the beginning and 279.9MB in the end (delta: -184.8MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. [2024-11-24 01:32:36,631 INFO L158 Benchmark]: Witness Printer took 235.97ms. Allocated memory is still 411.0MB. Free memory was 279.9MB in the beginning and 267.4MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:32:36,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.24ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 108.0MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.79ms. Allocated memory is still 142.6MB. Free memory was 108.0MB in the beginning and 107.0MB in the end (delta: 957.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.85ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 105.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 259.64ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 95.6MB in the end (delta: 10.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9437.15ms. Allocated memory was 142.6MB in the beginning and 411.0MB in the end (delta: 268.4MB). Free memory was 95.1MB in the beginning and 279.9MB in the end (delta: -184.8MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. * Witness Printer took 235.97ms. Allocated memory is still 411.0MB. Free memory was 279.9MB in the beginning and 267.4MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [counter=0, x1=21, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [counter=0, x1=21, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0, x1=21, x2=1, y1=0, y2=0, y3=21] [L36] EXPR counter++ VAL [counter=1, x1=21, x2=1, y1=0, y2=0, y3=21] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=1, x1=21, x2=1, y1=0, y2=0, y3=21] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1, x1=21, x2=1, y1=0, y2=0, y3=21] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1, x1=21, x2=1, y1=1, y2=0, y3=20] [L36] EXPR counter++ VAL [counter=2, x1=21, x2=1, y1=1, y2=0, y3=20] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=2, x1=21, x2=1, y1=1, y2=0, y3=20] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2, x1=21, x2=1, y1=1, y2=0, y3=20] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2, x1=21, x2=1, y1=2, y2=0, y3=19] [L36] EXPR counter++ VAL [counter=3, x1=21, x2=1, y1=2, y2=0, y3=19] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=3, x1=21, x2=1, y1=2, y2=0, y3=19] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3, x1=21, x2=1, y1=2, y2=0, y3=19] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3, x1=21, x2=1, y1=3, y2=0, y3=18] [L36] EXPR counter++ VAL [counter=4, x1=21, x2=1, y1=3, y2=0, y3=18] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=4, x1=21, x2=1, y1=3, y2=0, y3=18] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4, x1=21, x2=1, y1=3, y2=0, y3=18] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4, x1=21, x2=1, y1=4, y2=0, y3=17] [L36] EXPR counter++ VAL [counter=5, x1=21, x2=1, y1=4, y2=0, y3=17] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=5, x1=21, x2=1, y1=4, y2=0, y3=17] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5, x1=21, x2=1, y1=4, y2=0, y3=17] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5, x1=21, x2=1, y1=5, y2=0, y3=16] [L36] EXPR counter++ VAL [counter=6, x1=21, x2=1, y1=5, y2=0, y3=16] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=6, x1=21, x2=1, y1=5, y2=0, y3=16] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=6, x1=21, x2=1, y1=5, y2=0, y3=16] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6, x1=21, x2=1, y1=6, y2=0, y3=15] [L36] EXPR counter++ VAL [counter=7, x1=21, x2=1, y1=6, y2=0, y3=15] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=7, x1=21, x2=1, y1=6, y2=0, y3=15] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=7, x1=21, x2=1, y1=6, y2=0, y3=15] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7, x1=21, x2=1, y1=7, y2=0, y3=14] [L36] EXPR counter++ VAL [counter=8, x1=21, x2=1, y1=7, y2=0, y3=14] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=8, x1=21, x2=1, y1=7, y2=0, y3=14] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=8, x1=21, x2=1, y1=7, y2=0, y3=14] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8, x1=21, x2=1, y1=8, y2=0, y3=13] [L36] EXPR counter++ VAL [counter=9, x1=21, x2=1, y1=8, y2=0, y3=13] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=9, x1=21, x2=1, y1=8, y2=0, y3=13] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=9, x1=21, x2=1, y1=8, y2=0, y3=13] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9, x1=21, x2=1, y1=9, y2=0, y3=12] [L36] EXPR counter++ VAL [counter=10, x1=21, x2=1, y1=9, y2=0, y3=12] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=10, x1=21, x2=1, y1=9, y2=0, y3=12] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=10, x1=21, x2=1, y1=9, y2=0, y3=12] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10, x1=21, x2=1, y1=10, y2=0, y3=11] [L36] EXPR counter++ VAL [counter=11, x1=21, x2=1, y1=10, y2=0, y3=11] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=11] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=11] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=11, x1=21, x2=1, y1=10, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=11, x1=21, x2=1, y1=10, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=11, x1=21, x2=1, y1=11, y2=0, y3=10] [L36] EXPR counter++ VAL [counter=12, x1=21, x2=1, y1=11, y2=0, y3=10] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=12] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=12] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=12, x1=21, x2=1, y1=11, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=12, x1=21, x2=1, y1=11, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=12, x1=21, x2=1, y1=12, y2=0, y3=9] [L36] EXPR counter++ VAL [counter=13, x1=21, x2=1, y1=12, y2=0, y3=9] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=13] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=13] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=13, x1=21, x2=1, y1=12, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=13, x1=21, x2=1, y1=12, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=13, x1=21, x2=1, y1=13, y2=0, y3=8] [L36] EXPR counter++ VAL [counter=14, x1=21, x2=1, y1=13, y2=0, y3=8] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=14] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=14] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=14, x1=21, x2=1, y1=13, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=14, x1=21, x2=1, y1=13, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=14, x1=21, x2=1, y1=14, y2=0, y3=7] [L36] EXPR counter++ VAL [counter=15, x1=21, x2=1, y1=14, y2=0, y3=7] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=15] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=15] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=15, x1=21, x2=1, y1=14, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=15, x1=21, x2=1, y1=14, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=15, x1=21, x2=1, y1=15, y2=0, y3=6] [L36] EXPR counter++ VAL [counter=16, x1=21, x2=1, y1=15, y2=0, y3=6] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=16] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=16] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=16, x1=21, x2=1, y1=15, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=16, x1=21, x2=1, y1=15, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=16, x1=21, x2=1, y1=16, y2=0, y3=5] [L36] EXPR counter++ VAL [counter=17, x1=21, x2=1, y1=16, y2=0, y3=5] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=17] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=17] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=17, x1=21, x2=1, y1=16, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=17, x1=21, x2=1, y1=16, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=17, x1=21, x2=1, y1=17, y2=0, y3=4] [L36] EXPR counter++ VAL [counter=18, x1=21, x2=1, y1=17, y2=0, y3=4] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=18] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=18] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=18, x1=21, x2=1, y1=17, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=18, x1=21, x2=1, y1=17, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=18, x1=21, x2=1, y1=18, y2=0, y3=3] [L36] EXPR counter++ VAL [counter=19, x1=21, x2=1, y1=18, y2=0, y3=3] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=19] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=19] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=19, x1=21, x2=1, y1=18, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=19, x1=21, x2=1, y1=18, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=19, x1=21, x2=1, y1=19, y2=0, y3=2] [L36] EXPR counter++ VAL [counter=20, x1=21, x2=1, y1=19, y2=0, y3=2] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=20] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=20] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=20, x1=21, x2=1, y1=19, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=20, x1=21, x2=1, y1=19, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=20, x1=21, x2=1, y1=20, y2=0, y3=1] [L36] EXPR counter++ VAL [counter=21, x1=21, x2=1, y1=20, y2=0, y3=1] [L36] COND FALSE !(counter++<20) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, counter=21] [L16] COND TRUE !(cond) VAL [\old(cond)=0, counter=21] [L18] reach_error() VAL [\old(cond)=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 10, TraceHistogramMax: 21, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 216 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 927 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 729 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 407 IncrementalHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 198 mSDtfsCounter, 407 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 645 GetRequests, 531 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=9, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1049 NumberOfCodeBlocks, 1049 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 838 ConstructedInterpolants, 0 QuantifiedInterpolants, 2115 SizeOfPredicates, 20 NumberOfNonLiveVariables, 929 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 612/1687 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-24 01:32:36,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5b4ee2a-fd3d-4b9c-b895-2a1b55dd8cd3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE