./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.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_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/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_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/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_5d901f56-14d2-4fd4-a8a9-957fedb06631/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 1eba5bc7e50ef659abfe155713ae512eb1ae4032ecb78db63a02f9acbcdf9dbe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:20:58,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:20:58,192 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:20:58,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:20:58,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:20:58,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:20:58,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:20:58,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:20:58,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:20:58,244 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:20:58,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:20:58,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:20:58,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:20:58,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:20:58,246 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:20:58,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:20:58,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:20:58,246 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:20:58,247 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:20:58,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:20:58,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:20:58,249 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:20:58,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:20:58,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:20:58,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:20:58,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:20:58,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:20:58,250 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:20:58,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:20:58,250 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:20:58,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:20:58,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:20:58,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:20:58,250 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_5d901f56-14d2-4fd4-a8a9-957fedb06631/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 -> 1eba5bc7e50ef659abfe155713ae512eb1ae4032ecb78db63a02f9acbcdf9dbe [2024-11-13 15:20:58,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:20:58,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:20:58,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:20:58,603 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:20:58,603 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:20:58,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c Unable to find full path for "g++" [2024-11-13 15:21:00,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:21:00,807 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:21:00,807 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c [2024-11-13 15:21:00,814 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/data/372f2934c/4daa2e7a782c416cb9c2b053f7b5da3e/FLAG7dd735142 [2024-11-13 15:21:00,827 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/data/372f2934c/4daa2e7a782c416cb9c2b053f7b5da3e [2024-11-13 15:21:00,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:21:00,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:21:00,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:21:00,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:21:00,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:21:00,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:21:00" (1/1) ... [2024-11-13 15:21:00,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9047c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:00, skipping insertion in model container [2024-11-13 15:21:00,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:21:00" (1/1) ... [2024-11-13 15:21:00,854 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:21:00,997 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_5d901f56-14d2-4fd4-a8a9-957fedb06631/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c[538,551] [2024-11-13 15:21:01,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:21:01,026 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:21:01,034 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_5d901f56-14d2-4fd4-a8a9-957fedb06631/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c[538,551] [2024-11-13 15:21:01,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:21:01,053 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:21:01,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01 WrapperNode [2024-11-13 15:21:01,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:21:01,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:21:01,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:21:01,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:21:01,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,083 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-13 15:21:01,084 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:21:01,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:21:01,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:21:01,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:21:01,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,100 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,111 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 15:21:01,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:21:01,122 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:21:01,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:21:01,122 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:21:01,123 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (1/1) ... [2024-11-13 15:21:01,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:21:01,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:01,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:21:01,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:21:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:21:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:21:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:21:01,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:21:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 15:21:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 15:21:01,260 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:21:01,262 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:21:01,406 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-13 15:21:01,406 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:21:01,415 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:21:01,416 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:21:01,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:21:01 BoogieIcfgContainer [2024-11-13 15:21:01,416 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:21:01,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:21:01,421 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:21:01,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:21:01,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:21:00" (1/3) ... [2024-11-13 15:21:01,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a6ab32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:21:01, skipping insertion in model container [2024-11-13 15:21:01,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:21:01" (2/3) ... [2024-11-13 15:21:01,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a6ab32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:21:01, skipping insertion in model container [2024-11-13 15:21:01,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:21:01" (3/3) ... [2024-11-13 15:21:01,430 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound5.c [2024-11-13 15:21:01,447 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:21:01,450 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hard-ll_unwindbound5.c that has 2 procedures, 28 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 15:21:01,504 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:21:01,516 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;@611b8b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:21:01,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:21:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 15:21:01,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:21:01,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:01,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:01,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:01,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:01,533 INFO L85 PathProgramCache]: Analyzing trace with hash -743065300, now seen corresponding path program 1 times [2024-11-13 15:21:01,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:01,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003776364] [2024-11-13 15:21:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:01,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:01,663 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 15:21:01,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:01,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003776364] [2024-11-13 15:21:01,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003776364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:01,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:01,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:21:01,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708364163] [2024-11-13 15:21:01,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:01,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 15:21:01,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 15:21:01,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:21:01,693 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:21:01,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:01,712 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2024-11-13 15:21:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 15:21:01,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-13 15:21:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:01,722 INFO L225 Difference]: With dead ends: 53 [2024-11-13 15:21:01,722 INFO L226 Difference]: Without dead ends: 24 [2024-11-13 15:21:01,725 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 15:21:01,728 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:01,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:21:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-13 15:21:01,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-13 15:21:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:21:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2024-11-13 15:21:01,764 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2024-11-13 15:21:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:01,764 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2024-11-13 15:21:01,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:21:01,765 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2024-11-13 15:21:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:21:01,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:01,766 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:01,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:21:01,767 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:01,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2013546815, now seen corresponding path program 1 times [2024-11-13 15:21:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:01,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977917306] [2024-11-13 15:21:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:01,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:01,995 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 15:21:01,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:01,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977917306] [2024-11-13 15:21:01,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977917306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:01,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:02,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:21:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680530986] [2024-11-13 15:21:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:02,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:21:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:21:02,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:21:02,002 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:21:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:02,132 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-11-13 15:21:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:21:02,135 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 15:21:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:02,138 INFO L225 Difference]: With dead ends: 38 [2024-11-13 15:21:02,138 INFO L226 Difference]: Without dead ends: 36 [2024-11-13 15:21:02,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:21:02,140 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:02,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 104 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-13 15:21:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2024-11-13 15:21:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:21:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-11-13 15:21:02,162 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2024-11-13 15:21:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:02,162 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-11-13 15:21:02,162 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 15:21:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-13 15:21:02,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:21:02,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:02,163 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:02,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:21:02,163 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:02,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash -902337544, now seen corresponding path program 1 times [2024-11-13 15:21:02,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:02,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003835010] [2024-11-13 15:21:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:02,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:02,364 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 15:21:02,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:02,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003835010] [2024-11-13 15:21:02,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003835010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:02,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:02,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:21:02,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349457724] [2024-11-13 15:21:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:02,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:21:02,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:02,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:21:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:21:02,369 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:21:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:02,395 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2024-11-13 15:21:02,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:21:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-13 15:21:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:02,396 INFO L225 Difference]: With dead ends: 44 [2024-11-13 15:21:02,397 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 15:21:02,397 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 15:21:02,398 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:02,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:21:02,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 15:21:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-13 15:21:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:21:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2024-11-13 15:21:02,407 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 12 [2024-11-13 15:21:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:02,407 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2024-11-13 15:21:02,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:21:02,408 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-13 15:21:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 15:21:02,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:02,409 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:02,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:21:02,409 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:02,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash 761098684, now seen corresponding path program 1 times [2024-11-13 15:21:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:02,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477677219] [2024-11-13 15:21:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:02,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:21:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:21:02,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:02,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477677219] [2024-11-13 15:21:02,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477677219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:02,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:02,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:21:02,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071939551] [2024-11-13 15:21:02,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:02,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:21:02,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:02,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:21:02,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:21:02,615 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:21:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:02,704 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-11-13 15:21:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:21:02,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-13 15:21:02,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:02,706 INFO L225 Difference]: With dead ends: 44 [2024-11-13 15:21:02,706 INFO L226 Difference]: Without dead ends: 42 [2024-11-13 15:21:02,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:21:02,707 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:02,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 101 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:02,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-13 15:21:02,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2024-11-13 15:21:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:21:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-13 15:21:02,732 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 15 [2024-11-13 15:21:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:02,736 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-13 15:21:02,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:21:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-13 15:21:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:21:02,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:02,737 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:02,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:21:02,737 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:02,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:02,738 INFO L85 PathProgramCache]: Analyzing trace with hash -831687839, now seen corresponding path program 1 times [2024-11-13 15:21:02,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:02,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809047854] [2024-11-13 15:21:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:02,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:21:02,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316022743] [2024-11-13 15:21:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:02,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:02,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:02,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:02,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:21:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:02,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:21:02,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:21:03,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:21:03,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809047854] [2024-11-13 15:21:03,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:21:03,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316022743] [2024-11-13 15:21:03,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316022743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:03,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:03,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:21:03,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910402228] [2024-11-13 15:21:03,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:03,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:21:03,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:03,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:21:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:21:03,042 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:21:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:03,152 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2024-11-13 15:21:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:21:03,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-13 15:21:03,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:03,153 INFO L225 Difference]: With dead ends: 63 [2024-11-13 15:21:03,155 INFO L226 Difference]: Without dead ends: 48 [2024-11-13 15:21:03,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:21:03,156 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:03,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:03,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-13 15:21:03,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-13 15:21:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 15:21:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2024-11-13 15:21:03,176 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 20 [2024-11-13 15:21:03,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:03,176 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2024-11-13 15:21:03,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:21:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2024-11-13 15:21:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 15:21:03,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:03,177 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:03,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:21:03,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:03,382 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:03,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:03,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1390753539, now seen corresponding path program 1 times [2024-11-13 15:21:03,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:03,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747805922] [2024-11-13 15:21:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:03,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:03,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:21:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:03,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:21:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:03,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:21:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:21:03,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:03,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747805922] [2024-11-13 15:21:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747805922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:03,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:03,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:21:03,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139773156] [2024-11-13 15:21:03,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:03,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:21:03,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:21:03,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:21:03,569 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:21:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:03,648 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2024-11-13 15:21:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:21:03,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-13 15:21:03,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:03,650 INFO L225 Difference]: With dead ends: 67 [2024-11-13 15:21:03,650 INFO L226 Difference]: Without dead ends: 60 [2024-11-13 15:21:03,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:21:03,653 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:03,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 108 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-13 15:21:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-13 15:21:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 40 states have internal predecessors, (46), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 15:21:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-11-13 15:21:03,676 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 28 [2024-11-13 15:21:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:03,677 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-11-13 15:21:03,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:21:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-11-13 15:21:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 15:21:03,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:03,681 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:03,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:21:03,681 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:03,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1389025661, now seen corresponding path program 1 times [2024-11-13 15:21:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:03,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120280569] [2024-11-13 15:21:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:21:03,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110961187] [2024-11-13 15:21:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:03,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:03,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:03,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:03,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:21:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:03,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:21:03,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:21:03,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:21:03,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:03,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120280569] [2024-11-13 15:21:03,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:21:03,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110961187] [2024-11-13 15:21:03,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110961187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:03,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:03,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:21:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622757745] [2024-11-13 15:21:03,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:03,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:21:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:21:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:21:03,980 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:21:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:04,087 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2024-11-13 15:21:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:21:04,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-13 15:21:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:04,090 INFO L225 Difference]: With dead ends: 73 [2024-11-13 15:21:04,090 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 15:21:04,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:21:04,091 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:04,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:04,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 15:21:04,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-11-13 15:21:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 48 states have internal predecessors, (56), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-13 15:21:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2024-11-13 15:21:04,121 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 28 [2024-11-13 15:21:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:04,121 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2024-11-13 15:21:04,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:21:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2024-11-13 15:21:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 15:21:04,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:04,126 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:04,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:21:04,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 15:21:04,326 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:04,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:04,327 INFO L85 PathProgramCache]: Analyzing trace with hash -405983045, now seen corresponding path program 1 times [2024-11-13 15:21:04,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:04,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513222548] [2024-11-13 15:21:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:04,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:04,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:21:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:04,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:21:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:04,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:21:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:04,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 15:21:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 15:21:04,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:04,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513222548] [2024-11-13 15:21:04,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513222548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:21:04,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068730850] [2024-11-13 15:21:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:04,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:04,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:04,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:21:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:04,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:21:04,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:21:04,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 15:21:04,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068730850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:04,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:21:04,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-13 15:21:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056212798] [2024-11-13 15:21:04,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:04,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:21:04,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:21:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:21:04,801 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 15:21:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:05,053 INFO L93 Difference]: Finished difference Result 157 states and 192 transitions. [2024-11-13 15:21:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:21:05,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 35 [2024-11-13 15:21:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:05,057 INFO L225 Difference]: With dead ends: 157 [2024-11-13 15:21:05,057 INFO L226 Difference]: Without dead ends: 132 [2024-11-13 15:21:05,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 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 15:21:05,061 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 54 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:05,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 132 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:21:05,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-13 15:21:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2024-11-13 15:21:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 85 states have internal predecessors, (97), 27 states have call successors, (27), 16 states have call predecessors, (27), 16 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-13 15:21:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2024-11-13 15:21:05,109 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 35 [2024-11-13 15:21:05,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:05,110 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2024-11-13 15:21:05,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-13 15:21:05,110 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2024-11-13 15:21:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 15:21:05,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:05,115 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:05,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:21:05,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:05,315 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:05,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:05,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1815888011, now seen corresponding path program 1 times [2024-11-13 15:21:05,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:05,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950612516] [2024-11-13 15:21:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:05,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:21:05,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771572917] [2024-11-13 15:21:05,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:05,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:05,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:05,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:05,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:21:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:05,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:21:05,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 15:21:05,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 15:21:05,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950612516] [2024-11-13 15:21:05,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:21:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771572917] [2024-11-13 15:21:05,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771572917] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:21:05,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:21:05,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-13 15:21:05,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111154760] [2024-11-13 15:21:05,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:05,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:21:05,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:21:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:21:05,765 INFO L87 Difference]: Start difference. First operand 125 states and 148 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:21:05,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:05,938 INFO L93 Difference]: Finished difference Result 148 states and 176 transitions. [2024-11-13 15:21:05,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:21:05,939 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-13 15:21:05,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:05,940 INFO L225 Difference]: With dead ends: 148 [2024-11-13 15:21:05,941 INFO L226 Difference]: Without dead ends: 142 [2024-11-13 15:21:05,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 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 15:21:05,942 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:05,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:05,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-13 15:21:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2024-11-13 15:21:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 92 states have internal predecessors, (103), 28 states have call successors, (28), 18 states have call predecessors, (28), 17 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-13 15:21:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2024-11-13 15:21:05,977 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 38 [2024-11-13 15:21:05,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:05,977 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2024-11-13 15:21:05,978 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:21:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2024-11-13 15:21:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 15:21:05,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:05,979 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:06,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:21:06,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:06,180 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:06,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash -855946340, now seen corresponding path program 1 times [2024-11-13 15:21:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114989950] [2024-11-13 15:21:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:21:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:21:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:21:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 15:21:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 15:21:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 15:21:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-13 15:21:06,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:06,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114989950] [2024-11-13 15:21:06,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114989950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:06,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:21:06,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:21:06,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360807640] [2024-11-13 15:21:06,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:06,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:21:06,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:21:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:21:06,398 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 15:21:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:06,497 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2024-11-13 15:21:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:21:06,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2024-11-13 15:21:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:06,500 INFO L225 Difference]: With dead ends: 139 [2024-11-13 15:21:06,500 INFO L226 Difference]: Without dead ends: 120 [2024-11-13 15:21:06,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:21:06,502 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:06,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 118 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-13 15:21:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-13 15:21:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 82 states have internal predecessors, (93), 25 states have call successors, (25), 16 states have call predecessors, (25), 15 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 15:21:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2024-11-13 15:21:06,550 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 44 [2024-11-13 15:21:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:06,551 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2024-11-13 15:21:06,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 15:21:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2024-11-13 15:21:06,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 15:21:06,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:06,555 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:06,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:21:06,555 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:06,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash -342408490, now seen corresponding path program 1 times [2024-11-13 15:21:06,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:06,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347030071] [2024-11-13 15:21:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:06,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:21:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:21:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:21:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 15:21:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 15:21:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 15:21:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 15:21:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 15:21:06,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347030071] [2024-11-13 15:21:06,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347030071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:21:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536833530] [2024-11-13 15:21:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:06,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:06,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:06,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:06,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:21:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:06,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:21:06,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 36 proven. 42 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 15:21:06,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 15:21:07,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536833530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:07,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:21:07,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 9 [2024-11-13 15:21:07,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4253281] [2024-11-13 15:21:07,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:07,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:21:07,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:07,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:21:07,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:21:07,101 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-13 15:21:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:07,318 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2024-11-13 15:21:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:21:07,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 51 [2024-11-13 15:21:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:07,321 INFO L225 Difference]: With dead ends: 196 [2024-11-13 15:21:07,321 INFO L226 Difference]: Without dead ends: 175 [2024-11-13 15:21:07,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:21:07,322 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 43 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:07,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 185 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:07,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-13 15:21:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2024-11-13 15:21:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 112 states have (on average 1.1785714285714286) internal successors, (132), 118 states have internal predecessors, (132), 37 states have call successors, (37), 21 states have call predecessors, (37), 20 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-13 15:21:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 203 transitions. [2024-11-13 15:21:07,364 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 203 transitions. Word has length 51 [2024-11-13 15:21:07,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:07,365 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 203 transitions. [2024-11-13 15:21:07,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-13 15:21:07,365 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 203 transitions. [2024-11-13 15:21:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 15:21:07,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:07,366 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:07,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:21:07,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:07,573 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:07,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:07,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1735124633, now seen corresponding path program 1 times [2024-11-13 15:21:07,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:07,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864700490] [2024-11-13 15:21:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:07,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:21:07,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344410662] [2024-11-13 15:21:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:07,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:07,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:07,634 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:07,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:21:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:07,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 15:21:07,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 15:21:08,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 15:21:11,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864700490] [2024-11-13 15:21:11,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:21:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344410662] [2024-11-13 15:21:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344410662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:11,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:21:11,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-13 15:21:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676741940] [2024-11-13 15:21:11,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:11,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:21:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:21:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:21:11,624 INFO L87 Difference]: Start difference. First operand 170 states and 203 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-13 15:21:14,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 15:21:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:14,899 INFO L93 Difference]: Finished difference Result 283 states and 361 transitions. [2024-11-13 15:21:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:21:14,901 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 60 [2024-11-13 15:21:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:14,903 INFO L225 Difference]: With dead ends: 283 [2024-11-13 15:21:14,903 INFO L226 Difference]: Without dead ends: 230 [2024-11-13 15:21:14,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2024-11-13 15:21:14,907 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 105 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:14,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 299 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 15:21:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-13 15:21:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 198. [2024-11-13 15:21:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 140 states have internal predecessors, (159), 39 states have call successors, (39), 24 states have call predecessors, (39), 24 states have return successors, (37), 33 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-13 15:21:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 235 transitions. [2024-11-13 15:21:14,959 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 235 transitions. Word has length 60 [2024-11-13 15:21:14,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:14,960 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 235 transitions. [2024-11-13 15:21:14,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 8 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-13 15:21:14,960 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 235 transitions. [2024-11-13 15:21:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 15:21:14,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:14,964 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:14,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:21:15,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:15,165 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:15,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1956337099, now seen corresponding path program 1 times [2024-11-13 15:21:15,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:15,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137913070] [2024-11-13 15:21:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:15,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:21:15,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36345252] [2024-11-13 15:21:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:15,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:15,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:15,207 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:15,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:21:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:15,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:21:15,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-13 15:21:15,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-13 15:21:16,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:16,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137913070] [2024-11-13 15:21:16,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:21:16,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36345252] [2024-11-13 15:21:16,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36345252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:16,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:21:16,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-13 15:21:16,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056435067] [2024-11-13 15:21:16,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:16,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:21:16,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:16,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:21:16,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:21:16,860 INFO L87 Difference]: Start difference. First operand 198 states and 235 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-13 15:21:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:17,888 INFO L93 Difference]: Finished difference Result 288 states and 362 transitions. [2024-11-13 15:21:17,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:21:17,889 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 71 [2024-11-13 15:21:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:17,891 INFO L225 Difference]: With dead ends: 288 [2024-11-13 15:21:17,891 INFO L226 Difference]: Without dead ends: 247 [2024-11-13 15:21:17,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:21:17,892 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 85 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:17,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 438 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:21:17,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-13 15:21:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 209. [2024-11-13 15:21:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 142 states have (on average 1.1971830985915493) internal successors, (170), 145 states have internal predecessors, (170), 42 states have call successors, (42), 25 states have call predecessors, (42), 24 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-13 15:21:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 252 transitions. [2024-11-13 15:21:17,952 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 252 transitions. Word has length 71 [2024-11-13 15:21:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:17,954 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 252 transitions. [2024-11-13 15:21:17,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 10 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-13 15:21:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 252 transitions. [2024-11-13 15:21:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 15:21:17,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:17,956 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:17,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:21:18,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:18,160 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:18,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1082365573, now seen corresponding path program 2 times [2024-11-13 15:21:18,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:18,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074919739] [2024-11-13 15:21:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:18,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:21:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:21:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:21:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 15:21:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 15:21:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 15:21:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 15:21:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-13 15:21:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-13 15:21:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 15:21:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-13 15:21:18,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:18,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074919739] [2024-11-13 15:21:18,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074919739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:21:18,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432997230] [2024-11-13 15:21:18,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:21:18,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:18,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:18,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:18,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:21:18,576 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:21:18,576 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:21:18,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:21:18,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-13 15:21:18,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-13 15:21:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432997230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:18,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:21:18,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-13 15:21:18,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798133572] [2024-11-13 15:21:18,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:18,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:21:18,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:21:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:21:18,735 INFO L87 Difference]: Start difference. First operand 209 states and 252 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-13 15:21:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:18,839 INFO L93 Difference]: Finished difference Result 233 states and 285 transitions. [2024-11-13 15:21:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:21:18,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 74 [2024-11-13 15:21:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:18,842 INFO L225 Difference]: With dead ends: 233 [2024-11-13 15:21:18,842 INFO L226 Difference]: Without dead ends: 204 [2024-11-13 15:21:18,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:21:18,843 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:18,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:21:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-13 15:21:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2024-11-13 15:21:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 140 states have internal predecessors, (163), 42 states have call successors, (42), 25 states have call predecessors, (42), 24 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-13 15:21:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 245 transitions. [2024-11-13 15:21:18,899 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 245 transitions. Word has length 74 [2024-11-13 15:21:18,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:18,899 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 245 transitions. [2024-11-13 15:21:18,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-13 15:21:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 245 transitions. [2024-11-13 15:21:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 15:21:18,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:18,900 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:18,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:21:19,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:21:19,101 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:19,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1337253966, now seen corresponding path program 1 times [2024-11-13 15:21:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:19,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325799719] [2024-11-13 15:21:19,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:21:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:21:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:21:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 15:21:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 15:21:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 15:21:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 15:21:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-13 15:21:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-13 15:21:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 15:21:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-13 15:21:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-13 15:21:19,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:19,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325799719] [2024-11-13 15:21:19,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325799719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:21:19,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232105132] [2024-11-13 15:21:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:19,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:19,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:19,531 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:19,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:21:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:19,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:21:19,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-13 15:21:20,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-13 15:21:20,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232105132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:20,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:21:20,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 17 [2024-11-13 15:21:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12852544] [2024-11-13 15:21:20,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:20,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:21:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:20,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:21:20,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:21:20,547 INFO L87 Difference]: Start difference. First operand 204 states and 245 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 15 states have internal predecessors, (49), 9 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-13 15:21:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:21,002 INFO L93 Difference]: Finished difference Result 218 states and 265 transitions. [2024-11-13 15:21:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:21:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 15 states have internal predecessors, (49), 9 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) Word has length 76 [2024-11-13 15:21:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:21,006 INFO L225 Difference]: With dead ends: 218 [2024-11-13 15:21:21,006 INFO L226 Difference]: Without dead ends: 193 [2024-11-13 15:21:21,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:21:21,008 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 33 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:21,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 346 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:21:21,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-13 15:21:21,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2024-11-13 15:21:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 124 states have (on average 1.2016129032258065) internal successors, (149), 127 states have internal predecessors, (149), 38 states have call successors, (38), 23 states have call predecessors, (38), 22 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-13 15:21:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 223 transitions. [2024-11-13 15:21:21,057 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 223 transitions. Word has length 76 [2024-11-13 15:21:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:21,057 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 223 transitions. [2024-11-13 15:21:21,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 15 states have internal predecessors, (49), 9 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-13 15:21:21,058 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 223 transitions. [2024-11-13 15:21:21,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 15:21:21,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:21,058 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:21,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:21:21,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:21:21,259 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:21,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1025143664, now seen corresponding path program 1 times [2024-11-13 15:21:21,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:21,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74674010] [2024-11-13 15:21:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:21,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:21:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:21:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:21:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 15:21:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 15:21:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 15:21:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 15:21:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-13 15:21:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-13 15:21:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 15:21:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 15:21:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 15:21:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-13 15:21:21,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:21,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74674010] [2024-11-13 15:21:21,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74674010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:21:21,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276445396] [2024-11-13 15:21:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:21,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:21,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:21,403 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:21,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:21:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:21,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:21:21,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-13 15:21:21,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:21:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276445396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:21:21,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:21:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-13 15:21:21,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739308357] [2024-11-13 15:21:21,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:21:21,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:21:21,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:21,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:21:21,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:21:21,526 INFO L87 Difference]: Start difference. First operand 185 states and 223 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-13 15:21:21,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:21,647 INFO L93 Difference]: Finished difference Result 206 states and 249 transitions. [2024-11-13 15:21:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:21:21,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 80 [2024-11-13 15:21:21,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:21,649 INFO L225 Difference]: With dead ends: 206 [2024-11-13 15:21:21,649 INFO L226 Difference]: Without dead ends: 186 [2024-11-13 15:21:21,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:21:21,650 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 16 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:21,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 103 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-13 15:21:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2024-11-13 15:21:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 120 states have (on average 1.175) internal successors, (141), 122 states have internal predecessors, (141), 36 states have call successors, (36), 21 states have call predecessors, (36), 21 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:21:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 212 transitions. [2024-11-13 15:21:21,694 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 212 transitions. Word has length 80 [2024-11-13 15:21:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:21,694 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 212 transitions. [2024-11-13 15:21:21,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-13 15:21:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 212 transitions. [2024-11-13 15:21:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-13 15:21:21,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:21,696 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:21,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:21:21,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:21:21,896 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:21,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:21,897 INFO L85 PathProgramCache]: Analyzing trace with hash -995651331, now seen corresponding path program 2 times [2024-11-13 15:21:21,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:21,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21578352] [2024-11-13 15:21:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:21,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:21:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:21:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:21:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 15:21:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 15:21:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 15:21:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 15:21:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-13 15:21:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-13 15:21:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 15:21:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 15:21:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-13 15:21:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-13 15:21:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 26 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-13 15:21:22,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21578352] [2024-11-13 15:21:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21578352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:21:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535969610] [2024-11-13 15:21:22,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:21:22,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:22,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:22,156 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:21:22,231 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:21:22,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:21:22,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:21:22,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 72 proven. 260 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-13 15:21:22,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 26 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-13 15:21:22,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535969610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:22,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:21:22,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 8 [2024-11-13 15:21:22,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607117397] [2024-11-13 15:21:22,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:22,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:21:22,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:22,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:21:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:21:22,487 INFO L87 Difference]: Start difference. First operand 178 states and 212 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-11-13 15:21:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:22,653 INFO L93 Difference]: Finished difference Result 248 states and 308 transitions. [2024-11-13 15:21:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:21:22,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 89 [2024-11-13 15:21:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:22,656 INFO L225 Difference]: With dead ends: 248 [2024-11-13 15:21:22,656 INFO L226 Difference]: Without dead ends: 180 [2024-11-13 15:21:22,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:21:22,657 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:22,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 119 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:21:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-13 15:21:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-13 15:21:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 124 states have internal predecessors, (143), 36 states have call successors, (36), 21 states have call predecessors, (36), 21 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:21:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 214 transitions. [2024-11-13 15:21:22,718 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 214 transitions. Word has length 89 [2024-11-13 15:21:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:22,718 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 214 transitions. [2024-11-13 15:21:22,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-11-13 15:21:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 214 transitions. [2024-11-13 15:21:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 15:21:22,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:22,720 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:22,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 15:21:22,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:21:22,924 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:22,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:22,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1906227499, now seen corresponding path program 1 times [2024-11-13 15:21:22,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:22,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977150049] [2024-11-13 15:21:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:22,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:21:22,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18489871] [2024-11-13 15:21:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:22,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:22,975 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:22,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:21:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:23,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:21:23,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 15:21:24,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:21:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 15:21:39,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:21:39,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977150049] [2024-11-13 15:21:39,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:21:39,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18489871] [2024-11-13 15:21:39,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18489871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:21:39,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:21:39,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2024-11-13 15:21:39,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873175740] [2024-11-13 15:21:39,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:21:39,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:21:39,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:21:39,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:21:39,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:21:39,434 INFO L87 Difference]: Start difference. First operand 180 states and 214 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 21 states have internal predecessors, (56), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-13 15:21:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:21:42,618 INFO L93 Difference]: Finished difference Result 215 states and 264 transitions. [2024-11-13 15:21:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:21:42,619 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 21 states have internal predecessors, (56), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 92 [2024-11-13 15:21:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:21:42,621 INFO L225 Difference]: With dead ends: 215 [2024-11-13 15:21:42,621 INFO L226 Difference]: Without dead ends: 213 [2024-11-13 15:21:42,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2024-11-13 15:21:42,622 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 36 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:21:42,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 461 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 15:21:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-13 15:21:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 189. [2024-11-13 15:21:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 127 states have (on average 1.188976377952756) internal successors, (151), 129 states have internal predecessors, (151), 40 states have call successors, (40), 21 states have call predecessors, (40), 21 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-13 15:21:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 230 transitions. [2024-11-13 15:21:42,697 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 230 transitions. Word has length 92 [2024-11-13 15:21:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:21:42,697 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 230 transitions. [2024-11-13 15:21:42,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 21 states have internal predecessors, (56), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-13 15:21:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 230 transitions. [2024-11-13 15:21:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 15:21:42,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:21:42,701 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:21:42,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:21:42,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:21:42,905 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:21:42,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:21:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash 131220137, now seen corresponding path program 1 times [2024-11-13 15:21:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:21:42,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693186574] [2024-11-13 15:21:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:42,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:21:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:21:42,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987133539] [2024-11-13 15:21:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:21:42,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:21:42,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:21:42,944 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:21:42,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:21:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:21:43,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 15:21:43,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:21:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 15:21:44,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:22:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 15:22:33,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:22:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693186574] [2024-11-13 15:22:33,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:22:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987133539] [2024-11-13 15:22:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987133539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:22:33,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:22:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-11-13 15:22:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110263499] [2024-11-13 15:22:33,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:22:33,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 15:22:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:22:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 15:22:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-11-13 15:22:33,887 INFO L87 Difference]: Start difference. First operand 189 states and 230 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 23 states have internal predecessors, (56), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-13 15:22:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:22:37,466 INFO L93 Difference]: Finished difference Result 244 states and 309 transitions. [2024-11-13 15:22:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:22:37,467 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 23 states have internal predecessors, (56), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 92 [2024-11-13 15:22:37,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:22:37,468 INFO L225 Difference]: With dead ends: 244 [2024-11-13 15:22:37,468 INFO L226 Difference]: Without dead ends: 220 [2024-11-13 15:22:37,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:22:37,469 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 41 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:22:37,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 464 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 15:22:37,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-13 15:22:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 192. [2024-11-13 15:22:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 129 states have (on average 1.186046511627907) internal successors, (153), 132 states have internal predecessors, (153), 41 states have call successors, (41), 21 states have call predecessors, (41), 21 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-13 15:22:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 234 transitions. [2024-11-13 15:22:37,557 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 234 transitions. Word has length 92 [2024-11-13 15:22:37,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:22:37,558 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 234 transitions. [2024-11-13 15:22:37,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 23 states have internal predecessors, (56), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-13 15:22:37,559 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 234 transitions. [2024-11-13 15:22:37,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 15:22:37,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:22:37,562 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:22:37,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 15:22:37,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:22:37,766 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:22:37,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:22:37,766 INFO L85 PathProgramCache]: Analyzing trace with hash 132948015, now seen corresponding path program 3 times [2024-11-13 15:22:37,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:22:37,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85604422] [2024-11-13 15:22:37,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:22:37,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:22:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:37,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:22:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:37,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:22:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:37,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:22:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:37,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 15:22:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:37,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 15:22:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:37,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 15:22:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:37,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 15:22:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:37,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-13 15:22:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:37,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-13 15:22:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:38,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 15:22:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:38,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 15:22:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:38,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-13 15:22:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:38,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-13 15:22:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:22:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-13 15:22:38,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:22:38,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85604422] [2024-11-13 15:22:38,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85604422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:22:38,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860795107] [2024-11-13 15:22:38,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:22:38,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:22:38,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:22:38,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:22:38,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:22:38,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 15:22:38,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:22:38,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 15:22:38,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:22:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 37 proven. 55 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 15:22:39,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:22:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 37 proven. 55 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 15:22:59,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860795107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:22:59,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:22:59,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 30 [2024-11-13 15:22:59,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854645008] [2024-11-13 15:22:59,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:22:59,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 15:22:59,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:22:59,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 15:22:59,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:22:59,595 INFO L87 Difference]: Start difference. First operand 192 states and 234 transitions. Second operand has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 states have internal predecessors, (83), 17 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (39), 14 states have call predecessors, (39), 14 states have call successors, (39) [2024-11-13 15:23:14,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 15:23:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:23:22,309 INFO L93 Difference]: Finished difference Result 236 states and 279 transitions. [2024-11-13 15:23:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 15:23:22,310 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 states have internal predecessors, (83), 17 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (39), 14 states have call predecessors, (39), 14 states have call successors, (39) Word has length 92 [2024-11-13 15:23:22,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:23:22,311 INFO L225 Difference]: With dead ends: 236 [2024-11-13 15:23:22,311 INFO L226 Difference]: Without dead ends: 150 [2024-11-13 15:23:22,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=638, Invalid=3652, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 15:23:22,313 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 137 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:23:22,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 571 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 15:23:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-13 15:23:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2024-11-13 15:23:22,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 100 states have internal predecessors, (103), 24 states have call successors, (24), 20 states have call predecessors, (24), 20 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 15:23:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 150 transitions. [2024-11-13 15:23:22,357 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 150 transitions. Word has length 92 [2024-11-13 15:23:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:23:22,358 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 150 transitions. [2024-11-13 15:23:22,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 states have internal predecessors, (83), 17 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (39), 14 states have call predecessors, (39), 14 states have call successors, (39) [2024-11-13 15:23:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 150 transitions. [2024-11-13 15:23:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-13 15:23:22,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:23:22,359 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:22,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:23:22,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:23:22,563 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:23:22,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:22,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1726908647, now seen corresponding path program 2 times [2024-11-13 15:23:22,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:22,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310271591] [2024-11-13 15:23:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:22,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:23:22,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224835171] [2024-11-13 15:23:22,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:23:22,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:23:22,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:23:22,597 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:23:22,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:23:22,674 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:23:22,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-13 15:23:22,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:23:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:23:22,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:23:22,753 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:23:22,754 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 15:23:22,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:23:22,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 15:23:22,960 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:23,013 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:23:23,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:23:23 BoogieIcfgContainer [2024-11-13 15:23:23,021 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:23:23,021 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:23:23,022 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:23:23,022 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:23:23,023 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:21:01" (3/4) ... [2024-11-13 15:23:23,024 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 15:23:23,102 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 15:23:23,107 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:23:23,108 INFO L158 Benchmark]: Toolchain (without parser) took 142277.08ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 93.1MB in the beginning and 169.2MB in the end (delta: -76.1MB). Peak memory consumption was 153.9MB. Max. memory is 16.1GB. [2024-11-13 15:23:23,108 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:23:23,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.61ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 81.7MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:23:23,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.17ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:23:23,109 INFO L158 Benchmark]: Boogie Preprocessor took 36.76ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:23:23,109 INFO L158 Benchmark]: RCFGBuilder took 294.62ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 67.2MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:23:23,110 INFO L158 Benchmark]: TraceAbstraction took 141600.35ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 66.8MB in the beginning and 173.3MB in the end (delta: -106.5MB). Peak memory consumption was 128.7MB. Max. memory is 16.1GB. [2024-11-13 15:23:23,111 INFO L158 Benchmark]: Witness Printer took 85.66ms. Allocated memory is still 352.3MB. Free memory was 173.3MB in the beginning and 169.2MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:23:23,113 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.61ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 81.7MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.17ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.76ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 294.62ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 67.2MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 141600.35ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 66.8MB in the beginning and 173.3MB in the end (delta: -106.5MB). Peak memory consumption was 128.7MB. Max. memory is 16.1GB. * Witness Printer took 85.66ms. Allocated memory is still 352.3MB. Free memory was 173.3MB in the beginning and 169.2MB in the end (delta: 4.1MB). 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: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(B >= 1) [L12] COND FALSE !(!cond) VAL [counter=0] [L28] RET assume_abort_if_not(B >= 1) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [A=4, B=1, counter=0, d=1, p=1, q=0, r=4] [L35] EXPR counter++ VAL [A=4, B=1, counter=1, d=1, p=1, q=0, r=4] [L35] COND TRUE counter++<5 [L36] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L36] RET __VERIFIER_assert(q == 0) VAL [A=4, B=1, counter=1, d=1, p=1, q=0, r=4] [L37] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L37] RET __VERIFIER_assert(r == A) VAL [A=4, B=1, counter=1, d=1, p=1, q=0, r=4] [L38] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L38] RET __VERIFIER_assert(d == B * p) VAL [A=4, B=1, counter=1, d=1, p=1, q=0, r=4] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [A=4, B=1, counter=1, d=2, p=2, q=0, r=4] [L35] EXPR counter++ VAL [A=4, B=1, counter=2, d=2, p=2, q=0, r=4] [L35] COND TRUE counter++<5 [L36] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L36] RET __VERIFIER_assert(q == 0) VAL [A=4, B=1, counter=2, d=2, p=2, q=0, r=4] [L37] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L37] RET __VERIFIER_assert(r == A) VAL [A=4, B=1, counter=2, d=2, p=2, q=0, r=4] [L38] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L38] RET __VERIFIER_assert(d == B * p) VAL [A=4, B=1, counter=2, d=2, p=2, q=0, r=4] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [A=4, B=1, counter=2, d=4, p=4, q=0, r=4] [L35] EXPR counter++ VAL [A=4, B=1, counter=3, d=4, p=4, q=0, r=4] [L35] COND TRUE counter++<5 [L36] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, counter=3] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L36] RET __VERIFIER_assert(q == 0) VAL [A=4, B=1, counter=3, d=4, p=4, q=0, r=4] [L37] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, counter=3] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L37] RET __VERIFIER_assert(r == A) VAL [A=4, B=1, counter=3, d=4, p=4, q=0, r=4] [L38] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, counter=3] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L38] RET __VERIFIER_assert(d == B * p) VAL [A=4, B=1, counter=3, d=4, p=4, q=0, r=4] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [A=4, B=1, counter=3, d=8, p=8, q=0, r=4] [L35] EXPR counter++ VAL [A=4, B=1, counter=4, d=8, p=8, q=0, r=4] [L35] COND TRUE counter++<5 [L36] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, counter=4] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L36] RET __VERIFIER_assert(q == 0) VAL [A=4, B=1, counter=4, d=8, p=8, q=0, r=4] [L37] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, counter=4] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L37] RET __VERIFIER_assert(r == A) VAL [A=4, B=1, counter=4, d=8, p=8, q=0, r=4] [L38] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, counter=4] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L38] RET __VERIFIER_assert(d == B * p) VAL [A=4, B=1, counter=4, d=8, p=8, q=0, r=4] [L39] COND TRUE !(r >= d) VAL [A=4, B=1, counter=4, d=8, p=8, q=0, r=4] [L45] EXPR counter++ VAL [A=4, B=1, counter=5, d=8, p=8, q=0, r=4] [L45] COND TRUE counter++<5 [L46] CALL __VERIFIER_assert(A == q*B + r) VAL [\old(cond)=1, counter=5] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L46] RET __VERIFIER_assert(A == q*B + r) VAL [A=4, B=1, counter=5, d=8, p=8, q=0, r=4] [L47] CALL __VERIFIER_assert(d == B*p) VAL [\old(cond)=1, counter=5] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L47] RET __VERIFIER_assert(d == B*p) VAL [A=4, B=1, counter=5, d=8, p=8, q=0, r=4] [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 VAL [A=4, B=1, counter=5, d=4, p=4, q=0, r=4] [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p VAL [A=4, B=1, counter=5, d=4, p=4, q=4, r=0] [L45] EXPR counter++ VAL [A=4, B=1, counter=6, d=4, p=4, q=4, r=0] [L45] COND FALSE !(counter++<5) [L59] CALL __VERIFIER_assert(A == d*q + r) VAL [\old(cond)=0, counter=6] [L15] COND TRUE !(cond) VAL [\old(cond)=0, counter=6] [L17] reach_error() VAL [\old(cond)=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 141.5s, OverallIterations: 21, TraceHistogramMax: 15, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 36.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 662 SdHoareTripleChecker+Valid, 12.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 615 mSDsluCounter, 4067 SdHoareTripleChecker+Invalid, 12.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3329 mSDsCounter, 540 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3069 IncrementalHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 540 mSolverCounterUnsat, 738 mSDtfsCounter, 3069 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1958 GetRequests, 1689 SyntacticMatches, 10 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 37.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=13, InterpolantAutomatonStates: 209, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 183 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 99.3s InterpolantComputationTime, 2107 NumberOfCodeBlocks, 2079 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 2246 ConstructedInterpolants, 0 QuantifiedInterpolants, 44866 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2192 ConjunctsInSsa, 274 ConjunctsInUnsatCore, 38 InterpolantComputations, 10 PerfectInterpolantSequences, 6174/7077 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 15:23:23,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d901f56-14d2-4fd4-a8a9-957fedb06631/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