./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:55:53,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:55:53,291 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:55:53,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:55:53,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:55:53,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:55:53,319 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:55:53,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:55:53,320 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:55:53,320 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:55:53,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:55:53,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:55:53,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:55:53,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:55:53,321 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:55:53,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:55:53,321 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:55:53,321 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:55:53,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:55:53,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:55:53,322 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:55:53,322 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:55:53,322 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:55:53,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:55:53,322 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:55:53,322 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:55:53,322 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:55:53,323 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:55:53,323 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:55:53,323 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:55:53,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:55:53,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:55:53,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:55:53,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:53,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:55:53,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:55:53,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:55:53,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:55:53,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:53,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:55:53,324 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:55:53,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:55:53,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:55:53,326 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:55:53,327 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:55:53,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:55:53,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:55:53,327 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_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a [2024-11-28 03:55:53,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:55:53,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:55:53,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:55:53,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:55:53,608 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:55:53,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-11-28 03:55:56,653 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/data/71f14a980/ca210afad1db44118ac9b8b4b599152a/FLAG5456eaa5d [2024-11-28 03:55:56,903 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:55:56,903 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-11-28 03:55:56,913 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/data/71f14a980/ca210afad1db44118ac9b8b4b599152a/FLAG5456eaa5d [2024-11-28 03:55:56,931 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/data/71f14a980/ca210afad1db44118ac9b8b4b599152a [2024-11-28 03:55:56,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:55:56,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:55:56,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:55:56,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:55:56,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:55:56,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:55:56" (1/1) ... [2024-11-28 03:55:56,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37dd6eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:56, skipping insertion in model container [2024-11-28 03:55:56,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:55:56" (1/1) ... [2024-11-28 03:55:56,956 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:55:57,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:55:57,117 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:55:57,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:55:57,165 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:55:57,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57 WrapperNode [2024-11-28 03:55:57,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:55:57,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:55:57,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:55:57,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:55:57,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,209 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 34 [2024-11-28 03:55:57,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:55:57,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:55:57,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:55:57,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:55:57,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,243 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 03:55:57,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,254 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:55:57,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:55:57,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:55:57,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:55:57,262 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (1/1) ... [2024-11-28 03:55:57,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:57,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:57,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:55:57,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:55:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:55:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:55:57,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:55:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:55:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:55:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-11-28 03:55:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-11-28 03:55:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:55:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:55:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:55:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:55:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:55:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:55:57,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:55:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:55:57,420 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:55:57,422 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:55:57,629 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-28 03:55:57,629 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:55:57,640 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:55:57,640 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:55:57,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:55:57 BoogieIcfgContainer [2024-11-28 03:55:57,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:55:57,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:55:57,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:55:57,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:55:57,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:55:56" (1/3) ... [2024-11-28 03:55:57,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b99b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:55:57, skipping insertion in model container [2024-11-28 03:55:57,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:57" (2/3) ... [2024-11-28 03:55:57,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b99b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:55:57, skipping insertion in model container [2024-11-28 03:55:57,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:55:57" (3/3) ... [2024-11-28 03:55:57,652 INFO L128 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2024-11-28 03:55:57,670 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:55:57,673 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elimination_max_rec.c that has 4 procedures, 54 locations, 1 initial locations, 0 loop locations, and 13 error locations. [2024-11-28 03:55:57,732 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:55:57,748 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=None, 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;@1e66838c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:55:57,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-28 03:55:57,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 44 states have internal predecessors, (48), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:55:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:55:57,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:57,765 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:57,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:55:57,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:57,772 INFO L85 PathProgramCache]: Analyzing trace with hash -356805850, now seen corresponding path program 1 times [2024-11-28 03:55:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418090307] [2024-11-28 03:55:57,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:57,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:57,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418090307] [2024-11-28 03:55:57,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418090307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:57,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:57,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:55:57,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126956988] [2024-11-28 03:55:57,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:57,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:55:57,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:57,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:55:57,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:55:57,977 INFO L87 Difference]: Start difference. First operand has 54 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 44 states have internal predecessors, (48), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:55:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:57,993 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2024-11-28 03:55:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:55:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-28 03:55:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:57,999 INFO L225 Difference]: With dead ends: 53 [2024-11-28 03:55:57,999 INFO L226 Difference]: Without dead ends: 51 [2024-11-28 03:55:58,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:55:58,003 INFO L435 NwaCegarLoop]: 57 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, 57 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:58,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:55:58,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-28 03:55:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-28 03:55:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 41 states have internal predecessors, (43), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:55:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-28 03:55:58,039 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 16 [2024-11-28 03:55:58,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:58,039 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-28 03:55:58,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:55:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-28 03:55:58,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:55:58,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:58,041 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:58,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:55:58,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:55:58,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:58,042 INFO L85 PathProgramCache]: Analyzing trace with hash -98640412, now seen corresponding path program 1 times [2024-11-28 03:55:58,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:58,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134454421] [2024-11-28 03:55:58,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:58,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:58,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:58,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134454421] [2024-11-28 03:55:58,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134454421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:58,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:58,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:55:58,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099351955] [2024-11-28 03:55:58,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:58,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:55:58,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:58,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:55:58,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:55:58,517 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:55:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:58,719 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2024-11-28 03:55:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:55:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-28 03:55:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:58,722 INFO L225 Difference]: With dead ends: 96 [2024-11-28 03:55:58,722 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 03:55:58,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:55:58,723 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 42 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:58,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 258 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:55:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 03:55:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2024-11-28 03:55:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.5333333333333334) internal successors, (69), 58 states have internal predecessors, (69), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 03:55:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2024-11-28 03:55:58,745 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 16 [2024-11-28 03:55:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:58,745 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2024-11-28 03:55:58,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:55:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2024-11-28 03:55:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:55:58,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:58,750 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:58,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:55:58,750 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:55:58,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:58,751 INFO L85 PathProgramCache]: Analyzing trace with hash -100057725, now seen corresponding path program 1 times [2024-11-28 03:55:58,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:58,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230964681] [2024-11-28 03:55:58,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:58,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:58,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:58,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230964681] [2024-11-28 03:55:58,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230964681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:58,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:58,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:55:58,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745851756] [2024-11-28 03:55:58,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:58,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:55:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:58,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:55:58,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:55:58,862 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:55:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:58,876 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2024-11-28 03:55:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:55:58,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-28 03:55:58,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:58,878 INFO L225 Difference]: With dead ends: 73 [2024-11-28 03:55:58,878 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 03:55:58,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:55:58,879 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:58,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:55:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 03:55:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-28 03:55:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 45 states have (on average 1.511111111111111) internal successors, (68), 57 states have internal predecessors, (68), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 03:55:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2024-11-28 03:55:58,889 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 16 [2024-11-28 03:55:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:58,889 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2024-11-28 03:55:58,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:55:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2024-11-28 03:55:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:55:58,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:58,890 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:58,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:55:58,891 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:55:58,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:58,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1193177863, now seen corresponding path program 1 times [2024-11-28 03:55:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:58,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920973528] [2024-11-28 03:55:58,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:58,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:58,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920973528] [2024-11-28 03:55:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920973528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:58,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:58,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:55:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719539434] [2024-11-28 03:55:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:58,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:55:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:58,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:55:58,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:55:58,968 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:55:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:58,998 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-11-28 03:55:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:55:58,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-28 03:55:58,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:58,999 INFO L225 Difference]: With dead ends: 72 [2024-11-28 03:55:58,999 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 03:55:59,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:55:59,000 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 1 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:59,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 135 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:55:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 03:55:59,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-28 03:55:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 45 states have (on average 1.488888888888889) internal successors, (67), 56 states have internal predecessors, (67), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 03:55:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2024-11-28 03:55:59,012 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 17 [2024-11-28 03:55:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:59,015 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2024-11-28 03:55:59,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:55:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2024-11-28 03:55:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:55:59,017 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:59,017 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:59,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:55:59,018 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:55:59,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1666191867, now seen corresponding path program 1 times [2024-11-28 03:55:59,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:59,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199757175] [2024-11-28 03:55:59,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:59,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:59,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:59,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199757175] [2024-11-28 03:55:59,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199757175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:59,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:55:59,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131332834] [2024-11-28 03:55:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:59,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:55:59,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:59,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:55:59,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:55:59,136 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:55:59,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:59,198 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2024-11-28 03:55:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:55:59,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-28 03:55:59,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:59,199 INFO L225 Difference]: With dead ends: 71 [2024-11-28 03:55:59,199 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 03:55:59,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:55:59,200 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:59,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:55:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 03:55:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-28 03:55:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 55 states have internal predecessors, (66), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 03:55:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2024-11-28 03:55:59,216 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 18 [2024-11-28 03:55:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:59,217 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2024-11-28 03:55:59,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:55:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2024-11-28 03:55:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:55:59,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:59,218 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:59,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:55:59,218 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:55:59,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:59,219 INFO L85 PathProgramCache]: Analyzing trace with hash -833058710, now seen corresponding path program 1 times [2024-11-28 03:55:59,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:59,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019450686] [2024-11-28 03:55:59,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:59,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:55:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019450686] [2024-11-28 03:55:59,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019450686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:59,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:59,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:55:59,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168520298] [2024-11-28 03:55:59,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:59,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:55:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:59,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:55:59,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:55:59,400 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:55:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:59,538 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2024-11-28 03:55:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:55:59,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-28 03:55:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:59,540 INFO L225 Difference]: With dead ends: 71 [2024-11-28 03:55:59,540 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 03:55:59,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:55:59,543 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:59,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 103 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:55:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 03:55:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2024-11-28 03:55:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.288888888888889) internal successors, (58), 51 states have internal predecessors, (58), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 03:55:59,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-28 03:55:59,552 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 19 [2024-11-28 03:55:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:59,553 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-28 03:55:59,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:55:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-28 03:55:59,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:55:59,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:59,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:59,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:55:59,554 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting checkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:55:59,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:59,555 INFO L85 PathProgramCache]: Analyzing trace with hash -833058709, now seen corresponding path program 1 times [2024-11-28 03:55:59,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:59,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193028765] [2024-11-28 03:55:59,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:59,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:00,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193028765] [2024-11-28 03:56:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193028765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:00,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:00,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:56:00,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731526740] [2024-11-28 03:56:00,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:00,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:56:00,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:00,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:56:00,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:56:00,176 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:56:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:00,561 INFO L93 Difference]: Finished difference Result 94 states and 116 transitions. [2024-11-28 03:56:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:56:00,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-28 03:56:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:00,562 INFO L225 Difference]: With dead ends: 94 [2024-11-28 03:56:00,562 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 03:56:00,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:56:00,563 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 35 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:00,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 198 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:56:00,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 03:56:00,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2024-11-28 03:56:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 65 states have internal predecessors, (76), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 03:56:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2024-11-28 03:56:00,571 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 19 [2024-11-28 03:56:00,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:00,571 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2024-11-28 03:56:00,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:56:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2024-11-28 03:56:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:56:00,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:00,572 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:00,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:56:00,572 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:00,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:00,573 INFO L85 PathProgramCache]: Analyzing trace with hash -112340278, now seen corresponding path program 1 times [2024-11-28 03:56:00,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:00,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555175819] [2024-11-28 03:56:00,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:00,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:00,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555175819] [2024-11-28 03:56:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555175819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:00,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:56:00,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344780959] [2024-11-28 03:56:00,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:00,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:56:00,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:00,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:56:00,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:56:00,676 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:56:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:00,729 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2024-11-28 03:56:00,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:56:00,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-28 03:56:00,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:00,734 INFO L225 Difference]: With dead ends: 85 [2024-11-28 03:56:00,735 INFO L226 Difference]: Without dead ends: 77 [2024-11-28 03:56:00,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:56:00,736 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:00,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:56:00,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-28 03:56:00,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-28 03:56:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 58 states have internal predecessors, (68), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 03:56:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2024-11-28 03:56:00,749 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 19 [2024-11-28 03:56:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:00,750 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2024-11-28 03:56:00,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:56:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2024-11-28 03:56:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:56:00,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:00,751 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:00,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:56:00,751 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting checkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:00,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash -55016226, now seen corresponding path program 1 times [2024-11-28 03:56:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:00,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744206274] [2024-11-28 03:56:00,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:01,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:01,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744206274] [2024-11-28 03:56:01,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744206274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:01,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:01,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:56:01,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897786321] [2024-11-28 03:56:01,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:01,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:56:01,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:01,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:56:01,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:56:01,215 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:56:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:01,525 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2024-11-28 03:56:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:56:01,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-28 03:56:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:01,528 INFO L225 Difference]: With dead ends: 89 [2024-11-28 03:56:01,528 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 03:56:01,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:56:01,529 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:01,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 175 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:56:01,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 03:56:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2024-11-28 03:56:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 58 states have internal predecessors, (65), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 03:56:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2024-11-28 03:56:01,542 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 20 [2024-11-28 03:56:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:01,543 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2024-11-28 03:56:01,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:56:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2024-11-28 03:56:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 03:56:01,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:01,548 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:01,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:56:01,548 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:01,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash -775521803, now seen corresponding path program 1 times [2024-11-28 03:56:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:01,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467558187] [2024-11-28 03:56:01,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:01,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467558187] [2024-11-28 03:56:01,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467558187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:01,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585094662] [2024-11-28 03:56:01,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:01,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:01,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:01,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:01,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:56:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:01,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:56:01,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:02,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:56:02,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585094662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:02,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:56:02,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2024-11-28 03:56:02,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638110331] [2024-11-28 03:56:02,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:02,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:56:02,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:02,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:56:02,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:56:02,157 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:56:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:02,372 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2024-11-28 03:56:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:56:02,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-28 03:56:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:02,374 INFO L225 Difference]: With dead ends: 106 [2024-11-28 03:56:02,375 INFO L226 Difference]: Without dead ends: 106 [2024-11-28 03:56:02,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:56:02,376 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 69 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:02,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 222 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:56:02,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-28 03:56:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 81. [2024-11-28 03:56:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 61 states have internal predecessors, (68), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 03:56:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2024-11-28 03:56:02,392 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 28 [2024-11-28 03:56:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:02,392 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2024-11-28 03:56:02,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:56:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2024-11-28 03:56:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 03:56:02,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:02,393 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:02,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:56:02,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:02,599 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting checkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:02,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash -935123270, now seen corresponding path program 1 times [2024-11-28 03:56:02,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:02,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610539515] [2024-11-28 03:56:02,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:02,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:56:03,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:03,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610539515] [2024-11-28 03:56:03,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610539515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:03,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500326347] [2024-11-28 03:56:03,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:03,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:03,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:03,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:03,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:56:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:03,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:56:03,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:03,504 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:56:03,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500326347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:03,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:56:03,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2024-11-28 03:56:03,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120544138] [2024-11-28 03:56:03,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:03,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:56:03,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:03,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:56:03,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:56:03,506 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:56:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:04,114 INFO L93 Difference]: Finished difference Result 141 states and 178 transitions. [2024-11-28 03:56:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:56:04,116 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2024-11-28 03:56:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:04,117 INFO L225 Difference]: With dead ends: 141 [2024-11-28 03:56:04,117 INFO L226 Difference]: Without dead ends: 141 [2024-11-28 03:56:04,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:56:04,119 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 124 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:04,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 226 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:56:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-28 03:56:04,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 109. [2024-11-28 03:56:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 81 states have internal predecessors, (94), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-28 03:56:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 135 transitions. [2024-11-28 03:56:04,136 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 135 transitions. Word has length 31 [2024-11-28 03:56:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:04,136 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 135 transitions. [2024-11-28 03:56:04,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:56:04,136 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 135 transitions. [2024-11-28 03:56:04,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 03:56:04,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:04,137 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:04,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:56:04,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:04,338 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting checkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:04,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1075949679, now seen corresponding path program 1 times [2024-11-28 03:56:04,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818097132] [2024-11-28 03:56:04,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:04,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:56:04,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:04,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818097132] [2024-11-28 03:56:04,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818097132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:04,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174867715] [2024-11-28 03:56:04,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:04,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:04,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:04,736 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:04,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:56:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:04,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 03:56:04,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:05,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:05,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-28 03:56:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:56:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174867715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:56:05,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:56:05,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2024-11-28 03:56:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845036175] [2024-11-28 03:56:05,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:05,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:56:05,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:05,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:56:05,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:56:05,786 INFO L87 Difference]: Start difference. First operand 109 states and 135 transitions. Second operand has 28 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 03:56:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:07,968 INFO L93 Difference]: Finished difference Result 144 states and 177 transitions. [2024-11-28 03:56:07,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:56:07,969 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 32 [2024-11-28 03:56:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:07,971 INFO L225 Difference]: With dead ends: 144 [2024-11-28 03:56:07,971 INFO L226 Difference]: Without dead ends: 144 [2024-11-28 03:56:07,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=413, Invalid=1843, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:56:07,973 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 208 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:07,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 803 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:56:07,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-28 03:56:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2024-11-28 03:56:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 75 states have (on average 1.24) internal successors, (93), 80 states have internal predecessors, (93), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-28 03:56:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 134 transitions. [2024-11-28 03:56:07,991 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 134 transitions. Word has length 32 [2024-11-28 03:56:07,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:07,991 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 134 transitions. [2024-11-28 03:56:07,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 03:56:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 134 transitions. [2024-11-28 03:56:07,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 03:56:07,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:07,993 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:08,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:56:08,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:08,194 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting checkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:08,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:08,194 INFO L85 PathProgramCache]: Analyzing trace with hash 760407167, now seen corresponding path program 1 times [2024-11-28 03:56:08,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:08,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975089200] [2024-11-28 03:56:08,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:08,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:56:08,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:08,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975089200] [2024-11-28 03:56:08,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975089200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:08,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263681343] [2024-11-28 03:56:08,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:08,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:08,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:08,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:08,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:56:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:08,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:56:08,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:56:08,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:09,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-28 03:56:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:56:09,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263681343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:56:09,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:56:09,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-28 03:56:09,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056416483] [2024-11-28 03:56:09,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:09,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:56:09,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:09,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:56:09,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:56:09,401 INFO L87 Difference]: Start difference. First operand 108 states and 134 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 9 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 03:56:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:10,197 INFO L93 Difference]: Finished difference Result 134 states and 166 transitions. [2024-11-28 03:56:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:56:10,200 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 9 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) Word has length 33 [2024-11-28 03:56:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:10,202 INFO L225 Difference]: With dead ends: 134 [2024-11-28 03:56:10,202 INFO L226 Difference]: Without dead ends: 134 [2024-11-28 03:56:10,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:56:10,208 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 99 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:10,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 350 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:56:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-28 03:56:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 107. [2024-11-28 03:56:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 79 states have internal predecessors, (88), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-28 03:56:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2024-11-28 03:56:10,221 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 33 [2024-11-28 03:56:10,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:10,221 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2024-11-28 03:56:10,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 9 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 03:56:10,222 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2024-11-28 03:56:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:56:10,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:10,226 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:10,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:56:10,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:10,427 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting checkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:10,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:10,427 INFO L85 PathProgramCache]: Analyzing trace with hash 606846912, now seen corresponding path program 1 times [2024-11-28 03:56:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401205278] [2024-11-28 03:56:10,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:10,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:56:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401205278] [2024-11-28 03:56:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401205278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890720018] [2024-11-28 03:56:10,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:10,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:10,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:10,845 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:10,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:56:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:10,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:56:10,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:11,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:11,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2024-11-28 03:56:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:56:12,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890720018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:56:12,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:56:12,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 35 [2024-11-28 03:56:12,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233564942] [2024-11-28 03:56:12,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:12,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 03:56:12,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:12,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 03:56:12,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1134, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:56:12,069 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand has 36 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 30 states have internal predecessors, (56), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 03:56:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:14,060 INFO L93 Difference]: Finished difference Result 183 states and 224 transitions. [2024-11-28 03:56:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:56:14,060 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 30 states have internal predecessors, (56), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 35 [2024-11-28 03:56:14,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:14,062 INFO L225 Difference]: With dead ends: 183 [2024-11-28 03:56:14,062 INFO L226 Difference]: Without dead ends: 183 [2024-11-28 03:56:14,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=588, Invalid=3572, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 03:56:14,064 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 343 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:14,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 552 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:56:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-28 03:56:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 130. [2024-11-28 03:56:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 92 states have (on average 1.141304347826087) internal successors, (105), 95 states have internal predecessors, (105), 23 states have call successors, (23), 11 states have call predecessors, (23), 13 states have return successors, (27), 23 states have call predecessors, (27), 20 states have call successors, (27) [2024-11-28 03:56:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2024-11-28 03:56:14,082 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 35 [2024-11-28 03:56:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:14,082 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2024-11-28 03:56:14,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 30 states have internal predecessors, (56), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 03:56:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2024-11-28 03:56:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 03:56:14,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:14,084 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:14,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:56:14,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:14,285 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:14,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash -205014331, now seen corresponding path program 1 times [2024-11-28 03:56:14,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:14,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341006247] [2024-11-28 03:56:14,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:56:14,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:14,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341006247] [2024-11-28 03:56:14,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341006247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:14,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52109266] [2024-11-28 03:56:14,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:14,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:14,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:14,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:14,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:56:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:14,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 03:56:14,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:14,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-11-28 03:56:15,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2024-11-28 03:56:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:15,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:19,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52109266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:19,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:56:19,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 24 [2024-11-28 03:56:19,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242282541] [2024-11-28 03:56:19,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:19,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:56:19,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:19,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:56:19,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:56:19,352 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand has 24 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 7 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 03:56:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:19,760 INFO L93 Difference]: Finished difference Result 132 states and 155 transitions. [2024-11-28 03:56:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:56:19,760 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 7 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 40 [2024-11-28 03:56:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:19,761 INFO L225 Difference]: With dead ends: 132 [2024-11-28 03:56:19,761 INFO L226 Difference]: Without dead ends: 123 [2024-11-28 03:56:19,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:56:19,762 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:19,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 236 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:56:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-28 03:56:19,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 65. [2024-11-28 03:56:19,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-28 03:56:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2024-11-28 03:56:19,768 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 40 [2024-11-28 03:56:19,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:19,768 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2024-11-28 03:56:19,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 7 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 03:56:19,769 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2024-11-28 03:56:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 03:56:19,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:19,771 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:19,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:56:19,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:56:19,975 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting checkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:19,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash 98562051, now seen corresponding path program 1 times [2024-11-28 03:56:19,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:19,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705855525] [2024-11-28 03:56:19,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:19,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 52 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-28 03:56:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:20,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705855525] [2024-11-28 03:56:20,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705855525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:20,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422816460] [2024-11-28 03:56:20,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:20,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:20,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:20,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:20,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:56:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:20,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 03:56:20,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 32 proven. 38 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:56:21,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:22,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422816460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:22,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:56:22,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 34 [2024-11-28 03:56:22,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991693847] [2024-11-28 03:56:22,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:22,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 03:56:22,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:22,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 03:56:22,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:56:22,215 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 35 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 16 states have call successors, (21), 8 states have call predecessors, (21), 4 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-28 03:56:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:27,245 INFO L93 Difference]: Finished difference Result 392 states and 512 transitions. [2024-11-28 03:56:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-28 03:56:27,246 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 16 states have call successors, (21), 8 states have call predecessors, (21), 4 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 89 [2024-11-28 03:56:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:27,249 INFO L225 Difference]: With dead ends: 392 [2024-11-28 03:56:27,249 INFO L226 Difference]: Without dead ends: 392 [2024-11-28 03:56:27,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4481 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1532, Invalid=14724, Unknown=0, NotChecked=0, Total=16256 [2024-11-28 03:56:27,253 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 528 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2614 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:27,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1866 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2614 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:56:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-28 03:56:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 189. [2024-11-28 03:56:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 133 states have (on average 1.112781954887218) internal successors, (148), 135 states have internal predecessors, (148), 37 states have call successors, (37), 11 states have call predecessors, (37), 18 states have return successors, (56), 42 states have call predecessors, (56), 36 states have call successors, (56) [2024-11-28 03:56:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 241 transitions. [2024-11-28 03:56:27,274 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 241 transitions. Word has length 89 [2024-11-28 03:56:27,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:27,274 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 241 transitions. [2024-11-28 03:56:27,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 16 states have call successors, (21), 8 states have call predecessors, (21), 4 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-28 03:56:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 241 transitions. [2024-11-28 03:56:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 03:56:27,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:27,276 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:27,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:56:27,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:27,481 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting checkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:27,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:27,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2042001657, now seen corresponding path program 1 times [2024-11-28 03:56:27,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:27,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451474365] [2024-11-28 03:56:27,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:27,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 03:56:27,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:27,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451474365] [2024-11-28 03:56:27,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451474365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:27,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734616005] [2024-11-28 03:56:27,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:27,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:27,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:27,790 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:27,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:56:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:27,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 03:56:27,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 25 proven. 38 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 03:56:28,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734616005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:29,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:56:29,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20] total 28 [2024-11-28 03:56:29,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156972710] [2024-11-28 03:56:29,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:29,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:56:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:29,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:56:29,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=977, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 03:56:29,149 INFO L87 Difference]: Start difference. First operand 189 states and 241 transitions. Second operand has 28 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 13 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-28 03:56:31,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:31,042 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2024-11-28 03:56:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 03:56:31,043 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 13 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) Word has length 89 [2024-11-28 03:56:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:31,044 INFO L225 Difference]: With dead ends: 135 [2024-11-28 03:56:31,044 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 03:56:31,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=510, Invalid=3396, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 03:56:31,046 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 129 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:31,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 570 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:56:31,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 03:56:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2024-11-28 03:56:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 91 states have (on average 1.032967032967033) internal successors, (94), 92 states have internal predecessors, (94), 21 states have call successors, (21), 12 states have call predecessors, (21), 15 states have return successors, (26), 23 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-28 03:56:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2024-11-28 03:56:31,058 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 89 [2024-11-28 03:56:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:31,059 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2024-11-28 03:56:31,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 23 states have internal predecessors, (85), 13 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-28 03:56:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2024-11-28 03:56:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 03:56:31,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:31,061 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:31,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:56:31,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:56:31,261 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting checkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2024-11-28 03:56:31,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash -213600667, now seen corresponding path program 2 times [2024-11-28 03:56:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:31,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822542024] [2024-11-28 03:56:31,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:56:31,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:31,300 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:56:31,300 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:56:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:56:31,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:31,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822542024] [2024-11-28 03:56:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822542024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:31,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501508467] [2024-11-28 03:56:31,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:56:31,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:31,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:31,819 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:31,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:56:31,913 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:56:31,913 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:56:31,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 03:56:31,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:56:32,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:32,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501508467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:32,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:56:32,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 26 [2024-11-28 03:56:32,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801650098] [2024-11-28 03:56:32,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:56:32,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:56:32,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:32,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:56:32,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:56:32,977 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 27 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 12 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-28 03:56:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:34,066 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2024-11-28 03:56:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:56:34,067 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 12 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) Word has length 65 [2024-11-28 03:56:34,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:34,067 INFO L225 Difference]: With dead ends: 131 [2024-11-28 03:56:34,067 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 03:56:34,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=316, Invalid=2234, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:56:34,068 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 90 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:34,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 461 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:56:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 03:56:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 03:56:34,069 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) [2024-11-28 03:56:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 03:56:34,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2024-11-28 03:56:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:34,070 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 03:56:34,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 12 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-28 03:56:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 03:56:34,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 03:56:34,074 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (12 of 13 remaining) [2024-11-28 03:56:34,074 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (11 of 13 remaining) [2024-11-28 03:56:34,074 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (10 of 13 remaining) [2024-11-28 03:56:34,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (9 of 13 remaining) [2024-11-28 03:56:34,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location checkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2024-11-28 03:56:34,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location checkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2024-11-28 03:56:34,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location checkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2024-11-28 03:56:34,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location checkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2024-11-28 03:56:34,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location checkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2024-11-28 03:56:34,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location checkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2024-11-28 03:56:34,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location checkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2024-11-28 03:56:34,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location checkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2024-11-28 03:56:34,076 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2024-11-28 03:56:34,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:56:34,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:56:34,280 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:34,283 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:56:34,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:56:34 BoogieIcfgContainer [2024-11-28 03:56:34,286 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:56:34,287 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:56:34,287 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:56:34,287 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:56:34,288 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:55:57" (3/4) ... [2024-11-28 03:56:34,293 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:56:34,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-28 03:56:34,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2024-11-28 03:56:34,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-28 03:56:34,309 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-11-28 03:56:34,309 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-28 03:56:34,309 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 03:56:34,309 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 03:56:34,402 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:56:34,402 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:56:34,402 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:56:34,403 INFO L158 Benchmark]: Toolchain (without parser) took 37469.20ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 93.1MB in the beginning and 94.3MB in the end (delta: -1.2MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2024-11-28 03:56:34,404 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 72.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:56:34,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.20ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 81.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:56:34,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.03ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:56:34,405 INFO L158 Benchmark]: Boogie Preprocessor took 47.38ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.3MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:56:34,405 INFO L158 Benchmark]: RCFGBuilder took 380.22ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 65.3MB in the end (delta: 14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:56:34,405 INFO L158 Benchmark]: TraceAbstraction took 36643.09ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 64.7MB in the beginning and 99.3MB in the end (delta: -34.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:56:34,406 INFO L158 Benchmark]: Witness Printer took 115.75ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 94.3MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:56:34,408 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 72.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.20ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 81.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.03ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.38ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.3MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 380.22ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 65.3MB in the end (delta: 14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 36643.09ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 64.7MB in the beginning and 99.3MB in the end (delta: -34.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 115.75ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 94.3MB in the end (delta: 4.9MB). 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: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 41]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 5]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 36.6s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1785 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1771 mSDsluCounter, 6620 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5753 mSDsCounter, 803 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7540 IncrementalHoareTripleChecker+Invalid, 8343 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 803 mSolverCounterUnsat, 867 mSDtfsCounter, 7540 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 979 GetRequests, 468 SyntacticMatches, 13 SemanticMatches, 498 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7083 ImplicationChecksByTransitivity, 18.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=16, InterpolantAutomatonStates: 330, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 485 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 1044 NumberOfCodeBlocks, 1044 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1114 ConstructedInterpolants, 52 QuantifiedInterpolants, 6190 SizeOfPredicates, 78 NumberOfNonLiveVariables, 1964 ConjunctsInSsa, 273 ConjunctsInUnsatCore, 30 InterpolantComputations, 11 PerfectInterpolantSequences, 414/656 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 03:56:34,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7309b0a1-54eb-482d-bd37-b05f40c83bec/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE