./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-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 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_geo2-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 50e0d41004ce88a8f3ef708f136426d09103c1930174c9041afa0700d3101d58 --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-27b4987-m [2024-09-21 12:37:38,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 12:37:38,271 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 12:37:38,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 12:37:38,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 12:37:38,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 12:37:38,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 12:37:38,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 12:37:38,309 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 12:37:38,310 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 12:37:38,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 12:37:38,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 12:37:38,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 12:37:38,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 12:37:38,312 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 12:37:38,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 12:37:38,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 12:37:38,313 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 12:37:38,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 12:37:38,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 12:37:38,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 12:37:38,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 12:37:38,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 12:37:38,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 12:37:38,319 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 12:37:38,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 12:37:38,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 12:37:38,320 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 12:37:38,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 12:37:38,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 12:37:38,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 12:37:38,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 12:37:38,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:37:38,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 12:37:38,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 12:37:38,321 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 12:37:38,321 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 12:37:38,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 12:37:38,322 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 12:37:38,325 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 12:37:38,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 12:37:38,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 12:37:38,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50e0d41004ce88a8f3ef708f136426d09103c1930174c9041afa0700d3101d58 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 12:37:38,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 12:37:38,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 12:37:38,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 12:37:38,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 12:37:38,605 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 12:37:38,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll.c [2024-09-21 12:37:40,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 12:37:40,279 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 12:37:40,279 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll.c [2024-09-21 12:37:40,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bb9066eb9/e0e8e390eb154b40af40716d094edf33/FLAGb3e1d76b0 [2024-09-21 12:37:40,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bb9066eb9/e0e8e390eb154b40af40716d094edf33 [2024-09-21 12:37:40,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 12:37:40,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 12:37:40,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 12:37:40,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 12:37:40,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 12:37:40,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283f9194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40, skipping insertion in model container [2024-09-21 12:37:40,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,346 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 12:37:40,500 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_geo2-ll.c[1055,1068] [2024-09-21 12:37:40,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:37:40,523 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 12:37:40,538 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_geo2-ll.c[1055,1068] [2024-09-21 12:37:40,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:37:40,564 INFO L204 MainTranslator]: Completed translation [2024-09-21 12:37:40,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40 WrapperNode [2024-09-21 12:37:40,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 12:37:40,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 12:37:40,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 12:37:40,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 12:37:40,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,584 INFO L138 Inliner]: procedures = 16, calls = 51, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 12:37:40,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 12:37:40,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 12:37:40,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 12:37:40,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 12:37:40,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,614 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 5, 7, 2, 7, 4]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 2, 2, 1, 1, 2]. [2024-09-21 12:37:40,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,615 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 12:37:40,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 12:37:40,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 12:37:40,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 12:37:40,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (1/1) ... [2024-09-21 12:37:40,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:37:40,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:37:40,670 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) [2024-09-21 12:37:40,702 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 [2024-09-21 12:37:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 12:37:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 12:37:40,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 12:37:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 12:37:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-21 12:37:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-21 12:37:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-21 12:37:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-21 12:37:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 12:37:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-09-21 12:37:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-09-21 12:37:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 12:37:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 12:37:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-21 12:37:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-21 12:37:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-21 12:37:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-21 12:37:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-21 12:37:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-21 12:37:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 12:37:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 12:37:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-21 12:37:40,908 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 12:37:40,910 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 12:37:41,092 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-21 12:37:41,093 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 12:37:41,113 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 12:37:41,113 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 12:37:41,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:37:41 BoogieIcfgContainer [2024-09-21 12:37:41,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 12:37:41,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 12:37:41,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 12:37:41,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 12:37:41,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:37:40" (1/3) ... [2024-09-21 12:37:41,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b401fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:37:41, skipping insertion in model container [2024-09-21 12:37:41,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:40" (2/3) ... [2024-09-21 12:37:41,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b401fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:37:41, skipping insertion in model container [2024-09-21 12:37:41,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:37:41" (3/3) ... [2024-09-21 12:37:41,122 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo2-ll.c [2024-09-21 12:37:41,139 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 12:37:41,139 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 12:37:41,190 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 12:37:41,196 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;@5037c84c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 12:37:41,196 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 12:37:41,200 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) [2024-09-21 12:37:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-21 12:37:41,207 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:37:41,210 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:37:41,210 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:37:41,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:37:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash 784733954, now seen corresponding path program 1 times [2024-09-21 12:37:41,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:37:41,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308529957] [2024-09-21 12:37:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:37:41,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:37:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:37:41,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229875528] [2024-09-21 12:37:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:37:41,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:37:41,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:37:41,423 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) [2024-09-21 12:37:41,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 12:37:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:37:41,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-21 12:37:41,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:37:41,645 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 [2024-09-21 12:37:41,658 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 [2024-09-21 12:37:41,740 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 15 treesize of output 7 [2024-09-21 12:37:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:37:41,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 12:37:41,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:37:41,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308529957] [2024-09-21 12:37:41,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:37:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229875528] [2024-09-21 12:37:41,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229875528] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:37:41,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:37:41,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-21 12:37:41,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104727043] [2024-09-21 12:37:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:37:41,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-21 12:37:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:37:41,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-21 12:37:41,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-21 12:37:41,826 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) [2024-09-21 12:37:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:37:42,012 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-09-21 12:37:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-21 12:37:42,015 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 [2024-09-21 12:37:42,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:37:42,021 INFO L225 Difference]: With dead ends: 58 [2024-09-21 12:37:42,022 INFO L226 Difference]: Without dead ends: 34 [2024-09-21 12:37:42,025 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 [2024-09-21 12:37:42,028 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 [2024-09-21 12:37:42,029 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] [2024-09-21 12:37:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-21 12:37:42,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-21 12:37:42,071 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) [2024-09-21 12:37:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-21 12:37:42,075 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 12 [2024-09-21 12:37:42,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:37:42,076 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-21 12:37:42,076 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) [2024-09-21 12:37:42,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:37:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-21 12:37:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-21 12:37:42,079 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:37:42,079 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:37:42,099 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-21 12:37:42,280 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 [2024-09-21 12:37:42,281 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:37:42,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:37:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash 646538741, now seen corresponding path program 1 times [2024-09-21 12:37:42,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:37:42,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155919195] [2024-09-21 12:37:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:37:42,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:37:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:37:42,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515627643] [2024-09-21 12:37:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:37:42,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:37:42,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:37:42,422 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) [2024-09-21 12:37:42,423 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 12:37:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:37:42,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-21 12:37:42,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:37:42,646 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 [2024-09-21 12:37:42,652 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 [2024-09-21 12:37:42,662 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 [2024-09-21 12:37:42,807 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 25 treesize of output 17 [2024-09-21 12:37:42,817 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 [2024-09-21 12:37:42,888 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 19 treesize of output 11 [2024-09-21 12:37:42,896 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 35 treesize of output 19 [2024-09-21 12:37:42,906 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 24 treesize of output 12 [2024-09-21 12:37:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:37:42,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:37:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:37:52,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:37:52,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155919195] [2024-09-21 12:37:52,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:37:52,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515627643] [2024-09-21 12:37:52,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515627643] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:37:52,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 12:37:52,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-09-21 12:37:52,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871673544] [2024-09-21 12:37:52,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 12:37:52,070 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-21 12:37:52,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:37:52,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-21 12:37:52,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=290, Unknown=2, NotChecked=0, Total=342 [2024-09-21 12:37:52,072 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 19 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 9 states have call successors, (10), 8 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 12:38:02,744 WARN L293 SmtUtils]: Spent 8.65s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-21 12:38:11,843 WARN L293 SmtUtils]: Spent 7.34s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-21 12:38:22,629 WARN L293 SmtUtils]: Spent 8.79s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-21 12:38:39,891 WARN L293 SmtUtils]: Spent 11.13s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-21 12:38:44,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:38:48,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:38:52,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:38:56,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:39:20,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:39:24,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:39:53,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:39:57,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:01,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:05,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:09,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:13,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:17,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:21,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:25,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:29,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:33,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:37,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-21 12:40:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:40:37,487 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2024-09-21 12:40:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-21 12:40:37,488 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 9 states have call successors, (10), 8 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 [2024-09-21 12:40:37,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:40:37,491 INFO L225 Difference]: With dead ends: 77 [2024-09-21 12:40:37,491 INFO L226 Difference]: Without dead ends: 73 [2024-09-21 12:40:37,492 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 100.2s TimeCoverageRelationStatistics Valid=172, Invalid=807, Unknown=13, NotChecked=0, Total=992 [2024-09-21 12:40:37,493 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 28 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.9s IncrementalHoareTripleChecker+Time [2024-09-21 12:40:37,493 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 191 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 225 Invalid, 18 Unknown, 0 Unchecked, 73.9s Time] [2024-09-21 12:40:37,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-21 12:40:37,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-09-21 12:40:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 48 states have internal predecessors, (50), 14 states have call successors, (14), 11 states have call predecessors, (14), 12 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-21 12:40:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2024-09-21 12:40:37,543 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 22 [2024-09-21 12:40:37,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:40:37,544 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2024-09-21 12:40:37,544 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 9 states have call successors, (10), 8 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 12:40:37,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:40:37,545 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2024-09-21 12:40:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-21 12:40:37,545 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:40:37,545 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] [2024-09-21 12:40:37,564 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 12:40:37,746 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 [2024-09-21 12:40:37,747 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:40:37,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:40:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1703476452, now seen corresponding path program 1 times [2024-09-21 12:40:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:40:37,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232300660] [2024-09-21 12:40:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:40:37,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:40:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:40:37,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177114918] [2024-09-21 12:40:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:40:37,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:40:37,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:40:37,820 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) [2024-09-21 12:40:37,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 12:40:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:40:37,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-21 12:40:37,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:40:38,001 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 [2024-09-21 12:40:38,004 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 [2024-09-21 12:40:38,012 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 [2024-09-21 12:40:38,018 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 [2024-09-21 12:40:38,022 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 [2024-09-21 12:40:38,452 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 15 treesize of output 7 [2024-09-21 12:40:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:40:38,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:40:57,088 WARN L293 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-21 12:41:06,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:41:06,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232300660] [2024-09-21 12:41:06,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:41:06,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177114918] [2024-09-21 12:41:06,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177114918] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:41:06,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-21 12:41:06,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-09-21 12:41:06,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99693869] [2024-09-21 12:41:06,182 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-21 12:41:06,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-21 12:41:06,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:41:06,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-21 12:41:06,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-09-21 12:41:06,184 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 12:41:06,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:41:06,733 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2024-09-21 12:41:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-21 12:41:06,734 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2024-09-21 12:41:06,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:41:06,735 INFO L225 Difference]: With dead ends: 75 [2024-09-21 12:41:06,735 INFO L226 Difference]: Without dead ends: 67 [2024-09-21 12:41:06,735 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-09-21 12:41:06,736 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 12:41:06,736 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 56 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 12:41:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-21 12:41:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-09-21 12:41:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 45 states have internal predecessors, (46), 13 states have call successors, (13), 10 states have call predecessors, (13), 12 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-21 12:41:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2024-09-21 12:41:06,777 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 22 [2024-09-21 12:41:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:41:06,778 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2024-09-21 12:41:06,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 12:41:06,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:41:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2024-09-21 12:41:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-21 12:41:06,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:41:06,780 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] [2024-09-21 12:41:06,797 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 12:41:06,981 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 [2024-09-21 12:41:06,982 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:41:06,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:41:06,983 INFO L85 PathProgramCache]: Analyzing trace with hash 614548665, now seen corresponding path program 1 times [2024-09-21 12:41:06,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:41:06,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893959305] [2024-09-21 12:41:06,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:41:06,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:41:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:41:07,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409022702] [2024-09-21 12:41:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:41:07,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:41:07,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:41:07,044 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) [2024-09-21 12:41:07,045 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 12:41:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:41:07,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-21 12:41:07,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:41:07,217 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 [2024-09-21 12:41:07,221 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 [2024-09-21 12:41:07,338 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 [2024-09-21 12:41:07,392 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 13 treesize of output 9 [2024-09-21 12:41:08,213 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 25 treesize of output 17 [2024-09-21 12:41:09,115 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 57 treesize of output 45 [2024-09-21 12:41:09,124 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 60 treesize of output 40 [2024-09-21 12:41:09,131 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 57 treesize of output 33 [2024-09-21 12:41:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:41:11,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:41:19,843 WARN L293 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-09-21 12:41:29,995 WARN L293 SmtUtils]: Spent 8.92s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-09-21 12:41:41,310 WARN L854 $PredicateComparison]: unable to prove that (and (or (forall ((|v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4| Int)) (= 0 (mod (let ((.cse0 (select (select |c_#memory_int#4| |v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_4|)) (.cse1 (select (select |c_#memory_int#2| |v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4|))) (+ (* (select (select |c_#memory_int#1| |v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4|) 18446744073709551615 .cse0) (* 18446744073709551615 .cse1) (* .cse0 .cse1) 1)) 18446744073709551616))) (= (mod (let ((.cse2 (select (select |c_old(#memory_int#2)| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|)) (.cse3 (select (select |c_#memory_int#4| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|))) (+ (* .cse2 18446744073709551615) (* 18446744073709551615 .cse3 (select (select |c_old(#memory_int#1)| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|)) (* .cse2 .cse3) 1)) 18446744073709551616) 0)) (forall ((|v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4| Int)) (let ((.cse4 (select (select |c_#memory_int#4| |v_func_to_recursive_line_30_to_38_0_#in~z.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~z.offset_BEFORE_CALL_4|))) (or (not (= (mod (let ((.cse5 (select (select |c_old(#memory_int#2)| |v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4|))) (+ (* .cse4 .cse5) (* 18446744073709551615 .cse5) (* 18446744073709551615 .cse4 (select (select |c_old(#memory_int#1)| |v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4|)) 1)) 18446744073709551616) 0)) (= 0 (mod (let ((.cse6 (select (select |c_#memory_int#2| |v_func_to_recursive_line_30_to_38_0_#in~x.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~x.offset_BEFORE_CALL_4|))) (+ (* (select (select |c_#memory_int#1| |v_func_to_recursive_line_30_to_38_0_#in~y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_30_to_38_0_#in~y.offset_BEFORE_CALL_4|) 18446744073709551615 .cse4) (* 18446744073709551615 .cse6) (* .cse4 .cse6) 1)) 18446744073709551616)))))) is different from false [2024-09-21 12:41:49,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:41:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893959305] [2024-09-21 12:41:49,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:41:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409022702] [2024-09-21 12:41:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409022702] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:41:49,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-21 12:41:49,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-09-21 12:41:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993112478] [2024-09-21 12:41:49,041 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-21 12:41:49,041 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-21 12:41:49,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:41:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-21 12:41:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=400, Unknown=1, NotChecked=40, Total=506 [2024-09-21 12:41:49,042 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 12:41:53,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-21 12:41:54,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-21 12:41:58,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-21 12:41:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:41:58,653 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2024-09-21 12:41:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-21 12:41:58,654 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (7), 4 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 [2024-09-21 12:41:58,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:41:58,656 INFO L225 Difference]: With dead ends: 77 [2024-09-21 12:41:58,656 INFO L226 Difference]: Without dead ends: 65 [2024-09-21 12:41:58,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=131, Invalid=742, Unknown=1, NotChecked=56, Total=930 [2024-09-21 12:41:58,658 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-09-21 12:41:58,658 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 83 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 279 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2024-09-21 12:41:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-21 12:41:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-09-21 12:41:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.1) internal successors, (44), 43 states have internal predecessors, (44), 13 states have call successors, (13), 10 states have call predecessors, (13), 11 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-21 12:41:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-09-21 12:41:58,694 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 34 [2024-09-21 12:41:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:41:58,694 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-09-21 12:41:58,695 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 12:41:58,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:41:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-09-21 12:41:58,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-21 12:41:58,696 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:41:58,696 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] [2024-09-21 12:41:58,719 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 12:41:58,897 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 [2024-09-21 12:41:58,897 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:41:58,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:41:58,897 INFO L85 PathProgramCache]: Analyzing trace with hash -541688170, now seen corresponding path program 2 times [2024-09-21 12:41:58,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:41:58,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170880175] [2024-09-21 12:41:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:41:58,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:41:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:41:58,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220169691] [2024-09-21 12:41:58,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:41:58,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:41:58,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:41:58,976 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) [2024-09-21 12:41:58,979 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 12:41:59,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:41:59,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:41:59,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-09-21 12:41:59,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:41:59,492 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 [2024-09-21 12:41:59,494 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 [2024-09-21 12:41:59,708 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 [2024-09-21 12:41:59,748 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 13 treesize of output 9 [2024-09-21 12:42:11,371 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 33 treesize of output 28 [2024-09-21 12:42:16,573 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 57 treesize of output 45 [2024-09-21 12:42:16,579 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 85 treesize of output 49 [2024-09-21 12:42:16,583 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 32 [2024-09-21 12:42:17,476 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-21 12:42:17,476 INFO L327 TraceCheckSpWp]: Computing backward predicates...