./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound20.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_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/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_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/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_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/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 28cfabe4b70eff8f7baaccb87c67f08c79dbf056ceeb2a0d56109f4b60f10f62 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:46:58,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:46:58,190 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:46:58,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:46:58,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:46:58,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:46:58,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:46:58,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:46:58,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:46:58,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:46:58,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:46:58,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:46:58,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:46:58,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:46:58,230 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:46:58,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:46:58,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:46:58,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:46:58,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:46:58,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:46:58,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:46:58,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:46:58,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:46:58,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:46:58,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:46:58,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:46:58,233 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:46:58,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:46:58,233 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:46:58,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:46:58,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:46:58,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:46:58,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:46:58,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:46:58,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:46:58,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:46:58,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:46:58,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:46:58,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:46:58,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:46:58,235 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:46:58,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:46:58,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:46:58,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:46:58,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:46:58,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:46:58,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:46:58,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:46:58,236 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_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/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 -> 28cfabe4b70eff8f7baaccb87c67f08c79dbf056ceeb2a0d56109f4b60f10f62 [2024-11-28 02:46:58,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:46:58,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:46:58,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:46:58,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:46:58,608 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:46:58,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound20.c [2024-11-28 02:47:02,349 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/data/f2e1dbe27/7c9d42c9fb7b4b1a9a02fa82e64ea538/FLAGc0138eb08 [2024-11-28 02:47:02,663 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:47:02,665 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound20.c [2024-11-28 02:47:02,681 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/data/f2e1dbe27/7c9d42c9fb7b4b1a9a02fa82e64ea538/FLAGc0138eb08 [2024-11-28 02:47:02,942 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/data/f2e1dbe27/7c9d42c9fb7b4b1a9a02fa82e64ea538 [2024-11-28 02:47:02,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:47:02,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:47:02,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:47:02,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:47:02,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:47:02,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:47:02" (1/1) ... [2024-11-28 02:47:02,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76450142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:02, skipping insertion in model container [2024-11-28 02:47:02,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:47:02" (1/1) ... [2024-11-28 02:47:02,993 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:47:03,220 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_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound20.c[537,550] [2024-11-28 02:47:03,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:47:03,270 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:47:03,287 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_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound20.c[537,550] [2024-11-28 02:47:03,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:47:03,321 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:47:03,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03 WrapperNode [2024-11-28 02:47:03,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:47:03,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:47:03,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:47:03,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:47:03,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,372 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-28 02:47:03,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:47:03,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:47:03,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:47:03,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:47:03,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,410 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 02:47:03,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,416 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:47:03,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:47:03,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:47:03,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:47:03,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (1/1) ... [2024-11-28 02:47:03,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:03,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:03,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:47:03,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:47:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:47:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:47:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:47:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:47:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:47:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:47:03,627 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:47:03,630 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:47:03,924 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-28 02:47:03,924 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:47:03,941 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:47:03,943 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:47:03,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:47:03 BoogieIcfgContainer [2024-11-28 02:47:03,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:47:03,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:47:03,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:47:03,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:47:03,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:47:02" (1/3) ... [2024-11-28 02:47:03,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab5d25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:47:03, skipping insertion in model container [2024-11-28 02:47:03,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:03" (2/3) ... [2024-11-28 02:47:03,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab5d25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:47:03, skipping insertion in model container [2024-11-28 02:47:03,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:47:03" (3/3) ... [2024-11-28 02:47:03,968 INFO L128 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound20.c [2024-11-28 02:47:03,989 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:47:03,991 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hard-u_unwindbound20.c that has 2 procedures, 28 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 02:47:04,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:47:04,093 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;@6c9721b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:47:04,094 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:47:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 02:47:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 02:47:04,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:04,109 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:04,109 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:04,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash -712527539, now seen corresponding path program 1 times [2024-11-28 02:47:04,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:04,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989514478] [2024-11-28 02:47:04,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:04,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:04,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:04,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989514478] [2024-11-28 02:47:04,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989514478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:04,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:04,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:47:04,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918231913] [2024-11-28 02:47:04,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:04,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:47:04,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:04,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:47:04,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:47:04,362 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:47:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:04,395 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2024-11-28 02:47:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:47:04,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 02:47:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:04,410 INFO L225 Difference]: With dead ends: 53 [2024-11-28 02:47:04,410 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 02:47:04,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 02:47:04,424 INFO L435 NwaCegarLoop]: 38 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, 38 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 02:47:04,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 02:47:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-28 02:47:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:47:04,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2024-11-28 02:47:04,480 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2024-11-28 02:47:04,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:04,480 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2024-11-28 02:47:04,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:47:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2024-11-28 02:47:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 02:47:04,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:04,482 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:04,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:47:04,482 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:04,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:04,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2015332289, now seen corresponding path program 1 times [2024-11-28 02:47:04,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:04,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132855943] [2024-11-28 02:47:04,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:04,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:04,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:04,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132855943] [2024-11-28 02:47:04,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132855943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:04,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:04,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:47:04,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874970147] [2024-11-28 02:47:04,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:04,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:47:04,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:04,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:47:04,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:47:04,888 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:47:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:05,059 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-11-28 02:47:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:47:05,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 02:47:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:05,063 INFO L225 Difference]: With dead ends: 38 [2024-11-28 02:47:05,063 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 02:47:05,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 02:47:05,065 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:05,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 104 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:47:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 02:47:05,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2024-11-28 02:47:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:47:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-11-28 02:47:05,081 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2024-11-28 02:47:05,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:05,082 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-11-28 02:47:05,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:47:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-28 02:47:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:47:05,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:05,084 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:05,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:47:05,085 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:05,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash 902164894, now seen corresponding path program 1 times [2024-11-28 02:47:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972944168] [2024-11-28 02:47:05,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:05,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:05,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:05,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972944168] [2024-11-28 02:47:05,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972944168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:05,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:05,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:47:05,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825266719] [2024-11-28 02:47:05,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:05,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:47:05,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:05,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:47:05,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:05,167 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:47:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:05,205 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2024-11-28 02:47:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:47:05,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-28 02:47:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:05,211 INFO L225 Difference]: With dead ends: 44 [2024-11-28 02:47:05,211 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 02:47:05,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 02:47:05,212 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:05,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 02:47:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-28 02:47:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:47:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2024-11-28 02:47:05,231 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 12 [2024-11-28 02:47:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:05,231 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2024-11-28 02:47:05,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:47:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-28 02:47:05,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 02:47:05,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:05,232 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:05,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:47:05,232 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:05,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:05,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1435955584, now seen corresponding path program 1 times [2024-11-28 02:47:05,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:05,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366434793] [2024-11-28 02:47:05,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:05,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:05,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:05,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366434793] [2024-11-28 02:47:05,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366434793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:05,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:05,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:47:05,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366699368] [2024-11-28 02:47:05,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:05,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:47:05,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:05,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:47:05,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:47:05,576 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:47:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:05,726 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-11-28 02:47:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:47:05,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-28 02:47:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:05,728 INFO L225 Difference]: With dead ends: 44 [2024-11-28 02:47:05,728 INFO L226 Difference]: Without dead ends: 42 [2024-11-28 02:47:05,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:47:05,729 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:05,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 101 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:47:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-28 02:47:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2024-11-28 02:47:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:47:05,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-28 02:47:05,753 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 15 [2024-11-28 02:47:05,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:05,753 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-28 02:47:05,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:47:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-28 02:47:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 02:47:05,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:05,754 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:05,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:47:05,755 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:05,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:05,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1121341599, now seen corresponding path program 1 times [2024-11-28 02:47:05,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:05,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121390560] [2024-11-28 02:47:05,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:05,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:47:05,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666718561] [2024-11-28 02:47:05,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:05,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:05,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:05,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:05,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:47:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:05,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:47:05,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:47:06,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:47:06,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:06,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121390560] [2024-11-28 02:47:06,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:47:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666718561] [2024-11-28 02:47:06,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666718561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:06,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:06,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:47:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050659351] [2024-11-28 02:47:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:06,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:47:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:06,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:47:06,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:47:06,270 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 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 02:47:06,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:06,568 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2024-11-28 02:47:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:47:06,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 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 20 [2024-11-28 02:47:06,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:06,570 INFO L225 Difference]: With dead ends: 63 [2024-11-28 02:47:06,570 INFO L226 Difference]: Without dead ends: 48 [2024-11-28 02:47:06,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:47:06,572 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:06,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 129 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:47:06,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-28 02:47:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-28 02:47:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 02:47:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2024-11-28 02:47:06,617 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 20 [2024-11-28 02:47:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:06,617 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2024-11-28 02:47:06,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 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 02:47:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2024-11-28 02:47:06,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 02:47:06,618 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:06,619 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:06,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:06,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:06,823 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:06,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1012149342, now seen corresponding path program 1 times [2024-11-28 02:47:06,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:06,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782393195] [2024-11-28 02:47:06,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:06,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:47:06,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225762608] [2024-11-28 02:47:06,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:06,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:06,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:06,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:06,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:47:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:06,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:47:06,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:47:07,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:08,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:08,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782393195] [2024-11-28 02:47:08,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:47:08,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225762608] [2024-11-28 02:47:08,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225762608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:08,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:47:08,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 02:47:08,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390873567] [2024-11-28 02:47:08,063 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:08,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:47:08,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:08,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:47:08,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:47:08,064 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:47:08,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:08,629 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2024-11-28 02:47:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:47:08,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-28 02:47:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:08,632 INFO L225 Difference]: With dead ends: 64 [2024-11-28 02:47:08,632 INFO L226 Difference]: Without dead ends: 50 [2024-11-28 02:47:08,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:47:08,634 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:08,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 157 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:47:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-28 02:47:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-28 02:47:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 02:47:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2024-11-28 02:47:08,649 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 28 [2024-11-28 02:47:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:08,649 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2024-11-28 02:47:08,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:47:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2024-11-28 02:47:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:47:08,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:08,651 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:08,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:08,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:08,856 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:08,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:08,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2060763589, now seen corresponding path program 1 times [2024-11-28 02:47:08,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:08,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719142360] [2024-11-28 02:47:08,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:08,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:47:08,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:08,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719142360] [2024-11-28 02:47:08,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719142360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:08,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49839184] [2024-11-28 02:47:08,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:08,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:08,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:08,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:08,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:47:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:09,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:47:09,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:47:09,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:47:09,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49839184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:47:09,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:47:09,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-28 02:47:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172570936] [2024-11-28 02:47:09,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:09,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:47:09,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:09,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:47:09,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:47:09,190 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:47:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:09,434 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2024-11-28 02:47:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:47:09,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 30 [2024-11-28 02:47:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:09,437 INFO L225 Difference]: With dead ends: 115 [2024-11-28 02:47:09,437 INFO L226 Difference]: Without dead ends: 101 [2024-11-28 02:47:09,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 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 02:47:09,439 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 36 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:09,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 141 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:47:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-28 02:47:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2024-11-28 02:47:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 64 states have internal predecessors, (74), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-28 02:47:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2024-11-28 02:47:09,467 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 30 [2024-11-28 02:47:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:09,468 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2024-11-28 02:47:09,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:47:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2024-11-28 02:47:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 02:47:09,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:09,469 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:09,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:47:09,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:09,674 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:09,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:09,675 INFO L85 PathProgramCache]: Analyzing trace with hash -897447482, now seen corresponding path program 1 times [2024-11-28 02:47:09,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:09,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246704160] [2024-11-28 02:47:09,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:09,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:47:09,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780887388] [2024-11-28 02:47:09,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:09,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:09,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:09,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:09,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:47:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:09,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:47:09,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 02:47:10,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 02:47:10,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:10,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246704160] [2024-11-28 02:47:10,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:47:10,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780887388] [2024-11-28 02:47:10,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780887388] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:10,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:47:10,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-28 02:47:10,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037700905] [2024-11-28 02:47:10,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:10,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:10,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:10,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:10,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:47:10,426 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:47:11,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:11,020 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2024-11-28 02:47:11,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:47:11,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-28 02:47:11,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:11,023 INFO L225 Difference]: With dead ends: 114 [2024-11-28 02:47:11,023 INFO L226 Difference]: Without dead ends: 112 [2024-11-28 02:47:11,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:47:11,024 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:11,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 96 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:47:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-28 02:47:11,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2024-11-28 02:47:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 73 states have internal predecessors, (82), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:47:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2024-11-28 02:47:11,052 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 38 [2024-11-28 02:47:11,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:11,052 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2024-11-28 02:47:11,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:47:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2024-11-28 02:47:11,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 02:47:11,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:11,053 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:11,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:11,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:47:11,254 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:11,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash -207368571, now seen corresponding path program 1 times [2024-11-28 02:47:11,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:11,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503918045] [2024-11-28 02:47:11,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:11,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:47:11,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617087732] [2024-11-28 02:47:11,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:11,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:11,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:11,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:11,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:47:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:11,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:47:11,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:47:12,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:47:26,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503918045] [2024-11-28 02:47:26,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:47:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617087732] [2024-11-28 02:47:26,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617087732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:47:26,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:47:26,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2024-11-28 02:47:26,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339649779] [2024-11-28 02:47:26,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:26,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:47:26,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:26,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:47:26,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=233, Unknown=3, NotChecked=0, Total=306 [2024-11-28 02:47:26,794 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-28 02:47:30,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:47:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:31,517 INFO L93 Difference]: Finished difference Result 138 states and 169 transitions. [2024-11-28 02:47:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:47:31,518 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 46 [2024-11-28 02:47:31,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:31,521 INFO L225 Difference]: With dead ends: 138 [2024-11-28 02:47:31,521 INFO L226 Difference]: Without dead ends: 134 [2024-11-28 02:47:31,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=100, Invalid=317, Unknown=3, NotChecked=0, Total=420 [2024-11-28 02:47:31,523 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 42 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:31,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 195 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 168 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 02:47:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-28 02:47:31,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 123. [2024-11-28 02:47:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 85 states have internal predecessors, (96), 26 states have call successors, (26), 16 states have call predecessors, (26), 15 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 02:47:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 146 transitions. [2024-11-28 02:47:31,581 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 146 transitions. Word has length 46 [2024-11-28 02:47:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:31,581 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 146 transitions. [2024-11-28 02:47:31,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-28 02:47:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 146 transitions. [2024-11-28 02:47:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 02:47:31,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:31,586 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:31,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:31,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:31,787 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:31,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1829451524, now seen corresponding path program 1 times [2024-11-28 02:47:31,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:31,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432398817] [2024-11-28 02:47:31,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:31,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 02:47:32,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:32,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432398817] [2024-11-28 02:47:32,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432398817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:32,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690335172] [2024-11-28 02:47:32,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:32,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:32,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:32,015 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:32,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:47:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:32,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:47:32,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 36 proven. 42 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:47:32,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 02:47:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690335172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:47:32,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:47:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2024-11-28 02:47:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996962144] [2024-11-28 02:47:32,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:32,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:47:32,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:32,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:47:32,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:47:32,448 INFO L87 Difference]: Start difference. First operand 123 states and 146 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-28 02:47:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:32,943 INFO L93 Difference]: Finished difference Result 251 states and 309 transitions. [2024-11-28 02:47:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:47:32,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 51 [2024-11-28 02:47:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:32,947 INFO L225 Difference]: With dead ends: 251 [2024-11-28 02:47:32,947 INFO L226 Difference]: Without dead ends: 230 [2024-11-28 02:47:32,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:47:32,952 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 85 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:32,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 185 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:47:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-28 02:47:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 223. [2024-11-28 02:47:33,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 146 states have (on average 1.1917808219178083) internal successors, (174), 157 states have internal predecessors, (174), 51 states have call successors, (51), 26 states have call predecessors, (51), 25 states have return successors, (47), 39 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-28 02:47:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 272 transitions. [2024-11-28 02:47:33,047 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 272 transitions. Word has length 51 [2024-11-28 02:47:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:33,049 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 272 transitions. [2024-11-28 02:47:33,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-28 02:47:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 272 transitions. [2024-11-28 02:47:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 02:47:33,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:33,055 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 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 02:47:33,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:33,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:33,256 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:33,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1713257457, now seen corresponding path program 1 times [2024-11-28 02:47:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404423445] [2024-11-28 02:47:33,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:47:33,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780164649] [2024-11-28 02:47:33,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:33,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:33,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:33,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:33,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:47:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:34,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 02:47:34,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 40 proven. 30 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-28 02:47:35,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:48:39,784 WARN L286 SmtUtils]: Spent 6.32s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:48:52,369 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~d~0#1| 2147483648)) (.cse3 (* |c_ULTIMATE.start_main_~B~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse4 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~d~0#1| 4294967296))) (or (not (= .cse0 (mod (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~B~0#1|) 4294967296))) (< (* 2 .cse1) (+ .cse2 1)) (not (= (mod (+ .cse3 |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse4)) (not (= .cse4 .cse2)) (= (mod (+ (* (mod |c_ULTIMATE.start_main_~p~0#1| 2147483648) |c_ULTIMATE.start_main_~B~0#1|) (* 4294967295 .cse1) .cse3 |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse4) (< .cse2 .cse0))) is different from true [2024-11-28 02:49:02,398 WARN L286 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:49:12,204 WARN L286 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:49:26,087 WARN L286 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:49:41,177 WARN L286 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:49:54,568 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:50:01,244 WARN L286 SmtUtils]: Spent 6.68s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:50:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 40 proven. 25 refuted. 0 times theorem prover too weak. 67 trivial. 5 not checked. [2024-11-28 02:50:08,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404423445] [2024-11-28 02:50:08,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:50:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780164649] [2024-11-28 02:50:08,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780164649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:08,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:50:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2024-11-28 02:50:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603441860] [2024-11-28 02:50:08,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:08,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:50:08,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:08,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:50:08,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=336, Unknown=13, NotChecked=38, Total=462 [2024-11-28 02:50:08,556 INFO L87 Difference]: Start difference. First operand 223 states and 272 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 02:50:13,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:50:17,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:50:19,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:50:23,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:50:40,007 WARN L286 SmtUtils]: Spent 12.12s on a formula simplification. DAG size of input: 45 DAG size of output: 32 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:50:59,488 WARN L286 SmtUtils]: Spent 15.44s on a formula simplification. DAG size of input: 46 DAG size of output: 32 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:51:01,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:05,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:06,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:09,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:23,711 WARN L286 SmtUtils]: Spent 8.97s on a formula simplification. DAG size of input: 41 DAG size of output: 31 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:51:27,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:31,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:35,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:39,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:44,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:46,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:54,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:51:58,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:52:02,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:52:04,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:52:21,414 WARN L286 SmtUtils]: Spent 12.36s on a formula simplification. DAG size of input: 46 DAG size of output: 45 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:52:25,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:52:44,760 WARN L286 SmtUtils]: Spent 14.82s on a formula simplification. DAG size of input: 42 DAG size of output: 41 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:52:47,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:52:51,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:52:55,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:52:59,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:53:12,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:53:16,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:53:18,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:53:23,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:53:24,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:53:28,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:53:49,765 WARN L286 SmtUtils]: Spent 17.23s on a formula simplification. DAG size of input: 54 DAG size of output: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:53:54,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:53:58,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:02,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:06,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:10,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:15,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:19,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:20,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:23,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:27,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:31,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:34,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:43,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:47,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:53,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:54:57,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:55:13,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:55:19,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:55:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:21,887 INFO L93 Difference]: Finished difference Result 369 states and 467 transitions. [2024-11-28 02:55:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:55:21,889 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 60 [2024-11-28 02:55:21,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:21,892 INFO L225 Difference]: With dead ends: 369 [2024-11-28 02:55:21,892 INFO L226 Difference]: Without dead ends: 288 [2024-11-28 02:55:21,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 195.4s TimeCoverageRelationStatistics Valid=276, Invalid=1039, Unknown=21, NotChecked=70, Total=1406 [2024-11-28 02:55:21,894 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 81 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 92 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 173.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 174.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:21,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 319 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 331 Invalid, 33 Unknown, 130 Unchecked, 174.0s Time] [2024-11-28 02:55:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-28 02:55:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 242. [2024-11-28 02:55:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 162 states have (on average 1.1604938271604939) internal successors, (188), 173 states have internal predecessors, (188), 48 states have call successors, (48), 31 states have call predecessors, (48), 31 states have return successors, (45), 37 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 02:55:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 281 transitions. [2024-11-28 02:55:21,979 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 281 transitions. Word has length 60 [2024-11-28 02:55:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:21,979 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 281 transitions. [2024-11-28 02:55:21,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-28 02:55:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 281 transitions. [2024-11-28 02:55:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 02:55:21,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:21,981 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:55:21,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:55:22,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:22,181 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:22,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:22,182 INFO L85 PathProgramCache]: Analyzing trace with hash 264629232, now seen corresponding path program 2 times [2024-11-28 02:55:22,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:22,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973695241] [2024-11-28 02:55:22,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:22,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:22,256 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:22,257 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 02:55:22,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959709012] [2024-11-28 02:55:22,259 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:55:22,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:22,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:22,267 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:22,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bafcb5-2ed6-451b-bbfa-48d8b084481c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:55:22,404 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:55:22,404 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:22,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 02:55:22,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 23 proven. 29 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-28 02:55:23,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:55:43,107 WARN L286 SmtUtils]: Spent 9.44s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:56:11,925 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:56:32,656 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:56:53,690 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:57:14,060 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:57:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 23 proven. 29 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-28 02:57:14,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:14,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973695241] [2024-11-28 02:57:14,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:57:14,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959709012] [2024-11-28 02:57:14,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959709012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:57:14,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:57:14,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-11-28 02:57:14,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680022781] [2024-11-28 02:57:14,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:57:14,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:57:14,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:14,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:57:14,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=335, Unknown=2, NotChecked=0, Total=420 [2024-11-28 02:57:14,157 INFO L87 Difference]: Start difference. First operand 242 states and 281 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 8 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-28 02:57:18,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:57:22,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:57:26,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:57:29,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:57:33,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:58:51,967 WARN L286 SmtUtils]: Spent 1.27m on a formula simplification that was a NOOP. DAG size: 36 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:59:33,654 WARN L286 SmtUtils]: Spent 41.45s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:59:35,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:21,929 WARN L286 SmtUtils]: Spent 42.38s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:00:26,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:28,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:32,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:36,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:40,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:41,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:45,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:49,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:51,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:00:57,711 WARN L286 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:01:02,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:06,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:20,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:24,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:28,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:33,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:37,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:41,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:45,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:49,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:01:59,261 WARN L286 SmtUtils]: Spent 9.24s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:02:03,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:02:07,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:02:11,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:02:15,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:02:17,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:02:21,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []