./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.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_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/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_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/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_4acaf43f-460b-4abd-9c1b-eba019949c82/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 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:43:41,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:43:41,779 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:43:41,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:43:41,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:43:41,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:43:41,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:43:41,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:43:41,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:43:41,813 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:43:41,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:43:41,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:43:41,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:43:41,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:43:41,818 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:43:41,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:43:41,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:43:41,819 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:43:41,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:43:41,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:43:41,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:43:41,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:43:41,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:43:41,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:43:41,820 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:43:41,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:43:41,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:43:41,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:43:41,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:43:41,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:43:41,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:43:41,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:43:41,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:43:41,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:43:41,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:43:41,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:43:41,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:43:41,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:43:41,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:43:41,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:43:41,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:43:41,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:43:41,823 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_4acaf43f-460b-4abd-9c1b-eba019949c82/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 -> 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a [2024-11-13 13:43:42,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:43:42,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:43:42,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:43:42,251 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:43:42,252 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:43:42,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c Unable to find full path for "g++" [2024-11-13 13:43:44,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:43:44,933 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:43:44,938 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2024-11-13 13:43:44,953 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/data/0daf46b54/57ee5708e1ea4d3e9e3ef6d4e241d836/FLAGacc993497 [2024-11-13 13:43:44,972 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/data/0daf46b54/57ee5708e1ea4d3e9e3ef6d4e241d836 [2024-11-13 13:43:44,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:43:44,977 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:43:44,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:43:44,979 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:43:44,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:43:44,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:44" (1/1) ... [2024-11-13 13:43:44,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecde773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:44, skipping insertion in model container [2024-11-13 13:43:44,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:44" (1/1) ... [2024-11-13 13:43:45,006 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:43:45,222 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_4acaf43f-460b-4abd-9c1b-eba019949c82/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c[537,550] [2024-11-13 13:43:45,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:43:45,258 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:43:45,270 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_4acaf43f-460b-4abd-9c1b-eba019949c82/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c[537,550] [2024-11-13 13:43:45,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:43:45,298 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:43:45,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45 WrapperNode [2024-11-13 13:43:45,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:43:45,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:43:45,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:43:45,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:43:45,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,339 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2024-11-13 13:43:45,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:43:45,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:43:45,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:43:45,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:43:45,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,368 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 13:43:45,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:43:45,382 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:43:45,382 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:43:45,382 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:43:45,383 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (1/1) ... [2024-11-13 13:43:45,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:43:45,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:45,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:43:45,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:43:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:43:45,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 13:43:45,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 13:43:45,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:43:45,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:43:45,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:43:45,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 13:43:45,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 13:43:45,553 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:43:45,558 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:43:45,784 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-13 13:43:45,784 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:43:45,796 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:43:45,797 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:43:45,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:45 BoogieIcfgContainer [2024-11-13 13:43:45,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:43:45,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:43:45,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:43:45,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:43:45,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:43:44" (1/3) ... [2024-11-13 13:43:45,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7977e983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:45, skipping insertion in model container [2024-11-13 13:43:45,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:45" (2/3) ... [2024-11-13 13:43:45,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7977e983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:45, skipping insertion in model container [2024-11-13 13:43:45,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:45" (3/3) ... [2024-11-13 13:43:45,813 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound5.c [2024-11-13 13:43:45,831 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:43:45,835 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG prodbin-ll_valuebound5.c that has 3 procedures, 27 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:43:45,924 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:43:45,946 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;@18e74065, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:43:45,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:43:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 13:43:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 13:43:45,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:43:45,972 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:45,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:43:45,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:45,982 INFO L85 PathProgramCache]: Analyzing trace with hash -238774536, now seen corresponding path program 1 times [2024-11-13 13:43:45,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:45,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100485741] [2024-11-13 13:43:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:46,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:43:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:46,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:43:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:46,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 13:43:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:43:46,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:46,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100485741] [2024-11-13 13:43:46,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100485741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:46,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:46,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:43:46,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566895652] [2024-11-13 13:43:46,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:46,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:43:46,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:46,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:43:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:43:46,316 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:43:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:43:46,336 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2024-11-13 13:43:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:43:46,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-13 13:43:46,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:43:46,348 INFO L225 Difference]: With dead ends: 51 [2024-11-13 13:43:46,348 INFO L226 Difference]: Without dead ends: 23 [2024-11-13 13:43:46,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 13:43:46,356 INFO L432 NwaCegarLoop]: 31 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, 31 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 13:43:46,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:43:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-13 13:43:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-13 13:43:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 13:43:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-13 13:43:46,404 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2024-11-13 13:43:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:43:46,405 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-13 13:43:46,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:43:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-13 13:43:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 13:43:46,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:43:46,407 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:46,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:43:46,408 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:43:46,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:46,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1385694406, now seen corresponding path program 1 times [2024-11-13 13:43:46,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:46,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48809305] [2024-11-13 13:43:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:46,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:43:46,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671788205] [2024-11-13 13:43:46,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:46,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:46,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:46,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:46,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:43:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:46,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:43:46,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:43:47,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:43:47,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:47,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48809305] [2024-11-13 13:43:47,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:43:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671788205] [2024-11-13 13:43:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671788205] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:47,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:43:47,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-11-13 13:43:47,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659451455] [2024-11-13 13:43:47,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:47,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:43:47,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:43:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:43:47,297 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 13:43:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:43:47,464 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-11-13 13:43:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:43:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 24 [2024-11-13 13:43:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:43:47,470 INFO L225 Difference]: With dead ends: 34 [2024-11-13 13:43:47,471 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 13:43:47,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:43:47,472 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:43:47,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:43:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 13:43:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-13 13:43:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 13:43:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-13 13:43:47,483 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2024-11-13 13:43:47,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:43:47,484 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-13 13:43:47,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (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 13:43:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-13 13:43:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 13:43:47,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:43:47,486 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:47,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:43:47,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 13:43:47,690 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:43:47,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash -117898051, now seen corresponding path program 1 times [2024-11-13 13:43:47,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:47,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707621925] [2024-11-13 13:43:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:47,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:47,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:43:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:48,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:43:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:48,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 13:43:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:48,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 13:43:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:43:48,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:48,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707621925] [2024-11-13 13:43:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707621925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:48,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:48,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:43:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334315794] [2024-11-13 13:43:48,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:48,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:43:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:43:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:43:48,128 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:43:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:43:48,255 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-13 13:43:48,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:43:48,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-11-13 13:43:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:43:48,258 INFO L225 Difference]: With dead ends: 39 [2024-11-13 13:43:48,258 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 13:43:48,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:43:48,259 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:43:48,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:43:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 13:43:48,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-13 13:43:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 13:43:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-13 13:43:48,282 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30 [2024-11-13 13:43:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:43:48,283 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-13 13:43:48,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:43:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-13 13:43:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 13:43:48,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:43:48,286 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:48,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:43:48,287 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:43:48,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1484114196, now seen corresponding path program 1 times [2024-11-13 13:43:48,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:48,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192298431] [2024-11-13 13:43:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:48,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:43:48,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885876473] [2024-11-13 13:43:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:48,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:48,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:48,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:48,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:43:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:48,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:43:48,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:43:51,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:43:57,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:57,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192298431] [2024-11-13 13:43:57,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:43:57,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885876473] [2024-11-13 13:43:57,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885876473] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:57,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:43:57,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-13 13:43:57,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362025075] [2024-11-13 13:43:57,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:57,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:43:57,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:57,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:43:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:43:57,098 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:43:57,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:43:57,493 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-11-13 13:43:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:43:57,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-13 13:43:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:43:57,495 INFO L225 Difference]: With dead ends: 42 [2024-11-13 13:43:57,496 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 13:43:57,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:43:57,497 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:43:57,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 88 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:43:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 13:43:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-11-13 13:43:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:43:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-11-13 13:43:57,512 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 33 [2024-11-13 13:43:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:43:57,513 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-11-13 13:43:57,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:43:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-11-13 13:43:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 13:43:57,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:43:57,517 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:57,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:43:57,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:57,718 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:43:57,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash 290893166, now seen corresponding path program 1 times [2024-11-13 13:43:57,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:57,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201987876] [2024-11-13 13:43:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:57,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:43:57,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784369100] [2024-11-13 13:43:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:57,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:57,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:57,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:57,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:43:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:57,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 13:43:57,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:43:58,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:43:59,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201987876] [2024-11-13 13:43:59,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:43:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784369100] [2024-11-13 13:43:59,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784369100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:59,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:43:59,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2024-11-13 13:43:59,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050097684] [2024-11-13 13:43:59,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:59,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 13:43:59,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:59,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 13:43:59,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:43:59,144 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 13:43:59,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:43:59,990 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2024-11-13 13:43:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:43:59,991 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 33 [2024-11-13 13:43:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:43:59,993 INFO L225 Difference]: With dead ends: 67 [2024-11-13 13:43:59,993 INFO L226 Difference]: Without dead ends: 60 [2024-11-13 13:43:59,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:43:59,995 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 49 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:43:59,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 124 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:43:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-13 13:44:00,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-13 13:44:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.255813953488372) internal successors, (54), 44 states have internal predecessors, (54), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:44:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2024-11-13 13:44:00,012 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 33 [2024-11-13 13:44:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:44:00,012 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2024-11-13 13:44:00,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 13:44:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2024-11-13 13:44:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 13:44:00,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:44:00,014 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:44:00,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:44:00,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:44:00,215 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:44:00,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:44:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash 693646063, now seen corresponding path program 1 times [2024-11-13 13:44:00,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:44:00,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512737339] [2024-11-13 13:44:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:44:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:44:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:44:00,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73835942] [2024-11-13 13:44:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:44:00,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:44:00,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:44:00,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:44:00,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:44:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:00,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:44:00,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:44:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:44:00,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:44:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:44:00,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:44:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512737339] [2024-11-13 13:44:00,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:44:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73835942] [2024-11-13 13:44:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73835942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:44:00,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:44:00,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-11-13 13:44:00,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31343826] [2024-11-13 13:44:00,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:44:00,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:44:00,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:44:00,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:44:00,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:44:00,597 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:44:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:44:00,742 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-11-13 13:44:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:44:00,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-11-13 13:44:00,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:44:00,744 INFO L225 Difference]: With dead ends: 67 [2024-11-13 13:44:00,744 INFO L226 Difference]: Without dead ends: 60 [2024-11-13 13:44:00,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:44:00,747 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:44:00,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:44:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-13 13:44:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2024-11-13 13:44:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:44:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-13 13:44:00,774 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 39 [2024-11-13 13:44:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:44:00,774 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-13 13:44:00,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:44:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-13 13:44:00,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 13:44:00,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:44:00,777 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:44:00,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:44:00,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:44:00,978 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:44:00,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:44:00,979 INFO L85 PathProgramCache]: Analyzing trace with hash 630684156, now seen corresponding path program 1 times [2024-11-13 13:44:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:44:00,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576929197] [2024-11-13 13:44:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:44:00,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:44:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:44:01,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227868885] [2024-11-13 13:44:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:44:01,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:44:01,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:44:01,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:44:01,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:44:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:01,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 13:44:01,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:44:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:44:01,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:44:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:44:09,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:44:09,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576929197] [2024-11-13 13:44:09,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:44:09,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227868885] [2024-11-13 13:44:09,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227868885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:44:09,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:44:09,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2024-11-13 13:44:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785361254] [2024-11-13 13:44:09,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:44:09,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:44:09,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:44:09,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:44:09,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:44:09,719 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 13:44:17,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:44:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:44:20,111 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2024-11-13 13:44:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:44:20,111 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 42 [2024-11-13 13:44:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:44:20,113 INFO L225 Difference]: With dead ends: 86 [2024-11-13 13:44:20,113 INFO L226 Difference]: Without dead ends: 84 [2024-11-13 13:44:20,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:44:20,115 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:44:20,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 195 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 13:44:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-13 13:44:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-13 13:44:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 62 states have internal predecessors, (73), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 13:44:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 99 transitions. [2024-11-13 13:44:20,137 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 99 transitions. Word has length 42 [2024-11-13 13:44:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:44:20,137 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 99 transitions. [2024-11-13 13:44:20,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 13:44:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 99 transitions. [2024-11-13 13:44:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 13:44:20,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:44:20,139 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:44:20,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:44:20,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:44:20,344 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:44:20,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:44:20,345 INFO L85 PathProgramCache]: Analyzing trace with hash -392591568, now seen corresponding path program 2 times [2024-11-13 13:44:20,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:44:20,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725041562] [2024-11-13 13:44:20,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:44:20,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:44:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:21,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:44:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:21,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:44:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:21,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 13:44:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:21,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 13:44:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:21,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 13:44:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:21,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 13:44:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:44:21,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:44:21,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725041562] [2024-11-13 13:44:21,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725041562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:44:21,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736157703] [2024-11-13 13:44:21,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:44:21,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:44:21,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:44:21,226 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:44:21,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:44:21,300 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:44:21,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:44:21,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:44:21,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:44:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:44:21,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:44:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:44:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736157703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:44:21,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:44:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 16 [2024-11-13 13:44:21,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005404713] [2024-11-13 13:44:21,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:44:21,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 13:44:21,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:44:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 13:44:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:44:21,932 INFO L87 Difference]: Start difference. First operand 82 states and 99 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 13:44:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:44:22,381 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2024-11-13 13:44:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:44:22,382 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) Word has length 51 [2024-11-13 13:44:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:44:22,384 INFO L225 Difference]: With dead ends: 106 [2024-11-13 13:44:22,384 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 13:44:22,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:44:22,387 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:44:22,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 142 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:44:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 13:44:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 13:44:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:44:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 13:44:22,393 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2024-11-13 13:44:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:44:22,393 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 13:44:22,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 13:44:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 13:44:22,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 13:44:22,398 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:44:22,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 13:44:22,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:44:22,602 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:44:22,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 13:44:23,684 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:44:23,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:44:23 BoogieIcfgContainer [2024-11-13 13:44:23,725 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:44:23,726 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:44:23,726 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:44:23,726 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:44:23,727 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:45" (3/4) ... [2024-11-13 13:44:23,730 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:44:23,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-13 13:44:23,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-13 13:44:23,747 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-13 13:44:23,747 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 13:44:23,747 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 13:44:23,747 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 13:44:23,853 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:44:23,853 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:44:23,853 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:44:23,854 INFO L158 Benchmark]: Toolchain (without parser) took 38877.29ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 45.7MB in the end (delta: 46.7MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2024-11-13 13:44:23,854 INFO L158 Benchmark]: CDTParser took 1.12ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:44:23,855 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.94ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 81.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:44:23,855 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.70ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:44:23,855 INFO L158 Benchmark]: Boogie Preprocessor took 40.19ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:44:23,856 INFO L158 Benchmark]: RCFGBuilder took 415.88ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 69.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:44:23,856 INFO L158 Benchmark]: TraceAbstraction took 37924.39ms. Allocated memory is still 117.4MB. Free memory was 68.3MB in the beginning and 50.4MB in the end (delta: 17.9MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2024-11-13 13:44:23,856 INFO L158 Benchmark]: Witness Printer took 127.23ms. Allocated memory is still 117.4MB. Free memory was 50.4MB in the beginning and 45.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:44:23,858 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.94ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 81.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.70ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.19ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 415.88ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 69.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 37924.39ms. Allocated memory is still 117.4MB. Free memory was 68.3MB in the beginning and 50.4MB in the end (delta: 17.9MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 127.23ms. Allocated memory is still 117.4MB. Free memory was 50.4MB in the beginning and 45.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.7s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 115 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 841 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 673 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 700 IncrementalHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 168 mSDtfsCounter, 700 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 500 GetRequests, 391 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=7, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 21.5s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 534 ConstructedInterpolants, 1 QuantifiedInterpolants, 2669 SizeOfPredicates, 13 NumberOfNonLiveVariables, 567 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 319/371 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((((y == ((b >= 0) ? (b / 2) : ((b / 2) - 1))) && (a <= 5)) && (b <= 5)) && (1 <= b)) && (x == ((long long) 2 * a))) && (z == 0)) && (0 <= a)) && (((b >= 0) ? (b % 2) : ((b % 2) + 2)) != 1)) || (((((((0 <= y) && (a <= 5)) && (b <= 5)) && (1 <= b)) && ((z + ((__int128) x * y)) == ((long long) a * b))) && (0 <= a)) && ((((1 + ((y >= 0) ? (y / 2) : ((y / 2) - 1))) >= 0) ? ((1 + ((y >= 0) ? (y / 2) : ((y / 2) - 1))) / 2) : (((1 + ((y >= 0) ? (y / 2) : ((y / 2) - 1))) / 2) - 1)) == 0))) || (((((((b == y) && (a <= 5)) && (b <= 5)) && (1 <= b)) && (z == 0)) && (0 <= a)) && (a == x))) || (((((((((((long long) -1 + b) >= 0) ? (((long long) -1 + b) / 2) : ((((long long) -1 + b) / 2) - 1)) == y) && (a <= 5)) && (b <= 5)) && (1 <= b)) && ((z + ((__int128) x * y)) == ((long long) a * b))) && (x == ((long long) 2 * a))) && (0 <= a))) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-13 13:44:23,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4acaf43f-460b-4abd-9c1b-eba019949c82/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 Result: TRUE