./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB --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 58e0ac80b52681cc0cdead13de3f6425618df79dffe8d2a1da55e71c89383d0a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:27:16,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:27:16,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:27:16,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:27:16,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:27:16,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:27:16,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:27:16,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:27:16,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:27:16,289 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:27:16,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:27:16,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:27:16,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:27:16,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:27:16,291 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:27:16,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:27:16,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:27:16,294 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:27:16,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:27:16,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:27:16,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:27:16,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:27:16,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:27:16,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:27:16,295 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:27:16,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:27:16,295 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:27:16,295 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:27:16,295 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:27:16,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:27:16,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:27:16,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:27:16,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:27:16,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:27:16,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:27:16,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:27:16,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:27:16,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:27:16,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:27:16,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:27:16,296 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:27:16,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:27:16,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:27:16,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:27:16,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:27:16,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:27:16,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:27:16,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:27:16,297 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_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 58e0ac80b52681cc0cdead13de3f6425618df79dffe8d2a1da55e71c89383d0a [2024-11-28 03:27:16,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:27:16,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:27:16,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:27:16,661 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:27:16,661 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:27:16,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2024-11-28 03:27:19,950 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/data/154ae6714/9f5308bfb657432e98f46bb28ac42837/FLAGfba855c17 [2024-11-28 03:27:20,272 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:27:20,273 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2024-11-28 03:27:20,284 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/data/154ae6714/9f5308bfb657432e98f46bb28ac42837/FLAGfba855c17 [2024-11-28 03:27:20,305 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/data/154ae6714/9f5308bfb657432e98f46bb28ac42837 [2024-11-28 03:27:20,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:27:20,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:27:20,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:27:20,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:27:20,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:27:20,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee7f4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20, skipping insertion in model container [2024-11-28 03:27:20,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:27:20,498 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_3533d0a9-9477-434a-abe3-1d8836c1262e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2024-11-28 03:27:20,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:27:20,528 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:27:20,543 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_3533d0a9-9477-434a-abe3-1d8836c1262e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2024-11-28 03:27:20,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:27:20,568 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:27:20,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20 WrapperNode [2024-11-28 03:27:20,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:27:20,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:27:20,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:27:20,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:27:20,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,601 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2024-11-28 03:27:20,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:27:20,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:27:20,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:27:20,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:27:20,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,624 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]. [2024-11-28 03:27:20,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,628 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:27:20,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:27:20,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:27:20,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:27:20,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (1/1) ... [2024-11-28 03:27:20,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:27:20,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:20,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:27:20,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:27:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:27:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:27:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:27:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:27:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:27:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:27:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:27:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:27:20,813 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:27:20,816 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:27:20,983 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-28 03:27:20,983 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:27:20,999 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:27:21,000 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:27:21,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:27:21 BoogieIcfgContainer [2024-11-28 03:27:21,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:27:21,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:27:21,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:27:21,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:27:21,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:27:20" (1/3) ... [2024-11-28 03:27:21,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557b9f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:27:21, skipping insertion in model container [2024-11-28 03:27:21,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:27:20" (2/3) ... [2024-11-28 03:27:21,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557b9f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:27:21, skipping insertion in model container [2024-11-28 03:27:21,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:27:21" (3/3) ... [2024-11-28 03:27:21,014 INFO L128 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2024-11-28 03:27:21,035 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:27:21,037 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mannadiv_unwindbound10.c that has 3 procedures, 25 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:27:21,106 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:27:21,122 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;@56b69ae2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:27:21,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:27:21,127 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) [2024-11-28 03:27:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:27:21,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:21,137 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:21,137 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:21,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times [2024-11-28 03:27:21,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602721262] [2024-11-28 03:27:21,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:21,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:27:21,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:21,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602721262] [2024-11-28 03:27:21,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602721262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:21,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804105546] [2024-11-28 03:27:21,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:21,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:21,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:21,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:21,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:27:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:21,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:27:21,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:27:21,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:21,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804105546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:21,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:27:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:27:21,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948293187] [2024-11-28 03:27:21,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:21,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:27:21,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:21,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:27:21,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:27:21,516 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) [2024-11-28 03:27:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:21,541 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-11-28 03:27:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:27:21,547 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 [2024-11-28 03:27:21,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:21,553 INFO L225 Difference]: With dead ends: 47 [2024-11-28 03:27:21,554 INFO L226 Difference]: Without dead ends: 21 [2024-11-28 03:27:21,556 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 [2024-11-28 03:27:21,560 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 [2024-11-28 03:27:21,561 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] [2024-11-28 03:27:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-28 03:27:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-28 03:27:21,591 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) [2024-11-28 03:27:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-28 03:27:21,596 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2024-11-28 03:27:21,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:21,596 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-28 03:27:21,597 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) [2024-11-28 03:27:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-28 03:27:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:27:21,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:21,598 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:21,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:27:21,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:27:21,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:21,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1316097620, now seen corresponding path program 1 times [2024-11-28 03:27:21,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:21,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166084865] [2024-11-28 03:27:21,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:21,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:27:21,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125558675] [2024-11-28 03:27:21,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:21,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:21,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:21,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:21,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:27:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:21,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:27:21,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:22,097 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:22,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:22,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166084865] [2024-11-28 03:27:22,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:27:22,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125558675] [2024-11-28 03:27:22,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125558675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:22,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:22,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:27:22,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119541756] [2024-11-28 03:27:22,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:22,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:27:22,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:22,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:27:22,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:27:22,103 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) [2024-11-28 03:27:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:22,215 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-11-28 03:27:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:27:22,216 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 [2024-11-28 03:27:22,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:22,218 INFO L225 Difference]: With dead ends: 33 [2024-11-28 03:27:22,220 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 03:27:22,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:22,222 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-28 03:27:22,223 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] [2024-11-28 03:27:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 03:27:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-11-28 03:27:22,234 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) [2024-11-28 03:27:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-28 03:27:22,236 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 19 [2024-11-28 03:27:22,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:22,237 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-28 03:27:22,237 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) [2024-11-28 03:27:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-28 03:27:22,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:27:22,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:22,239 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:22,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:27:22,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 03:27:22,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:22,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1318004244, now seen corresponding path program 1 times [2024-11-28 03:27:22,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:22,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412713310] [2024-11-28 03:27:22,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:22,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412713310] [2024-11-28 03:27:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412713310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:27:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753376661] [2024-11-28 03:27:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:22,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:27:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:22,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:27:22,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:27:22,594 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) [2024-11-28 03:27:22,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:22,625 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-28 03:27:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:27:22,626 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 [2024-11-28 03:27:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:22,629 INFO L225 Difference]: With dead ends: 35 [2024-11-28 03:27:22,629 INFO L226 Difference]: Without dead ends: 28 [2024-11-28 03:27:22,629 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 [2024-11-28 03:27:22,631 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 [2024-11-28 03:27:22,631 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] [2024-11-28 03:27:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-28 03:27:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-28 03:27:22,644 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) [2024-11-28 03:27:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-28 03:27:22,647 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2024-11-28 03:27:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:22,648 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-28 03:27:22,648 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) [2024-11-28 03:27:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-28 03:27:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:27:22,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:22,650 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] [2024-11-28 03:27:22,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:27:22,650 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:22,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1691684484, now seen corresponding path program 1 times [2024-11-28 03:27:22,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:22,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048726179] [2024-11-28 03:27:22,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:22,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:23,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048726179] [2024-11-28 03:27:23,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048726179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:23,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494832245] [2024-11-28 03:27:23,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:23,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:23,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:23,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:23,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:27:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:23,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:27:23,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:23,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:23,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494832245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:23,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:27:23,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 03:27:23,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580986446] [2024-11-28 03:27:23,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:23,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:23,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:23,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:23,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:27:23,447 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) [2024-11-28 03:27:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:23,523 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-28 03:27:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:27:23,524 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 [2024-11-28 03:27:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:23,525 INFO L225 Difference]: With dead ends: 37 [2024-11-28 03:27:23,525 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 03:27:23,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:27:23,527 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 [2024-11-28 03:27:23,527 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] [2024-11-28 03:27:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 03:27:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-28 03:27:23,533 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) [2024-11-28 03:27:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-28 03:27:23,534 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 25 [2024-11-28 03:27:23,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:23,534 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-28 03:27:23,535 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) [2024-11-28 03:27:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-28 03:27:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 03:27:23,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:23,536 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] [2024-11-28 03:27:23,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:27:23,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:23,737 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:23,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:23,737 INFO L85 PathProgramCache]: Analyzing trace with hash -147457855, now seen corresponding path program 1 times [2024-11-28 03:27:23,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:23,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763076955] [2024-11-28 03:27:23,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:23,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:27:23,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474496365] [2024-11-28 03:27:23,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:23,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:23,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:23,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:23,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:27:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:23,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:27:23,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:24,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:24,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:24,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763076955] [2024-11-28 03:27:24,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:27:24,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474496365] [2024-11-28 03:27:24,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474496365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:24,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:27:24,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-28 03:27:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035273016] [2024-11-28 03:27:24,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:24,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:27:24,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:24,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:27:24,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:27:24,124 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) [2024-11-28 03:27:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:24,266 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-28 03:27:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:27:24,266 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 [2024-11-28 03:27:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:24,267 INFO L225 Difference]: With dead ends: 59 [2024-11-28 03:27:24,267 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 03:27:24,268 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 [2024-11-28 03:27:24,269 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 [2024-11-28 03:27:24,269 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] [2024-11-28 03:27:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 03:27:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2024-11-28 03:27:24,278 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) [2024-11-28 03:27:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-11-28 03:27:24,279 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 28 [2024-11-28 03:27:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:24,279 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-11-28 03:27:24,280 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) [2024-11-28 03:27:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-11-28 03:27:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 03:27:24,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:24,281 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] [2024-11-28 03:27:24,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:27:24,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:24,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:24,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash -145551231, now seen corresponding path program 1 times [2024-11-28 03:27:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597323967] [2024-11-28 03:27:24,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:24,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597323967] [2024-11-28 03:27:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597323967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93007032] [2024-11-28 03:27:24,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:24,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:24,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:24,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:27:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:24,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:27:24,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:24,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:24,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93007032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:24,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:24,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-28 03:27:24,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096094181] [2024-11-28 03:27:24,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:24,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:27:24,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:24,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:27:24,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:27:24,886 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) [2024-11-28 03:27:24,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:24,986 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2024-11-28 03:27:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:27:24,986 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 [2024-11-28 03:27:24,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:24,987 INFO L225 Difference]: With dead ends: 72 [2024-11-28 03:27:24,987 INFO L226 Difference]: Without dead ends: 67 [2024-11-28 03:27:24,988 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 [2024-11-28 03:27:24,988 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 [2024-11-28 03:27:24,988 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] [2024-11-28 03:27:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-28 03:27:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2024-11-28 03:27:25,014 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) [2024-11-28 03:27:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-28 03:27:25,017 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 28 [2024-11-28 03:27:25,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:25,017 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-28 03:27:25,018 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) [2024-11-28 03:27:25,018 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-28 03:27:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:27:25,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:25,019 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] [2024-11-28 03:27:25,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:27:25,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:27:25,220 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:25,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:25,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1574868521, now seen corresponding path program 1 times [2024-11-28 03:27:25,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:25,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440255122] [2024-11-28 03:27:25,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:25,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:27:25,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440255122] [2024-11-28 03:27:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440255122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995430462] [2024-11-28 03:27:25,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:25,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:25,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:25,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:25,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:27:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:25,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:27:25,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:27:25,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:27:26,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995430462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:26,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:26,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 15 [2024-11-28 03:27:26,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906140132] [2024-11-28 03:27:26,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:26,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:27:26,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:26,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:27:26,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:27:26,043 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) [2024-11-28 03:27:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:26,258 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2024-11-28 03:27:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:27:26,259 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 [2024-11-28 03:27:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:26,260 INFO L225 Difference]: With dead ends: 66 [2024-11-28 03:27:26,260 INFO L226 Difference]: Without dead ends: 60 [2024-11-28 03:27:26,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:27:26,262 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 [2024-11-28 03:27:26,264 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] [2024-11-28 03:27:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-28 03:27:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2024-11-28 03:27:26,293 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) [2024-11-28 03:27:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2024-11-28 03:27:26,294 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 34 [2024-11-28 03:27:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:26,294 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2024-11-28 03:27:26,295 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) [2024-11-28 03:27:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2024-11-28 03:27:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:27:26,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:26,296 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] [2024-11-28 03:27:26,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:27:26,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:26,502 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:26,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:26,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1700883628, now seen corresponding path program 2 times [2024-11-28 03:27:26,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:26,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768668365] [2024-11-28 03:27:26,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:27:26,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:26,524 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:27:26,524 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:27:26,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:26,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768668365] [2024-11-28 03:27:26,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768668365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:26,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016700763] [2024-11-28 03:27:26,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:27:26,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:26,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:26,821 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:26,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:27:26,912 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:27:26,913 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:26,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:27:26,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:27:27,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:27:27,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016700763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:27,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:27,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 15 [2024-11-28 03:27:27,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477159988] [2024-11-28 03:27:27,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:27,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:27:27,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:27,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:27:27,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:27:27,273 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) [2024-11-28 03:27:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:27,594 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2024-11-28 03:27:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:27:27,595 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 [2024-11-28 03:27:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:27,596 INFO L225 Difference]: With dead ends: 116 [2024-11-28 03:27:27,596 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 03:27:27,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:27:27,598 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 [2024-11-28 03:27:27,598 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] [2024-11-28 03:27:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 03:27:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-28 03:27:27,622 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) [2024-11-28 03:27:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2024-11-28 03:27:27,623 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 55 [2024-11-28 03:27:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:27,624 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2024-11-28 03:27:27,624 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) [2024-11-28 03:27:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2024-11-28 03:27:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 03:27:27,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:27,628 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] [2024-11-28 03:27:27,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:27:27,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:27,832 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:27,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash 592653108, now seen corresponding path program 3 times [2024-11-28 03:27:27,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:27,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460520889] [2024-11-28 03:27:27,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:27:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:27,946 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 03:27:27,947 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 03:27:27,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853487718] [2024-11-28 03:27:27,949 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:27:27,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:27,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:27,953 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:27,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:27:28,086 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 03:27:28,086 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-28 03:27:28,086 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:27:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:27:28,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:27:28,190 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:27:28,192 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 03:27:28,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:27:28,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:28,401 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:28,464 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:27:28,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:27:28 BoogieIcfgContainer [2024-11-28 03:27:28,471 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:27:28,473 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:27:28,473 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:27:28,473 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:27:28,474 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:27:21" (3/4) ... [2024-11-28 03:27:28,475 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 03:27:28,567 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 70. [2024-11-28 03:27:28,682 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:27:28,690 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:27:28,690 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:27:28,691 INFO L158 Benchmark]: Toolchain (without parser) took 8382.43ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 71.2MB in the end (delta: 46.3MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2024-11-28 03:27:28,691 INFO L158 Benchmark]: CDTParser took 1.99ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:27:28,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.00ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 106.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:27:28,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.31ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 105.3MB in the end (delta: 937.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:27:28,692 INFO L158 Benchmark]: Boogie Preprocessor took 34.13ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 104.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:27:28,692 INFO L158 Benchmark]: RCFGBuilder took 363.64ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 93.8MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:27:28,692 INFO L158 Benchmark]: TraceAbstraction took 7466.90ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 80.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-11-28 03:27:28,692 INFO L158 Benchmark]: Witness Printer took 217.16ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 71.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:27:28,698 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.99ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.00ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 106.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.31ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 105.3MB in the end (delta: 937.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.13ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 104.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 363.64ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 93.8MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7466.90ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 80.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Witness Printer took 217.16ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 71.2MB in the end (delta: 9.6MB). 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=11, 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=11, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] EXPR counter++ VAL [counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=0, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] EXPR counter++ VAL [counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=1, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] EXPR counter++ VAL [counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=2, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] EXPR counter++ VAL [counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=3, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] EXPR counter++ VAL [counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=4, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] EXPR counter++ VAL [counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=5, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] EXPR counter++ VAL [counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=6, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] EXPR counter++ VAL [counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=7, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] EXPR counter++ VAL [counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=8, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] EXPR counter++ VAL [counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] COND TRUE counter++<10 [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=11, x2=1, y1=9, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] EXPR counter++ VAL [counter=11, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] COND FALSE !(counter++<10) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, counter=11] [L16] COND TRUE !(cond) VAL [\old(cond)=0, counter=11] [L18] reach_error() VAL [\old(cond)=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 9, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 115 mSDsluCounter, 739 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 563 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 319 IncrementalHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 176 mSDtfsCounter, 319 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 396 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=8, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 651 NumberOfCodeBlocks, 651 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 514 ConstructedInterpolants, 0 QuantifiedInterpolants, 1317 SizeOfPredicates, 10 NumberOfNonLiveVariables, 634 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 180/340 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! [2024-11-28 03:27:28,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3533d0a9-9477-434a-abe3-1d8836c1262e/bin/uautomizer-verify-aQ6SnzHsRB/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