./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad27d809606deb561fe152191ab0a1443c0552410f06ac9bb9a7a7bf17dec4e9 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:20:03,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:20:03,754 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:20:03,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:20:03,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:20:03,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:20:03,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:20:03,792 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:20:03,793 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:20:03,794 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:20:03,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:20:03,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:20:03,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:20:03,796 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:20:03,796 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:20:03,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:20:03,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:20:03,798 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:20:03,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:20:03,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:20:03,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:20:03,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:20:03,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:20:03,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:20:03,803 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:20:03,803 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:20:03,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:20:03,803 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:20:03,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:20:03,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:20:03,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:20:03,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:20:03,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:20:03,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:20:03,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:20:03,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:20:03,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:20:03,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:20:03,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:20:03,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:20:03,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:20:03,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:20:03,819 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad27d809606deb561fe152191ab0a1443c0552410f06ac9bb9a7a7bf17dec4e9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:20:04,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:20:04,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:20:04,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:20:04,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:20:04,067 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:20:04,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c [2024-09-25 00:20:05,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:20:05,673 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:20:05,674 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c [2024-09-25 00:20:05,680 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bc3eb80ce/71b2cf9edc464b7881981d9cfb0119d4/FLAG7eb28fac0 [2024-09-25 00:20:05,692 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bc3eb80ce/71b2cf9edc464b7881981d9cfb0119d4 [2024-09-25 00:20:05,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:20:05,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:20:05,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:20:05,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:20:05,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:20:05,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139cc639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05, skipping insertion in model container [2024-09-25 00:20:05,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:20:05,859 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c[983,996] [2024-09-25 00:20:05,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:20:05,882 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:20:05,891 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c[983,996] [2024-09-25 00:20:05,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:20:05,910 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:20:05,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05 WrapperNode [2024-09-25 00:20:05,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:20:05,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:20:05,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:20:05,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:20:05,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,939 INFO L138 Inliner]: procedures = 16, calls = 44, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:20:05,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:20:05,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:20:05,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:20:05,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:20:05,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,953 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,978 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 5, 10, 4]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 2, 2, 2]. [2024-09-25 00:20:05,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:20:05,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:20:05,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:20:05,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:20:05,991 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (1/1) ... [2024-09-25 00:20:05,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:20:06,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:20:06,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-25 00:20:06,030 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 00:20:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:20:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:20:06,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:20:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:20:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-25 00:20:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-25 00:20:06,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-25 00:20:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-25 00:20:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-25 00:20:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-25 00:20:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-25 00:20:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-25 00:20:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-25 00:20:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-25 00:20:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:20:06,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:20:06,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:20:06,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:20:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-25 00:20:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-25 00:20:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-25 00:20:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-25 00:20:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-25 00:20:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-09-25 00:20:06,075 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-09-25 00:20:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 00:20:06,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 00:20:06,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-25 00:20:06,171 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:20:06,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:20:06,348 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 00:20:06,348 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:20:06,370 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:20:06,371 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 00:20:06,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:06 BoogieIcfgContainer [2024-09-25 00:20:06,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:20:06,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:20:06,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:20:06,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:20:06,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:05" (1/3) ... [2024-09-25 00:20:06,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ea7df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:06, skipping insertion in model container [2024-09-25 00:20:06,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:05" (2/3) ... [2024-09-25 00:20:06,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ea7df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:06, skipping insertion in model container [2024-09-25 00:20:06,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:06" (3/3) ... [2024-09-25 00:20:06,380 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps2-ll.c [2024-09-25 00:20:06,393 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:20:06,394 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:20:06,450 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:20:06,458 INFO L336 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=All, 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;@7c0dfe0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:20:06,459 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:20:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:20:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-25 00:20:06,470 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:20:06,471 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:20:06,471 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:20:06,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash -216882462, now seen corresponding path program 1 times [2024-09-25 00:20:06,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:20:06,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178199985] [2024-09-25 00:20:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:06,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:20:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:20:06,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277583576] [2024-09-25 00:20:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:06,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:06,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:20:06,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:20:06,634 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:20:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:20:06,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-25 00:20:06,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:20:06,790 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 11 treesize of output 7 [2024-09-25 00:20:06,799 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 11 treesize of output 7 [2024-09-25 00:20:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:20:06,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:20:06,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:20:06,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178199985] [2024-09-25 00:20:06,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:20:06,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277583576] [2024-09-25 00:20:06,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277583576] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:20:06,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:20:06,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-25 00:20:06,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161151611] [2024-09-25 00:20:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:20:06,925 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-25 00:20:06,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:20:06,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-25 00:20:06,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-25 00:20:06,954 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 00:20:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:20:07,193 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-09-25 00:20:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 00:20:07,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-25 00:20:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:20:07,203 INFO L225 Difference]: With dead ends: 58 [2024-09-25 00:20:07,203 INFO L226 Difference]: Without dead ends: 34 [2024-09-25 00:20:07,206 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:20:07,214 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:20:07,215 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 116 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:20:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-25 00:20:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-25 00:20:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-25 00:20:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-25 00:20:07,259 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 12 [2024-09-25 00:20:07,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:20:07,259 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-25 00:20:07,261 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-25 00:20:07,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-25 00:20:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-25 00:20:07,262 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:20:07,262 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:20:07,278 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 00:20:07,463 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-09-25 00:20:07,464 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:20:07,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash 259702993, now seen corresponding path program 1 times [2024-09-25 00:20:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:20:07,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046948851] [2024-09-25 00:20:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:20:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:20:07,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087579044] [2024-09-25 00:20:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:07,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:07,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:20:07,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:20:07,574 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:20:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:20:07,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-25 00:20:07,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:20:07,690 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 11 treesize of output 7 [2024-09-25 00:20:07,696 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 11 treesize of output 7 [2024-09-25 00:20:07,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 15 [2024-09-25 00:20:07,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-09-25 00:20:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:20:07,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:20:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 00:20:08,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:20:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046948851] [2024-09-25 00:20:08,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:20:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087579044] [2024-09-25 00:20:08,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087579044] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:20:08,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:20:08,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2024-09-25 00:20:08,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499024191] [2024-09-25 00:20:08,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:20:08,168 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 00:20:08,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:20:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 00:20:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-09-25 00:20:08,172 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 00:20:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:20:08,546 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2024-09-25 00:20:08,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 00:20:08,547 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2024-09-25 00:20:08,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:20:08,549 INFO L225 Difference]: With dead ends: 61 [2024-09-25 00:20:08,549 INFO L226 Difference]: Without dead ends: 55 [2024-09-25 00:20:08,550 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-09-25 00:20:08,554 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:20:08,554 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 129 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:20:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-25 00:20:08,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2024-09-25 00:20:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.103448275862069) internal successors, (32), 31 states have internal predecessors, (32), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-25 00:20:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-09-25 00:20:08,576 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 22 [2024-09-25 00:20:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:20:08,576 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-09-25 00:20:08,577 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 00:20:08,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-09-25 00:20:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-25 00:20:08,579 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:20:08,579 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:20:08,593 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:20:08,782 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:08,783 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:20:08,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1228374235, now seen corresponding path program 1 times [2024-09-25 00:20:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:20:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872306895] [2024-09-25 00:20:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:20:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:20:08,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749805665] [2024-09-25 00:20:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:08,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:08,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:20:08,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:20:08,846 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:20:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:20:08,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 00:20:08,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:20:08,925 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 11 treesize of output 7 [2024-09-25 00:20:08,933 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 11 treesize of output 7 [2024-09-25 00:20:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:20:09,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:20:09,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:20:09,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872306895] [2024-09-25 00:20:09,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:20:09,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749805665] [2024-09-25 00:20:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749805665] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:20:09,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:20:09,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-25 00:20:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919597315] [2024-09-25 00:20:09,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:20:09,012 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 00:20:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:20:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 00:20:09,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-25 00:20:09,013 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 00:20:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:20:09,188 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2024-09-25 00:20:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 00:20:09,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 3 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 22 [2024-09-25 00:20:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:20:09,191 INFO L225 Difference]: With dead ends: 55 [2024-09-25 00:20:09,191 INFO L226 Difference]: Without dead ends: 47 [2024-09-25 00:20:09,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-09-25 00:20:09,196 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:20:09,196 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 52 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:20:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-25 00:20:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-25 00:20:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-25 00:20:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2024-09-25 00:20:09,219 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 22 [2024-09-25 00:20:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:20:09,219 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2024-09-25 00:20:09,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 00:20:09,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2024-09-25 00:20:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-25 00:20:09,220 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:20:09,220 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:20:09,243 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 00:20:09,421 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-09-25 00:20:09,425 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:20:09,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash -364189453, now seen corresponding path program 1 times [2024-09-25 00:20:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:20:09,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160821401] [2024-09-25 00:20:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:20:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:20:09,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031727642] [2024-09-25 00:20:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:09,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:09,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:20:09,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:20:09,502 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:20:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:20:09,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-25 00:20:09,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:20:09,627 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 11 treesize of output 7 [2024-09-25 00:20:09,630 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 11 treesize of output 7 [2024-09-25 00:20:09,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 15 [2024-09-25 00:20:09,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-09-25 00:20:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-25 00:20:10,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:20:10,962 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 52 treesize of output 44 [2024-09-25 00:20:10,971 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 44 treesize of output 20 [2024-09-25 00:20:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:20:11,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160821401] [2024-09-25 00:20:11,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:20:11,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031727642] [2024-09-25 00:20:11,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031727642] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:20:11,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:20:11,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-25 00:20:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544811720] [2024-09-25 00:20:11,339 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 00:20:11,339 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 00:20:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:20:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 00:20:11,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2024-09-25 00:20:11,347 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 00:20:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:20:11,796 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2024-09-25 00:20:11,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:20:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 34 [2024-09-25 00:20:11,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:20:11,800 INFO L225 Difference]: With dead ends: 53 [2024-09-25 00:20:11,800 INFO L226 Difference]: Without dead ends: 43 [2024-09-25 00:20:11,801 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2024-09-25 00:20:11,801 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:20:11,802 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 67 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:20:11,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-25 00:20:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-25 00:20:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-25 00:20:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-09-25 00:20:11,823 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 34 [2024-09-25 00:20:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:20:11,824 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-09-25 00:20:11,824 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 00:20:11,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-09-25 00:20:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-25 00:20:11,825 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:20:11,825 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:20:11,846 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 00:20:12,025 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:12,026 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:20:12,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1780089717, now seen corresponding path program 2 times [2024-09-25 00:20:12,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:20:12,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204853512] [2024-09-25 00:20:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:20:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:20:12,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616941688] [2024-09-25 00:20:12,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:20:12,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:12,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:20:12,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:20:12,099 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 00:20:12,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:20:12,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:20:12,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-09-25 00:20:12,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:20:12,216 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 15 treesize of output 1 [2024-09-25 00:20:12,219 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 11 treesize of output 7 [2024-09-25 00:20:12,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 13 [2024-09-25 00:20:12,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-09-25 00:20:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-25 00:20:12,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:20:14,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:20:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204853512] [2024-09-25 00:20:14,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:20:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616941688] [2024-09-25 00:20:14,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616941688] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:20:14,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:20:14,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-25 00:20:14,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573368740] [2024-09-25 00:20:14,030 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 00:20:14,031 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 00:20:14,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:20:14,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 00:20:14,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2024-09-25 00:20:14,032 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 16 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-25 00:20:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:20:14,511 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2024-09-25 00:20:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 00:20:14,512 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 46 [2024-09-25 00:20:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:20:14,513 INFO L225 Difference]: With dead ends: 51 [2024-09-25 00:20:14,513 INFO L226 Difference]: Without dead ends: 45 [2024-09-25 00:20:14,513 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2024-09-25 00:20:14,516 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:20:14,516 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:20:14,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-25 00:20:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-25 00:20:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-25 00:20:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-25 00:20:14,527 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 46 [2024-09-25 00:20:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:20:14,527 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-25 00:20:14,528 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-25 00:20:14,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:14,528 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-25 00:20:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-25 00:20:14,529 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:20:14,529 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:20:14,543 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 00:20:14,733 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:14,733 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:20:14,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:14,734 INFO L85 PathProgramCache]: Analyzing trace with hash -438461533, now seen corresponding path program 3 times [2024-09-25 00:20:14,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:20:14,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479238017] [2024-09-25 00:20:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:14,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:20:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:20:14,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918105201] [2024-09-25 00:20:14,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:20:14,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:20:14,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:20:14,806 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 00:20:14,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 00:20:14,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:20:14,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-09-25 00:20:14,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:20:14,993 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 11 treesize of output 7 [2024-09-25 00:20:14,997 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 11 treesize of output 7 [2024-09-25 00:20:15,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-09-25 00:20:15,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-09-25 00:20:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-25 00:20:15,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:20:16,481 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 26 treesize of output 14 [2024-09-25 00:20:16,506 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 14 treesize of output 10 [2024-09-25 00:20:42,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:20:42,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479238017] [2024-09-25 00:20:42,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:20:42,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918105201] [2024-09-25 00:20:42,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918105201] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:20:42,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:20:42,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-25 00:20:42,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379170054] [2024-09-25 00:20:42,763 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 00:20:42,763 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 00:20:42,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:20:42,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 00:20:42,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=440, Unknown=2, NotChecked=0, Total=506 [2024-09-25 00:20:42,764 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 16 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 7 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-25 00:20:43,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:20:43,064 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2024-09-25 00:20:43,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:20:43,065 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 7 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 58 [2024-09-25 00:20:43,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:20:43,066 INFO L225 Difference]: With dead ends: 53 [2024-09-25 00:20:43,066 INFO L226 Difference]: Without dead ends: 47 [2024-09-25 00:20:43,066 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=93, Invalid=607, Unknown=2, NotChecked=0, Total=702 [2024-09-25 00:20:43,067 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:20:43,067 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 99 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:20:43,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-25 00:20:43,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-25 00:20:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-25 00:20:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-09-25 00:20:43,102 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 58 [2024-09-25 00:20:43,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:20:43,103 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-09-25 00:20:43,103 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 7 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-25 00:20:43,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-09-25 00:20:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-25 00:20:43,105 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:20:43,106 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:20:43,131 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 00:20:43,306 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:43,307 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:20:43,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2052151749, now seen corresponding path program 4 times [2024-09-25 00:20:43,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:20:43,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432656543] [2024-09-25 00:20:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:20:43,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:20:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:20:43,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270369749] [2024-09-25 00:20:43,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:20:43,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:43,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:20:43,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:20:43,375 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 00:20:43,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:20:43,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:20:43,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-09-25 00:20:43,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:20:43,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 17 treesize of output 9 [2024-09-25 00:20:43,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 13 [2024-09-25 00:20:44,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 38 [2024-09-25 00:20:44,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 46 treesize of output 26 [2024-09-25 00:20:44,295 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 68 treesize of output 36 [2024-09-25 00:20:44,301 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 34 treesize of output 22 [2024-09-25 00:20:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 58 proven. 32 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-25 00:20:44,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:20:51,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-25 00:20:51,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 216 treesize of output 211 [2024-09-25 00:20:51,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-25 00:20:51,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 136 [2024-09-25 00:20:52,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:20:52,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432656543] [2024-09-25 00:20:52,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:20:52,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270369749] [2024-09-25 00:20:52,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270369749] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:20:52,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:20:52,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-09-25 00:20:52,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498413110] [2024-09-25 00:20:52,987 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 00:20:52,988 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 00:20:52,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:20:52,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 00:20:52,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2024-09-25 00:20:52,989 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 20 states, 15 states have (on average 2.0) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-25 00:20:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:20:53,452 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2024-09-25 00:20:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 00:20:53,453 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 2.0) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) Word has length 70 [2024-09-25 00:20:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:20:53,453 INFO L225 Difference]: With dead ends: 47 [2024-09-25 00:20:53,453 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 00:20:53,454 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2024-09-25 00:20:53,455 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:20:53,455 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 83 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:20:53,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 00:20:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 00:20:53,455 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) [2024-09-25 00:20:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 00:20:53,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2024-09-25 00:20:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:20:53,456 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 00:20:53,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 2.0) internal successors, (30), 17 states have internal predecessors, (30), 8 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-25 00:20:53,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:20:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 00:20:53,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 00:20:53,459 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 00:20:53,475 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 00:20:53,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:20:53,663 INFO L408 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2024-09-25 00:20:53,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 00:21:03,155 WARN L293 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 155 DAG size of output: 34 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-25 00:21:04,896 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 00:21:04,903 WARN L155 FloydHoareUtils]: Requires clause for main contained old-variable. Original clause: (and (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#3| |old(#memory_int#3)|)) Eliminated clause: true [2024-09-25 00:21:04,909 WARN L155 FloydHoareUtils]: Requires clause for func_to_recursive_line_26_to_34_0 contained old-variable. Original clause: (and (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#3| |old(#memory_int#3)|) (= (* 2 (select (select |old(#memory_int#2)| |func_to_recursive_line_26_to_34_0_#in~x.base|) |func_to_recursive_line_26_to_34_0_#in~x.offset|)) (let ((.cse0 (select (select |old(#memory_int#3)| |func_to_recursive_line_26_to_34_0_#in~y.base|) |func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ .cse0 (* .cse0 .cse0))))) Eliminated clause: (= (let ((.cse0 (select (select |#memory_int#3| |func_to_recursive_line_26_to_34_0_#in~y.base|) |func_to_recursive_line_26_to_34_0_#in~y.offset|))) (+ (* .cse0 .cse0) .cse0)) (* 2 (select (select |#memory_int#2| |func_to_recursive_line_26_to_34_0_#in~x.base|) |func_to_recursive_line_26_to_34_0_#in~x.offset|))) [2024-09-25 00:21:04,911 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-09-25 00:21:04,912 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-09-25 00:21:04,912 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-09-25 00:21:04,913 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-09-25 00:21:04,913 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-09-25 00:21:04,913 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-09-25 00:21:04,913 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-09-25 00:21:04,913 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-09-25 00:21:04,913 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-09-25 00:21:04,914 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#2 [2024-09-25 00:21:04,914 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-25 00:21:04,914 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~x!base,]]] [2024-09-25 00:21:04,914 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-09-25 00:21:04,914 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-09-25 00:21:04,914 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#2 [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~x!base,]]] [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#2 [2024-09-25 00:21:04,915 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~x!base,]]] [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~y!base,]]] [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~y!base,]]] [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#3 [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] [2024-09-25 00:21:04,916 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~y!base,]]] [2024-09-25 00:21:04,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:21:04 BoogieIcfgContainer [2024-09-25 00:21:04,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 00:21:04,921 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 00:21:04,923 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 00:21:04,924 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 00:21:04,924 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:06" (3/4) ... [2024-09-25 00:21:04,926 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 00:21:04,981 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 00:21:04,983 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 00:21:04,983 INFO L158 Benchmark]: Toolchain (without parser) took 59287.35ms. Allocated memory was 182.5MB in the beginning and 281.0MB in the end (delta: 98.6MB). Free memory was 125.6MB in the beginning and 192.5MB in the end (delta: -66.8MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2024-09-25 00:21:04,983 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:21:04,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.00ms. Allocated memory is still 182.5MB. Free memory was 125.2MB in the beginning and 113.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 00:21:04,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.01ms. Allocated memory is still 182.5MB. Free memory was 113.9MB in the beginning and 112.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:21:04,989 INFO L158 Benchmark]: Boogie Preprocessor took 48.29ms. Allocated memory is still 182.5MB. Free memory was 112.7MB in the beginning and 110.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:21:04,989 INFO L158 Benchmark]: RCFGBuilder took 382.65ms. Allocated memory is still 182.5MB. Free memory was 110.6MB in the beginning and 94.6MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-25 00:21:04,990 INFO L158 Benchmark]: TraceAbstraction took 58546.92ms. Allocated memory was 182.5MB in the beginning and 281.0MB in the end (delta: 98.6MB). Free memory was 94.2MB in the beginning and 194.5MB in the end (delta: -100.4MB). Peak memory consumption was 112.1MB. Max. memory is 16.1GB. [2024-09-25 00:21:04,990 INFO L158 Benchmark]: Witness Printer took 61.43ms. Allocated memory is still 281.0MB. Free memory was 194.5MB in the beginning and 192.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:21:04,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.00ms. Allocated memory is still 182.5MB. Free memory was 125.2MB in the beginning and 113.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.01ms. Allocated memory is still 182.5MB. Free memory was 113.9MB in the beginning and 112.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.29ms. Allocated memory is still 182.5MB. Free memory was 112.7MB in the beginning and 110.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 382.65ms. Allocated memory is still 182.5MB. Free memory was 110.6MB in the beginning and 94.6MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 58546.92ms. Allocated memory was 182.5MB in the beginning and 281.0MB in the end (delta: 98.6MB). Free memory was 94.2MB in the beginning and 194.5MB in the end (delta: -100.4MB). Peak memory consumption was 112.1MB. Max. memory is 16.1GB. * Witness Printer took 61.43ms. Allocated memory is still 281.0MB. Free memory was 194.5MB in the beginning and 192.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~x!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~x!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~x!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~y!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~y!base,]]] * 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: 37]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.2s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 638 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 538 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1236 IncrementalHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 100 mSDtfsCounter, 1236 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 213 SyntacticMatches, 7 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 29.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=2, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 41.6s InterpolantComputationTime, 528 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 278 ConstructedInterpolants, 18 QuantifiedInterpolants, 4155 SizeOfPredicates, 134 NumberOfNonLiveVariables, 1922 ConjunctsInSsa, 556 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 182/270 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 31]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-25 00:21:05,106 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE