./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd --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 e51b21c2da790a7136d7ad701fd2bec1367e3ae6dd3a60c613fa7cfa4db22905 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:51:58,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:51:58,393 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:51:58,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:51:58,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:51:58,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:51:58,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:51:58,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:51:58,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:51:58,460 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:51:58,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:51:58,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:51:58,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:51:58,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:51:58,463 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:51:58,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:51:58,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:51:58,463 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:51:58,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:51:58,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:51:58,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:51:58,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:51:58,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:51:58,464 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:51:58,464 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:51:58,464 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:51:58,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:51:58,464 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:51:58,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:51:58,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:51:58,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:51:58,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:51:58,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:51:58,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:51:58,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:51:58,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:51:58,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:51:58,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:51:58,468 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:51:58,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:51:58,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:51:58,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:51:58,468 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_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd 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 -> e51b21c2da790a7136d7ad701fd2bec1367e3ae6dd3a60c613fa7cfa4db22905 [2024-11-13 15:51:58,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:51:58,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:51:58,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:51:58,853 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:51:58,853 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:51:58,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c Unable to find full path for "g++" [2024-11-13 15:52:01,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:52:01,544 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:52:01,545 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c [2024-11-13 15:52:01,556 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/data/2eaeb20af/046822f84cd34c67b1a0c5642ddfcf2a/FLAG810bd92f7 [2024-11-13 15:52:01,583 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/data/2eaeb20af/046822f84cd34c67b1a0c5642ddfcf2a [2024-11-13 15:52:01,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:52:01,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:52:01,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:52:01,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:52:01,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:52:01,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:01,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fd1744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01, skipping insertion in model container [2024-11-13 15:52:01,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:01,613 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:52:01,835 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_f563e723-f080-4d50-9ddb-a1b2cfd38d09/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c[458,471] [2024-11-13 15:52:01,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:52:01,879 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:52:01,892 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_f563e723-f080-4d50-9ddb-a1b2cfd38d09/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c[458,471] [2024-11-13 15:52:01,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:52:01,930 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:52:01,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01 WrapperNode [2024-11-13 15:52:01,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:52:01,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:52:01,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:52:01,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:52:01,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:01,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:01,973 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2024-11-13 15:52:01,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:52:01,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:52:01,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:52:01,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:52:01,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:01,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:01,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:01,996 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]. [2024-11-13 15:52:01,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:01,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:01,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:02,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:02,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:02,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:02,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:52:02,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:52:02,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:52:02,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:52:02,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (1/1) ... [2024-11-13 15:52:02,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:52:02,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:02,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:52:02,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:52:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:52:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:52:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:52:02,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:52:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 15:52:02,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 15:52:02,188 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:52:02,191 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:52:02,341 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-13 15:52:02,341 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:52:02,357 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:52:02,357 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:52:02,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:52:02 BoogieIcfgContainer [2024-11-13 15:52:02,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:52:02,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:52:02,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:52:02,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:52:02,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:52:01" (1/3) ... [2024-11-13 15:52:02,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dab35f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:52:02, skipping insertion in model container [2024-11-13 15:52:02,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:01" (2/3) ... [2024-11-13 15:52:02,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dab35f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:52:02, skipping insertion in model container [2024-11-13 15:52:02,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:52:02" (3/3) ... [2024-11-13 15:52:02,372 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound20.c [2024-11-13 15:52:02,388 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:52:02,390 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG ps5-ll_unwindbound20.c that has 2 procedures, 20 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 15:52:02,446 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:52:02,459 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;@5db4f31e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:52:02,459 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:52:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:52:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:52:02,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:02,471 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:02,471 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:02,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:02,476 INFO L85 PathProgramCache]: Analyzing trace with hash -580201080, now seen corresponding path program 1 times [2024-11-13 15:52:02,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:52:02,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277543644] [2024-11-13 15:52:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:02,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:52:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:02,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:52:02,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277543644] [2024-11-13 15:52:02,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277543644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:52:02,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:52:02,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:52:02,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763831202] [2024-11-13 15:52:02,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:52:02,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 15:52:02,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:52:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 15:52:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:52:02,666 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-13 15:52:02,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:02,683 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2024-11-13 15:52:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 15:52:02,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2024-11-13 15:52:02,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:02,695 INFO L225 Difference]: With dead ends: 37 [2024-11-13 15:52:02,695 INFO L226 Difference]: Without dead ends: 16 [2024-11-13 15:52:02,699 INFO L431 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 [2024-11-13 15:52:02,706 INFO L432 NwaCegarLoop]: 23 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, 23 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 [2024-11-13 15:52:02,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:52:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-13 15:52:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-13 15:52:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:52:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-13 15:52:02,750 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2024-11-13 15:52:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:02,751 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-13 15:52:02,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-13 15:52:02,752 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-13 15:52:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:52:02,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:02,753 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:02,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:52:02,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:02,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2016134659, now seen corresponding path program 1 times [2024-11-13 15:52:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:52:02,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159107792] [2024-11-13 15:52:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:02,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:52:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:02,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:52:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159107792] [2024-11-13 15:52:02,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159107792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:52:02,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:52:02,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:52:02,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241366508] [2024-11-13 15:52:02,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:52:02,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:52:02,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:52:02,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:52:02,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:52:02,938 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2024-11-13 15:52:02,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:02,981 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-13 15:52:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:52:02,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 [2024-11-13 15:52:02,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:02,982 INFO L225 Difference]: With dead ends: 26 [2024-11-13 15:52:02,983 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 15:52:02,983 INFO L431 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 [2024-11-13 15:52:02,984 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:02,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:52:02,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 15:52:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-13 15:52:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:52:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-13 15:52:02,990 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2024-11-13 15:52:02,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:02,990 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-13 15:52:02,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2024-11-13 15:52:02,990 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-13 15:52:02,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:52:02,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:02,991 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:02,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:52:02,991 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:02,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2014347199, now seen corresponding path program 1 times [2024-11-13 15:52:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:52:02,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174626158] [2024-11-13 15:52:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:02,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:52:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:52:03,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582130446] [2024-11-13 15:52:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:03,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:03,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:03,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:03,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:52:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:03,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:52:03,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:03,279 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:52:03,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:52:03,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174626158] [2024-11-13 15:52:03,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:52:03,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582130446] [2024-11-13 15:52:03,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582130446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:52:03,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:52:03,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:52:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821351026] [2024-11-13 15:52:03,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:52:03,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:52:03,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:52:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:52:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:52:03,284 INFO L87 Difference]: Start difference. First operand 18 states and 21 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) [2024-11-13 15:52:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:03,372 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-13 15:52:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:52:03,373 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 [2024-11-13 15:52:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:03,374 INFO L225 Difference]: With dead ends: 28 [2024-11-13 15:52:03,374 INFO L226 Difference]: Without dead ends: 24 [2024-11-13 15:52:03,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:52:03,376 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:03,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:52:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-13 15:52:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-13 15:52:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:52:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-13 15:52:03,384 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2024-11-13 15:52:03,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:03,384 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-13 15:52:03,384 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) [2024-11-13 15:52:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-13 15:52:03,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 15:52:03,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:03,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:03,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:52:03,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:03,590 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:03,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1741096931, now seen corresponding path program 1 times [2024-11-13 15:52:03,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:52:03,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431366008] [2024-11-13 15:52:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:03,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:52:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:03,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:52:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:03,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:52:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431366008] [2024-11-13 15:52:03,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431366008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:52:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470862255] [2024-11-13 15:52:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:03,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:03,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:03,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:03,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:52:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:03,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:52:03,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:04,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:04,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470862255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:52:04,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:52:04,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-13 15:52:04,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750407279] [2024-11-13 15:52:04,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:52:04,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:52:04,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:52:04,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:52:04,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:52:04,144 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:52:04,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:04,312 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-13 15:52:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:52:04,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2024-11-13 15:52:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:04,314 INFO L225 Difference]: With dead ends: 58 [2024-11-13 15:52:04,314 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 15:52:04,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:52:04,317 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:04,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 67 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:52:04,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 15:52:04,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2024-11-13 15:52:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 15:52:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-13 15:52:04,330 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 18 [2024-11-13 15:52:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:04,330 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-13 15:52:04,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:52:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-13 15:52:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 15:52:04,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:04,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:04,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:52:04,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:04,536 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:04,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1742884391, now seen corresponding path program 1 times [2024-11-13 15:52:04,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:52:04,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568312377] [2024-11-13 15:52:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:52:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:52:04,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006300642] [2024-11-13 15:52:04,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:04,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:04,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:04,566 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:04,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:52:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:04,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:52:04,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:04,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:52:04,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:52:04,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568312377] [2024-11-13 15:52:04,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:52:04,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006300642] [2024-11-13 15:52:04,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006300642] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:52:04,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:52:04,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-13 15:52:04,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308376778] [2024-11-13 15:52:04,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:52:04,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:52:04,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:52:04,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:52:04,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:52:04,954 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-13 15:52:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:05,049 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-11-13 15:52:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:52:05,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 18 [2024-11-13 15:52:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:05,051 INFO L225 Difference]: With dead ends: 60 [2024-11-13 15:52:05,051 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 15:52:05,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:52:05,053 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:05,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:52:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 15:52:05,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-13 15:52:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 15:52:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2024-11-13 15:52:05,094 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 18 [2024-11-13 15:52:05,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:05,094 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2024-11-13 15:52:05,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-13 15:52:05,095 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2024-11-13 15:52:05,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 15:52:05,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:05,096 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:05,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:52:05,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:05,297 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:05,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:05,297 INFO L85 PathProgramCache]: Analyzing trace with hash 298767263, now seen corresponding path program 1 times [2024-11-13 15:52:05,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:52:05,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913823267] [2024-11-13 15:52:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:05,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:52:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:52:05,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182235331] [2024-11-13 15:52:05,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:05,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:05,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:05,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:05,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:52:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:05,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:52:05,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:52:05,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:52:05,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:52:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913823267] [2024-11-13 15:52:05,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:52:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182235331] [2024-11-13 15:52:05,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182235331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:52:05,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:52:05,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-13 15:52:05,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802681152] [2024-11-13 15:52:05,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:52:05,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:52:05,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:52:05,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:52:05,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:52:05,826 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:52:06,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:06,033 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-13 15:52:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:52:06,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2024-11-13 15:52:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:06,035 INFO L225 Difference]: With dead ends: 55 [2024-11-13 15:52:06,037 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 15:52:06,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:52:06,040 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:06,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 91 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:52:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 15:52:06,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-13 15:52:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:52:06,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-13 15:52:06,069 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 29 [2024-11-13 15:52:06,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:06,070 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-13 15:52:06,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:52:06,070 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-13 15:52:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 15:52:06,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:06,072 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:06,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:52:06,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:06,272 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:06,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:06,273 INFO L85 PathProgramCache]: Analyzing trace with hash 40697230, now seen corresponding path program 1 times [2024-11-13 15:52:06,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:52:06,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662263162] [2024-11-13 15:52:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:06,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:52:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:06,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:52:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:06,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 15:52:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:06,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-13 15:52:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:06,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 15:52:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:06,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 15:52:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 15:52:06,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:52:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662263162] [2024-11-13 15:52:06,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662263162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:52:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546536859] [2024-11-13 15:52:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:06,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:06,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:06,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:06,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:52:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:06,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:52:06,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:52:06,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 15:52:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546536859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:52:07,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:52:07,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2024-11-13 15:52:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990716023] [2024-11-13 15:52:07,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:52:07,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:52:07,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:52:07,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:52:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:52:07,161 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-13 15:52:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:07,610 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2024-11-13 15:52:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:52:07,611 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) Word has length 47 [2024-11-13 15:52:07,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:07,613 INFO L225 Difference]: With dead ends: 132 [2024-11-13 15:52:07,613 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 15:52:07,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:52:07,614 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:07,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 106 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:52:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 15:52:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2024-11-13 15:52:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 74 states have internal predecessors, (76), 17 states have call successors, (17), 11 states have call predecessors, (17), 10 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 15:52:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2024-11-13 15:52:07,670 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 47 [2024-11-13 15:52:07,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:07,671 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2024-11-13 15:52:07,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-13 15:52:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2024-11-13 15:52:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 15:52:07,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:07,674 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:07,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:52:07,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 15:52:07,875 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:07,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1074926931, now seen corresponding path program 2 times [2024-11-13 15:52:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:52:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575831469] [2024-11-13 15:52:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:07,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:52:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:52:07,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692482657] [2024-11-13 15:52:07,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:52:07,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:07,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:07,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:07,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:52:08,144 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:52:08,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-13 15:52:08,146 WARN L124 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2024-11-13 15:52:08,146 INFO L325 BasicCegarLoop]: Counterexample might be feasible [2024-11-13 15:52:08,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 15:52:08,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:52:08,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:08,359 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:08,378 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:52:08,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:52:08 BoogieIcfgContainer [2024-11-13 15:52:08,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:52:08,383 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:52:08,384 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:52:08,384 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:52:08,385 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:52:02" (3/4) ... [2024-11-13 15:52:08,388 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 15:52:08,389 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:52:08,390 INFO L158 Benchmark]: Toolchain (without parser) took 6802.42ms. Allocated memory is still 142.6MB. Free memory was 118.4MB in the beginning and 77.5MB in the end (delta: 41.0MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2024-11-13 15:52:08,390 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:52:08,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.17ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 107.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:52:08,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.86ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:52:08,391 INFO L158 Benchmark]: Boogie Preprocessor took 36.85ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:52:08,391 INFO L158 Benchmark]: RCFGBuilder took 344.31ms. Allocated memory is still 142.6MB. Free memory was 104.8MB in the beginning and 94.3MB in the end (delta: 10.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 15:52:08,392 INFO L158 Benchmark]: TraceAbstraction took 6020.20ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 78.6MB in the end (delta: 15.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2024-11-13 15:52:08,392 INFO L158 Benchmark]: Witness Printer took 5.32ms. Allocated memory is still 142.6MB. Free memory was 77.5MB in the beginning and 77.5MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:52:08,394 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.17ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 107.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.86ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.85ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 344.31ms. Allocated memory is still 142.6MB. Free memory was 104.8MB in the beginning and 94.3MB in the end (delta: 10.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6020.20ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 78.6MB in the end (delta: 15.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Witness Printer took 5.32ms. Allocated memory is still 142.6MB. Free memory was 77.5MB in the beginning and 77.5MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 [L28] EXPR counter++ [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] EXPR counter++ [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] EXPR counter++ [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] EXPR counter++ [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] EXPR counter++ [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND TRUE !(c < k) [L39] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L39] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L40] CALL __VERIFIER_assert(k*y == y*y) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 8, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 438 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 313 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 188 IncrementalHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 125 mSDtfsCounter, 188 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 270 GetRequests, 213 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=7, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 35 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 305 ConstructedInterpolants, 0 QuantifiedInterpolants, 968 SizeOfPredicates, 9 NumberOfNonLiveVariables, 425 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 175/312 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 15:52:08,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd --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 e51b21c2da790a7136d7ad701fd2bec1367e3ae6dd3a60c613fa7cfa4db22905 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:52:11,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:52:12,022 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 15:52:12,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:52:12,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:52:12,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:52:12,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:52:12,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:52:12,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:52:12,091 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:52:12,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:52:12,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:52:12,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:52:12,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:52:12,093 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:52:12,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:52:12,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:52:12,096 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:52:12,096 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:52:12,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:52:12,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:52:12,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:52:12,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:52:12,097 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:52:12,097 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:52:12,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:52:12,097 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:52:12,097 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:52:12,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:52:12,097 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:52:12,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:52:12,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:52:12,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:52:12,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:52:12,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:52:12,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:52:12,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:52:12,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:52:12,098 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:52:12,099 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:52:12,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:52:12,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:52:12,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:52:12,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:52:12,101 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_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd 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 -> e51b21c2da790a7136d7ad701fd2bec1367e3ae6dd3a60c613fa7cfa4db22905 [2024-11-13 15:52:12,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:52:12,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:52:12,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:52:12,485 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:52:12,485 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:52:12,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c Unable to find full path for "g++" [2024-11-13 15:52:15,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:52:15,373 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:52:15,377 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c [2024-11-13 15:52:15,391 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/data/86483a7f8/93b2c4074cad4c5584e37f1d4bad2a62/FLAG16177f4f1 [2024-11-13 15:52:15,444 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/data/86483a7f8/93b2c4074cad4c5584e37f1d4bad2a62 [2024-11-13 15:52:15,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:52:15,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:52:15,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:52:15,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:52:15,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:52:15,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c1dc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15, skipping insertion in model container [2024-11-13 15:52:15,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:52:15,701 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_f563e723-f080-4d50-9ddb-a1b2cfd38d09/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c[458,471] [2024-11-13 15:52:15,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:52:15,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:52:15,780 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_f563e723-f080-4d50-9ddb-a1b2cfd38d09/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound20.c[458,471] [2024-11-13 15:52:15,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:52:15,834 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:52:15,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15 WrapperNode [2024-11-13 15:52:15,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:52:15,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:52:15,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:52:15,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:52:15,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,885 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2024-11-13 15:52:15,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:52:15,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:52:15,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:52:15,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:52:15,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,925 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]. [2024-11-13 15:52:15,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:52:15,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:52:15,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:52:15,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:52:15,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (1/1) ... [2024-11-13 15:52:15,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:52:15,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:16,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:52:16,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:52:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:52:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 15:52:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:52:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:52:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 15:52:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 15:52:16,119 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:52:16,121 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:52:16,692 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-13 15:52:16,692 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:52:16,707 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:52:16,708 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:52:16,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:52:16 BoogieIcfgContainer [2024-11-13 15:52:16,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:52:16,712 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:52:16,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:52:16,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:52:16,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:52:15" (1/3) ... [2024-11-13 15:52:16,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e10545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:52:16, skipping insertion in model container [2024-11-13 15:52:16,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:52:15" (2/3) ... [2024-11-13 15:52:16,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e10545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:52:16, skipping insertion in model container [2024-11-13 15:52:16,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:52:16" (3/3) ... [2024-11-13 15:52:16,724 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound20.c [2024-11-13 15:52:16,744 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:52:16,746 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG ps5-ll_unwindbound20.c that has 2 procedures, 20 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 15:52:16,818 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:52:16,834 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;@23bd1d34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:52:16,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:52:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:52:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:52:16,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:16,852 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:16,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:16,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash -580201080, now seen corresponding path program 1 times [2024-11-13 15:52:16,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:52:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564025406] [2024-11-13 15:52:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:16,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:16,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:16,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:16,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:52:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:17,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 15:52:17,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:17,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:52:17,252 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:52:17,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564025406] [2024-11-13 15:52:17,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564025406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:52:17,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:52:17,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:52:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373225355] [2024-11-13 15:52:17,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:52:17,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 15:52:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:52:17,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 15:52:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:52:17,295 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-13 15:52:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:17,322 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2024-11-13 15:52:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 15:52:17,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2024-11-13 15:52:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:17,334 INFO L225 Difference]: With dead ends: 37 [2024-11-13 15:52:17,334 INFO L226 Difference]: Without dead ends: 16 [2024-11-13 15:52:17,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:52:17,344 INFO L432 NwaCegarLoop]: 23 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, 23 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 [2024-11-13 15:52:17,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:52:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-13 15:52:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-13 15:52:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:52:17,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-13 15:52:17,399 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2024-11-13 15:52:17,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:17,400 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-13 15:52:17,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-13 15:52:17,400 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-13 15:52:17,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:52:17,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:17,402 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:17,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:52:17,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:17,603 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:17,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2016134659, now seen corresponding path program 1 times [2024-11-13 15:52:17,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:52:17,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691580899] [2024-11-13 15:52:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:17,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:17,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:17,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:17,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:52:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:17,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:52:17,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:17,996 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:52:17,996 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:52:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691580899] [2024-11-13 15:52:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691580899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:52:17,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:52:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:52:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111895823] [2024-11-13 15:52:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:52:17,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:52:17,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:52:18,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:52:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:52:18,000 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2024-11-13 15:52:18,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:18,043 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-13 15:52:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:52:18,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 [2024-11-13 15:52:18,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:18,047 INFO L225 Difference]: With dead ends: 26 [2024-11-13 15:52:18,047 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 15:52:18,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:52:18,048 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:18,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:52:18,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 15:52:18,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-13 15:52:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:52:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-13 15:52:18,058 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2024-11-13 15:52:18,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:18,058 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-13 15:52:18,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2024-11-13 15:52:18,058 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-13 15:52:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:52:18,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:18,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:18,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:52:18,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:18,260 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:18,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2014347199, now seen corresponding path program 1 times [2024-11-13 15:52:18,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:52:18,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023745076] [2024-11-13 15:52:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:18,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:18,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:18,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:18,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:52:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:18,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:52:18,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:18,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:52:18,957 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:52:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023745076] [2024-11-13 15:52:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023745076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:52:18,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:52:18,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:52:18,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056527712] [2024-11-13 15:52:18,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:52:18,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:52:18,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:52:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:52:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:52:18,961 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2024-11-13 15:52:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:20,367 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-13 15:52:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:52:20,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 [2024-11-13 15:52:20,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:20,377 INFO L225 Difference]: With dead ends: 28 [2024-11-13 15:52:20,377 INFO L226 Difference]: Without dead ends: 24 [2024-11-13 15:52:20,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:52:20,379 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:20,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:52:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-13 15:52:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-13 15:52:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:52:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-13 15:52:20,389 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2024-11-13 15:52:20,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:20,389 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-13 15:52:20,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2024-11-13 15:52:20,391 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-13 15:52:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 15:52:20,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:20,392 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:20,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:52:20,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:20,593 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:20,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:20,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1741096931, now seen corresponding path program 1 times [2024-11-13 15:52:20,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:52:20,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104780296] [2024-11-13 15:52:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:20,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:20,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:20,598 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:20,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:52:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:21,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:52:21,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:21,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:21,547 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:52:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104780296] [2024-11-13 15:52:21,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104780296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:52:21,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:52:21,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2024-11-13 15:52:21,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298565953] [2024-11-13 15:52:21,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:52:21,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:52:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:52:21,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:52:21,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:52:21,552 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:52:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:28,566 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-13 15:52:28,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:52:28,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-13 15:52:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:28,580 INFO L225 Difference]: With dead ends: 58 [2024-11-13 15:52:28,580 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 15:52:28,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:52:28,582 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:28,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 71 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-13 15:52:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 15:52:28,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2024-11-13 15:52:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 15:52:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-13 15:52:28,595 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 18 [2024-11-13 15:52:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:28,596 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-13 15:52:28,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:52:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-13 15:52:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 15:52:28,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:28,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:28,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:52:28,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:28,798 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:52:28,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1742884391, now seen corresponding path program 1 times [2024-11-13 15:52:28,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:52:28,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538305626] [2024-11-13 15:52:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:28,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:28,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:28,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:28,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:52:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:29,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:52:29,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:29,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:52:54,531 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:52:54,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538305626] [2024-11-13 15:52:54,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538305626] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:52:54,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:52:54,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-13 15:52:54,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253591440] [2024-11-13 15:52:54,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:52:54,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:52:54,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:52:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:52:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:52:54,533 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-13 15:52:57,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:52:59,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:53:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:53:00,507 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-11-13 15:53:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:53:00,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 18 [2024-11-13 15:53:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:53:00,510 INFO L225 Difference]: With dead ends: 60 [2024-11-13 15:53:00,510 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 15:53:00,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:53:00,511 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:53:00,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-13 15:53:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 15:53:00,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-13 15:53:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 15:53:00,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2024-11-13 15:53:00,558 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 18 [2024-11-13 15:53:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:53:00,561 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2024-11-13 15:53:00,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-13 15:53:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2024-11-13 15:53:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 15:53:00,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:53:00,562 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:53:00,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:53:00,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:00,763 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:53:00,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:53:00,763 INFO L85 PathProgramCache]: Analyzing trace with hash 298767263, now seen corresponding path program 1 times [2024-11-13 15:53:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:53:00,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961316864] [2024-11-13 15:53:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:00,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:00,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:53:00,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:53:00,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:53:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:01,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:53:01,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:53:02,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:53:19,448 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:53:19,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961316864] [2024-11-13 15:53:19,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961316864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:53:19,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:53:19,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-11-13 15:53:19,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192954377] [2024-11-13 15:53:19,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:53:19,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:53:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:53:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:53:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:53:19,451 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:53:36,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:53:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:53:37,937 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-13 15:53:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:53:37,937 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2024-11-13 15:53:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:53:37,938 INFO L225 Difference]: With dead ends: 55 [2024-11-13 15:53:37,939 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 15:53:37,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:53:37,940 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:53:37,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 174 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-13 15:53:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 15:53:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-13 15:53:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:53:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-13 15:53:37,960 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 29 [2024-11-13 15:53:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:53:37,960 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-13 15:53:37,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:53:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-13 15:53:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 15:53:37,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:53:37,962 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:53:38,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:53:38,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:38,163 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:53:38,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:53:38,164 INFO L85 PathProgramCache]: Analyzing trace with hash 40697230, now seen corresponding path program 1 times [2024-11-13 15:53:38,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:53:38,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136029932] [2024-11-13 15:53:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:38,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:38,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:53:38,167 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:53:38,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:53:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:39,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:53:39,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:53:40,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 15:53:40,970 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:53:40,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136029932] [2024-11-13 15:53:40,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136029932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:53:40,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:53:40,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-11-13 15:53:40,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314581308] [2024-11-13 15:53:40,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:53:40,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:53:40,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:53:40,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:53:40,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:53:40,973 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-13 15:53:57,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:54:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:01,150 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2024-11-13 15:54:01,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:54:01,163 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 47 [2024-11-13 15:54:01,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:01,165 INFO L225 Difference]: With dead ends: 132 [2024-11-13 15:54:01,165 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 15:54:01,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2024-11-13 15:54:01,167 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 96 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:01,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 204 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2024-11-13 15:54:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 15:54:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2024-11-13 15:54:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 74 states have internal predecessors, (76), 17 states have call successors, (17), 11 states have call predecessors, (17), 10 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 15:54:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2024-11-13 15:54:01,210 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 47 [2024-11-13 15:54:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:01,211 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2024-11-13 15:54:01,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-13 15:54:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2024-11-13 15:54:01,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 15:54:01,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:01,213 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:01,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:54:01,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:01,414 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:01,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:01,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1074926931, now seen corresponding path program 2 times [2024-11-13 15:54:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:54:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135847889] [2024-11-13 15:54:01,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:54:01,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:01,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:01,424 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:01,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:54:03,234 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:54:03,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:54:03,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:54:03,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 15:54:05,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 15:54:43,215 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:54:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135847889] [2024-11-13 15:54:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135847889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:43,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:54:43,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-13 15:54:43,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61850386] [2024-11-13 15:54:43,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:43,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:54:43,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:54:43,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:54:43,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:54:43,218 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand has 20 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-13 15:55:21,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:55:26,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:55:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:55:27,311 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2024-11-13 15:55:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:55:27,312 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 53 [2024-11-13 15:55:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:55:27,313 INFO L225 Difference]: With dead ends: 106 [2024-11-13 15:55:27,313 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 15:55:27,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 48.6s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:55:27,315 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:55:27,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 258 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2024-11-13 15:55:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 15:55:27,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-13 15:55:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-13 15:55:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2024-11-13 15:55:27,346 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 53 [2024-11-13 15:55:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:55:27,346 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2024-11-13 15:55:27,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-13 15:55:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2024-11-13 15:55:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 15:55:27,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:55:27,349 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:55:27,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:55:27,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:27,550 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:55:27,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1765010774, now seen corresponding path program 2 times [2024-11-13 15:55:27,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:55:27,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804343484] [2024-11-13 15:55:27,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:55:27,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:27,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:27,554 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:27,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:55:30,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:55:30,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:55:30,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:55:30,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 60 proven. 380 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:55:32,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 22 proven. 200 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-13 15:55:34,815 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:55:34,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804343484] [2024-11-13 15:55:34,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804343484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:55:34,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:55:34,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2024-11-13 15:55:34,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546406163] [2024-11-13 15:55:34,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:55:34,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:55:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:55:34,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:55:34,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:55:34,819 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 26 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 21 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-13 15:55:47,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:56:16,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:56:20,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:56:29,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:56:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:56:30,274 INFO L93 Difference]: Finished difference Result 236 states and 256 transitions. [2024-11-13 15:56:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 15:56:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 21 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) Word has length 95 [2024-11-13 15:56:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:56:30,288 INFO L225 Difference]: With dead ends: 236 [2024-11-13 15:56:30,288 INFO L226 Difference]: Without dead ends: 226 [2024-11-13 15:56:30,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=800, Invalid=1956, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 15:56:30,292 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 274 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:56:30,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 663 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 50.5s Time] [2024-11-13 15:56:30,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-13 15:56:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 181. [2024-11-13 15:56:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 129 states have (on average 1.0852713178294573) internal successors, (140), 138 states have internal predecessors, (140), 31 states have call successors, (31), 21 states have call predecessors, (31), 20 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 15:56:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 201 transitions. [2024-11-13 15:56:30,385 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 201 transitions. Word has length 95 [2024-11-13 15:56:30,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:56:30,386 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 201 transitions. [2024-11-13 15:56:30,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 21 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-13 15:56:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 201 transitions. [2024-11-13 15:56:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 15:56:30,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:56:30,392 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:30,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:56:30,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:30,593 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:56:30,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash -48776503, now seen corresponding path program 3 times [2024-11-13 15:56:30,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:56:30,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604174574] [2024-11-13 15:56:30,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:56:30,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:30,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:30,596 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:30,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:56:36,068 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-13 15:56:36,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:56:36,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:56:36,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 24 proven. 220 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-13 15:56:40,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 24 proven. 220 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-13 15:58:18,539 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:58:18,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604174574] [2024-11-13 15:58:18,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604174574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:18,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:58:18,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2024-11-13 15:58:18,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309180177] [2024-11-13 15:58:18,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:18,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 15:58:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:58:18,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 15:58:18,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:58:18,542 INFO L87 Difference]: Start difference. First operand 181 states and 201 transitions. Second operand has 32 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-13 15:58:47,753 WARN L286 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:59:09,089 WARN L286 SmtUtils]: Spent 8.37s on a formula simplification that was a NOOP. DAG size: 112 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:59:22,805 WARN L286 SmtUtils]: Spent 8.46s on a formula simplification that was a NOOP. DAG size: 101 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:59:33,426 WARN L286 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:59:44,208 WARN L286 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 16:00:28,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 16:00:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:33,796 INFO L93 Difference]: Finished difference Result 202 states and 232 transitions. [2024-11-13 16:00:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 16:00:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 101 [2024-11-13 16:00:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:33,810 INFO L225 Difference]: With dead ends: 202 [2024-11-13 16:00:33,810 INFO L226 Difference]: Without dead ends: 186 [2024-11-13 16:00:33,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 165.0s TimeCoverageRelationStatistics Valid=588, Invalid=2064, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 16:00:33,812 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 57 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:33,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 752 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time] [2024-11-13 16:00:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-13 16:00:33,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 182. [2024-11-13 16:00:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 136 states have (on average 1.0294117647058822) internal successors, (140), 136 states have internal predecessors, (140), 25 states have call successors, (25), 21 states have call predecessors, (25), 20 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-13 16:00:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 189 transitions. [2024-11-13 16:00:33,877 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 189 transitions. Word has length 101 [2024-11-13 16:00:33,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:33,877 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 189 transitions. [2024-11-13 16:00:33,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-13 16:00:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 189 transitions. [2024-11-13 16:00:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-13 16:00:33,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:33,880 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:34,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:00:34,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:34,083 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:34,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:34,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1748735186, now seen corresponding path program 3 times [2024-11-13 16:00:34,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:00:34,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727056554] [2024-11-13 16:00:34,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:00:34,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:34,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:34,087 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:34,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:00:44,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-11-13 16:00:44,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-13 16:00:44,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 16:00:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 16:00:48,839 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-13 16:00:48,839 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 16:00:48,840 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 16:00:49,042 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process [2024-11-13 16:00:49,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 137 [2024-11-13 16:00:49,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:49,104 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1] [2024-11-13 16:00:49,155 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 16:00:49,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 04:00:49 BoogieIcfgContainer [2024-11-13 16:00:49,158 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 16:00:49,159 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 16:00:49,159 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 16:00:49,159 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 16:00:49,160 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:52:16" (3/4) ... [2024-11-13 16:00:49,161 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 16:00:49,233 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 16:00:49,234 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 16:00:49,234 INFO L158 Benchmark]: Toolchain (without parser) took 513784.22ms. Allocated memory is still 117.4MB. Free memory was 94.8MB in the beginning and 34.2MB in the end (delta: 60.6MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2024-11-13 16:00:49,235 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 83.9MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:00:49,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.77ms. Allocated memory is still 117.4MB. Free memory was 94.6MB in the beginning and 82.8MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:00:49,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.24ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:00:49,236 INFO L158 Benchmark]: Boogie Preprocessor took 71.81ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:00:49,236 INFO L158 Benchmark]: RCFGBuilder took 748.11ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 68.2MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:00:49,236 INFO L158 Benchmark]: TraceAbstraction took 512445.61ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 40.3MB in the end (delta: 27.5MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2024-11-13 16:00:49,237 INFO L158 Benchmark]: Witness Printer took 75.12ms. Allocated memory is still 117.4MB. Free memory was 40.3MB in the beginning and 34.2MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:00:49,238 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 83.9MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.77ms. Allocated memory is still 117.4MB. Free memory was 94.6MB in the beginning and 82.8MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.24ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 81.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 71.81ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 748.11ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 68.2MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 512445.61ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 40.3MB in the end (delta: 27.5MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * Witness Printer took 75.12ms. Allocated memory is still 117.4MB. Free memory was 40.3MB in the beginning and 34.2MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) VAL [counter=0] [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [c=0, counter=0, k=115, x=0, y=0] [L28] EXPR counter++ VAL [c=0, counter=1, k=115, x=0, y=0] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=0, counter=1, k=115, x=0, y=0] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=1, counter=1, k=115, x=1, y=1] [L28] EXPR counter++ VAL [c=1, counter=2, k=115, x=1, y=1] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=2] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=1, counter=2, k=115, x=1, y=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=2, counter=2, k=115, x=17, y=2] [L28] EXPR counter++ VAL [c=2, counter=3, k=115, x=17, y=2] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=3] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=2, counter=3, k=115, x=17, y=2] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=3, counter=3, k=115, x=98, y=3] [L28] EXPR counter++ VAL [c=3, counter=4, k=115, x=98, y=3] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=4] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=3, counter=4, k=115, x=98, y=3] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=4, counter=4, k=115, x=354, y=4] [L28] EXPR counter++ VAL [c=4, counter=5, k=115, x=354, y=4] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=5] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=4, counter=5, k=115, x=354, y=4] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=5, counter=5, k=115, x=979, y=5] [L28] EXPR counter++ VAL [c=5, counter=6, k=115, x=979, y=5] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=6] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=6] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=5, counter=6, k=115, x=979, y=5] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=6, counter=6, k=115, x=2275, y=6] [L28] EXPR counter++ VAL [c=6, counter=7, k=115, x=2275, y=6] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=7] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=7] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=6, counter=7, k=115, x=2275, y=6] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=7, counter=7, k=115, x=4676, y=7] [L28] EXPR counter++ VAL [c=7, counter=8, k=115, x=4676, y=7] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=8] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=8] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=7, counter=8, k=115, x=4676, y=7] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=8, counter=8, k=115, x=8772, y=8] [L28] EXPR counter++ VAL [c=8, counter=9, k=115, x=8772, y=8] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=9] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=8, counter=9, k=115, x=8772, y=8] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=9, counter=9, k=115, x=15333, y=9] [L28] EXPR counter++ VAL [c=9, counter=10, k=115, x=15333, y=9] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=10] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=10] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=9, counter=10, k=115, x=15333, y=9] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=10, counter=10, k=115, x=25333, y=10] [L28] EXPR counter++ VAL [c=10, counter=11, k=115, x=25333, y=10] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=11] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=11] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=10, counter=11, k=115, x=25333, y=10] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=11, counter=11, k=115, x=39974, y=11] [L28] EXPR counter++ VAL [c=11, counter=12, k=115, x=39974, y=11] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=12] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=12] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=11, counter=12, k=115, x=39974, y=11] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=12, counter=12, k=115, x=60710, y=12] [L28] EXPR counter++ VAL [c=12, counter=13, k=115, x=60710, y=12] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=13] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=13] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=12, counter=13, k=115, x=60710, y=12] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=13, counter=13, k=115, x=89271, y=13] [L28] EXPR counter++ VAL [c=13, counter=14, k=115, x=89271, y=13] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=14] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=14] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=13, counter=14, k=115, x=89271, y=13] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=14, counter=14, k=115, x=127687, y=14] [L28] EXPR counter++ VAL [c=14, counter=15, k=115, x=127687, y=14] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=15] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=15] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=14, counter=15, k=115, x=127687, y=14] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=15, counter=15, k=115, x=178312, y=15] [L28] EXPR counter++ VAL [c=15, counter=16, k=115, x=178312, y=15] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=16] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=16] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=15, counter=16, k=115, x=178312, y=15] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=16, counter=16, k=115, x=243848, y=16] [L28] EXPR counter++ VAL [c=16, counter=17, k=115, x=243848, y=16] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=17] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=17] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=16, counter=17, k=115, x=243848, y=16] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=17, counter=17, k=115, x=327369, y=17] [L28] EXPR counter++ VAL [c=17, counter=18, k=115, x=327369, y=17] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=18] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=18] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=17, counter=18, k=115, x=327369, y=17] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=18, counter=18, k=115, x=432345, y=18] [L28] EXPR counter++ VAL [c=18, counter=19, k=115, x=432345, y=18] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=19] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=19] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=18, counter=19, k=115, x=432345, y=18] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=19, counter=19, k=115, x=562666, y=19] [L28] EXPR counter++ VAL [c=19, counter=20, k=115, x=562666, y=19] [L28] COND TRUE counter++<20 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=20] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=20] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=19, counter=20, k=115, x=562666, y=19] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=20, counter=20, k=115, x=722666, y=20] [L28] EXPR counter++ VAL [c=20, counter=21, k=115, x=722666, y=20] [L28] COND FALSE !(counter++<20) [L39] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=21] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=21] [L39] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=20, counter=21, k=115, x=722666, y=20] [L40] CALL __VERIFIER_assert(k*y == y*y) VAL [\old(cond)=0, counter=21] [L10] COND TRUE !(cond) VAL [\old(cond)=0, counter=21] [L12] reach_error() VAL [\old(cond)=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 512.3s, OverallIterations: 11, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 288.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 513 SdHoareTripleChecker+Valid, 129.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 504 mSDsluCounter, 2305 SdHoareTripleChecker+Invalid, 121.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2002 mSDsCounter, 279 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1456 IncrementalHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 279 mSolverCounterUnsat, 303 mSDtfsCounter, 1456 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 826 GetRequests, 630 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 260.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=10, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 84 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 22.9s SatisfiabilityAnalysisTime, 193.7s InterpolantComputationTime, 565 NumberOfCodeBlocks, 565 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 5035 SizeOfPredicates, 22 NumberOfNonLiveVariables, 771 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 1147/2350 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-13 16:00:49,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f563e723-f080-4d50-9ddb-a1b2cfd38d09/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE