./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 f1d7dc9d 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-f1d7dc9-m [2024-09-20 13:15:24,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:15:24,531 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:15:24,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:15:24,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:15:24,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:15:24,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:15:24,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:15:24,561 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:15:24,562 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:15:24,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:15:24,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:15:24,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:15:24,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:15:24,565 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:15:24,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:15:24,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:15:24,565 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:15:24,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:15:24,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:15:24,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:15:24,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:15:24,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:15:24,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:15:24,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:15:24,570 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:15:24,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:15:24,570 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:15:24,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:15:24,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:15:24,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:15:24,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:15:24,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:15:24,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:15:24,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:15:24,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:15:24,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:15:24,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:15:24,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:15:24,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:15:24,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:15:24,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:15:24,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50e0d41004ce88a8f3ef708f136426d09103c1930174c9041afa0700d3101d58 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 13:15:24,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:15:24,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:15:24,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:15:24,804 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:15:24,804 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:15:24,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll.c [2024-09-20 13:15:26,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:15:26,219 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:15:26,219 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll.c [2024-09-20 13:15:26,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/60e84fe80/9e9a968d92b14638b33fbe613429148e/FLAG3d7958e45 [2024-09-20 13:15:26,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/60e84fe80/9e9a968d92b14638b33fbe613429148e [2024-09-20 13:15:26,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:15:26,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 13:15:26,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:15:26,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:15:26,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:15:26,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779f85d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26, skipping insertion in model container [2024-09-20 13:15:26,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,665 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:15:26,779 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] [2024-09-20 13:15:26,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:15:26,803 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 13:15:26,812 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] [2024-09-20 13:15:26,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:15:26,828 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:15:26,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26 WrapperNode [2024-09-20 13:15:26,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:15:26,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:15:26,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:15:26,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:15:26,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,844 INFO L138 Inliner]: procedures = 16, calls = 51, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 13:15:26,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:15:26,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:15:26,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:15:26,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:15:26,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,866 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 4, 7, 2, 7, 5]. 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, 1, 1, 2, 2]. [2024-09-20 13:15:26,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:15:26,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:15:26,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:15:26,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:15:26,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (1/1) ... [2024-09-20 13:15:26,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:15:26,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:15:26,899 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) [2024-09-20 13:15:26,901 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 [2024-09-20 13:15:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:15:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 13:15:26,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 13:15:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 13:15:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-20 13:15:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 13:15:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-09-20 13:15:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:15:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-20 13:15:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-20 13:15:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 13:15:26,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 13:15:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-20 13:15:27,026 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:15:27,028 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:15:27,211 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-20 13:15:27,212 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:15:27,257 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:15:27,257 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 13:15:27,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:15:27 BoogieIcfgContainer [2024-09-20 13:15:27,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:15:27,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:15:27,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:15:27,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:15:27,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:15:26" (1/3) ... [2024-09-20 13:15:27,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5f3340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:15:27, skipping insertion in model container [2024-09-20 13:15:27,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:15:26" (2/3) ... [2024-09-20 13:15:27,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5f3340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:15:27, skipping insertion in model container [2024-09-20 13:15:27,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:15:27" (3/3) ... [2024-09-20 13:15:27,264 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo2-ll.c [2024-09-20 13:15:27,294 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:15:27,295 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 13:15:27,345 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:15:27,351 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;@16403ecb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:15:27,352 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 13:15:27,356 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) [2024-09-20 13:15:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 13:15:27,362 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:15:27,363 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:15:27,363 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:15:27,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:15:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash 784733954, now seen corresponding path program 1 times [2024-09-20 13:15:27,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:15:27,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116642822] [2024-09-20 13:15:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:15:27,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:15:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:15:27,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552511857] [2024-09-20 13:15:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:15:27,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:15:27,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:15:27,514 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) [2024-09-20 13:15:27,523 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:15:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:15:27,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-20 13:15:27,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:15:27,680 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 [2024-09-20 13:15:27,687 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 [2024-09-20 13:15:27,751 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 [2024-09-20 13:15:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:15:27,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:15:27,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:15:27,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116642822] [2024-09-20 13:15:27,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:15:27,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552511857] [2024-09-20 13:15:27,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552511857] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:15:27,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:15:27,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-20 13:15:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913140516] [2024-09-20 13:15:27,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:15:27,845 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 13:15:27,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:15:27,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 13:15:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:15:27,863 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) [2024-09-20 13:15:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:15:28,023 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-09-20 13:15:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 13:15:28,030 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 [2024-09-20 13:15:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:15:28,035 INFO L225 Difference]: With dead ends: 58 [2024-09-20 13:15:28,036 INFO L226 Difference]: Without dead ends: 34 [2024-09-20 13:15:28,038 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 [2024-09-20 13:15:28,041 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 [2024-09-20 13:15:28,042 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] [2024-09-20 13:15:28,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-20 13:15:28,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-20 13:15:28,081 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) [2024-09-20 13:15:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-20 13:15:28,084 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 12 [2024-09-20 13:15:28,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:15:28,085 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-20 13:15:28,085 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) [2024-09-20 13:15:28,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:15:28,086 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-20 13:15:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 13:15:28,087 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:15:28,087 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:15:28,100 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 13:15:28,288 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 [2024-09-20 13:15:28,289 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:15:28,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:15:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash 646538741, now seen corresponding path program 1 times [2024-09-20 13:15:28,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:15:28,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992423376] [2024-09-20 13:15:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:15:28,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:15:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:15:28,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552344801] [2024-09-20 13:15:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:15:28,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:15:28,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:15:28,372 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) [2024-09-20 13:15:28,373 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:15:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:15:28,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-20 13:15:28,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:15:28,539 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 [2024-09-20 13:15:28,543 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 [2024-09-20 13:15:28,546 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 [2024-09-20 13:15:28,651 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 [2024-09-20 13:15:28,658 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 [2024-09-20 13:15:28,725 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 28 treesize of output 16 [2024-09-20 13:15:28,731 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 [2024-09-20 13:15:28,734 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 31 treesize of output 15 [2024-09-20 13:15:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:15:28,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:15:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:15:38,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:15:38,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992423376] [2024-09-20 13:15:38,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:15:38,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552344801] [2024-09-20 13:15:38,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552344801] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:15:38,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:15:38,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-09-20 13:15:38,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216833891] [2024-09-20 13:15:38,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:15:38,034 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-20 13:15:38,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:15:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-20 13:15:38,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=290, Unknown=2, NotChecked=0, Total=342 [2024-09-20 13:15:38,036 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) [2024-09-20 13:15:42,475 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 [] [2024-09-20 13:16:15,660 WARN L293 SmtUtils]: Spent 19.49s 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) [2024-09-20 13:16:19,693 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int#5| c_func_to_recursive_line_30_to_38_0_~y.base) c_func_to_recursive_line_30_to_38_0_~y.offset)) (.cse0 (select (select |c_#memory_int#2| c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset)) (.cse2 (select (select |c_#memory_int#4| c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset)) (.cse3 (select (select |c_#memory_int#4| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|)) (.cse4 (select (select |c_#memory_int#2| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)) (.cse5 (select (select |c_#memory_int#5| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|))) (and (= (mod (+ (* 18446744073709551615 .cse0 .cse1) (* .cse0 .cse2) (* 18446744073709551615 .cse2) 1) 18446744073709551616) 0) (= (mod (+ (* 18446744073709551615 .cse3) (* 18446744073709551615 .cse4 .cse5) 1 (* .cse3 .cse4)) 18446744073709551616) 0) (= (mod (+ .cse0 (* 18446744073709551615 .cse0 .cse0 .cse1) (* .cse0 .cse0 .cse2) (* 18446744073709551615 .cse0 .cse2)) 18446744073709551616) 0) (= (mod (+ (* 18446744073709551615 |c_func_to_recursive_line_30_to_38_0_#t~mem7| |c_func_to_recursive_line_30_to_38_0_#t~mem8|) (* |c_func_to_recursive_line_30_to_38_0_#t~mem6| 18446744073709551615) (* |c_func_to_recursive_line_30_to_38_0_#t~mem4| |c_func_to_recursive_line_30_to_38_0_#t~mem5|) 1) 18446744073709551616) 0) (= (mod (+ (* 18446744073709551615 .cse3 .cse4) .cse4 (* .cse3 .cse4 .cse4) (* 18446744073709551615 .cse4 .cse4 .cse5)) 18446744073709551616) 0))) is different from false [2024-09-20 13:16:24,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:16:28,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:16:32,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:16:36,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:16:39,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:17:03,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:17:07,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:17:32,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:17:36,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:17:40,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:17:44,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:17:48,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:17:52,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:17:56,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:18:00,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:18:04,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:18:08,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:18:12,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:18:16,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:18:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:18:17,373 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2024-09-20 13:18:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-20 13:18:17,374 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 [2024-09-20 13:18:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:18:17,377 INFO L225 Difference]: With dead ends: 79 [2024-09-20 13:18:17,377 INFO L226 Difference]: Without dead ends: 75 [2024-09-20 13:18:17,378 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 87.2s TimeCoverageRelationStatistics Valid=166, Invalid=817, Unknown=13, NotChecked=60, Total=1056 [2024-09-20 13:18:17,378 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 59 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 21 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 81.3s IncrementalHoareTripleChecker+Time [2024-09-20 13:18:17,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 192 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 230 Invalid, 20 Unknown, 34 Unchecked, 81.3s Time] [2024-09-20 13:18:17,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-20 13:18:17,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-20 13:18:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 49 states have internal predecessors, (51), 14 states have call successors, (14), 12 states have call predecessors, (14), 11 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-20 13:18:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2024-09-20 13:18:17,402 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 22 [2024-09-20 13:18:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:18:17,403 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2024-09-20 13:18:17,403 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) [2024-09-20 13:18:17,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:18:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2024-09-20 13:18:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 13:18:17,404 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:18:17,404 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] [2024-09-20 13:18:17,422 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 13:18:17,608 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 [2024-09-20 13:18:17,609 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:18:17,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:18:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1703476452, now seen corresponding path program 1 times [2024-09-20 13:18:17,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:18:17,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606818529] [2024-09-20 13:18:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:18:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:18:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:18:17,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147678799] [2024-09-20 13:18:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:18:17,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:18:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:18:17,680 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) [2024-09-20 13:18:17,683 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:18:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:18:17,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-20 13:18:17,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:18:17,807 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 [2024-09-20 13:18:17,812 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 [2024-09-20 13:18:17,819 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 [2024-09-20 13:18:17,921 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 [2024-09-20 13:18:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:18:17,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:18:17,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:18:17,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606818529] [2024-09-20 13:18:17,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:18:17,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147678799] [2024-09-20 13:18:17,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147678799] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:18:17,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:18:17,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-20 13:18:17,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646110429] [2024-09-20 13:18:17,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:18:17,959 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 13:18:17,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:18:17,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 13:18:17,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:18:17,960 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2024-09-20 13:18:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:18:18,121 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2024-09-20 13:18:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 13:18:18,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2024-09-20 13:18:18,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:18:18,124 INFO L225 Difference]: With dead ends: 77 [2024-09-20 13:18:18,124 INFO L226 Difference]: Without dead ends: 69 [2024-09-20 13:18:18,124 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-20 13:18:18,125 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:18:18,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 49 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:18:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-20 13:18:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-09-20 13:18:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.119047619047619) internal successors, (47), 46 states have internal predecessors, (47), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-20 13:18:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2024-09-20 13:18:18,148 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 22 [2024-09-20 13:18:18,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:18:18,148 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2024-09-20 13:18:18,148 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2024-09-20 13:18:18,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:18:18,148 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2024-09-20 13:18:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-20 13:18:18,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:18:18,150 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] [2024-09-20 13:18:18,164 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 13:18:18,350 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 [2024-09-20 13:18:18,351 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:18:18,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:18:18,352 INFO L85 PathProgramCache]: Analyzing trace with hash 614548665, now seen corresponding path program 1 times [2024-09-20 13:18:18,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:18:18,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763431270] [2024-09-20 13:18:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:18:18,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:18:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:18:18,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999836555] [2024-09-20 13:18:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:18:18,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:18:18,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:18:18,442 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) [2024-09-20 13:18:18,445 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:18:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:18:18,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-20 13:18:18,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:18:18,647 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 [2024-09-20 13:18:18,760 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 8 treesize of output 1 [2024-09-20 13:18:18,771 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 8 treesize of output 1 [2024-09-20 13:18:23,212 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 51 treesize of output 35 [2024-09-20 13:18:23,217 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 36 treesize of output 28 [2024-09-20 13:18:23,221 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 39 treesize of output 23 [2024-09-20 13:18:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:18:25,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:18:33,719 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~x.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.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)) (= (mod (let ((.cse0 (select (select |c_#memory_int#4| |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|)) (.cse1 (select (select |c_#memory_int#2| |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|))) (+ (* 18446744073709551615 .cse0) (* .cse0 .cse1) 1 (* 18446744073709551615 .cse1 (select (select |c_#memory_int#5| |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|)))) 18446744073709551616) 0)) (= (mod (let ((.cse2 (select (select |c_#memory_int#2| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)) (.cse3 (select (select |c_old(#memory_int#4)| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|))) (+ (* .cse2 .cse3) (* 18446744073709551615 .cse2 (select (select |c_old(#memory_int#5)| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|)) (* 18446744073709551615 .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 ((.cse5 (select (select |c_#memory_int#2| |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 (= (mod (let ((.cse4 (select (select |c_#memory_int#4| |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|))) (+ (* 18446744073709551615 .cse4) (* .cse4 .cse5) 1 (* 18446744073709551615 .cse5 (select (select |c_#memory_int#5| |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|)))) 18446744073709551616) 0) (not (= (mod (let ((.cse6 (select (select |c_old(#memory_int#4)| |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|))) (+ (* .cse5 .cse6) (* 18446744073709551615 .cse5 (select (select |c_old(#memory_int#5)| |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 .cse6) 1)) 18446744073709551616) 0)))))) is different from false [2024-09-20 13:18:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:18:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763431270] [2024-09-20 13:18:41,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:18:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999836555] [2024-09-20 13:18:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999836555] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:18:41,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:18:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-20 13:18:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950328519] [2024-09-20 13:18:41,551 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-20 13:18:41,551 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 13:18:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:18:41,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 13:18:41,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=229, Unknown=1, NotChecked=30, Total=306 [2024-09-20 13:18:41,552 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-20 13:18:46,990 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 [] [2024-09-20 13:18:49,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 13:18:52,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:18:52,534 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2024-09-20 13:18:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 13:18:52,534 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2024-09-20 13:18:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:18:52,535 INFO L225 Difference]: With dead ends: 75 [2024-09-20 13:18:52,535 INFO L226 Difference]: Without dead ends: 53 [2024-09-20 13:18:52,535 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=106, Invalid=497, Unknown=1, NotChecked=46, Total=650 [2024-09-20 13:18:52,536 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-09-20 13:18:52,536 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 62 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2024-09-20 13:18:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-20 13:18:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2024-09-20 13:18:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 12 states have call successors, (12), 11 states have call predecessors, (12), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:18:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-09-20 13:18:52,550 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 34 [2024-09-20 13:18:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:18:52,551 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-09-20 13:18:52,551 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-20 13:18:52,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:18:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-09-20 13:18:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-20 13:18:52,552 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:18:52,552 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:18:52,567 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 13:18:52,756 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 [2024-09-20 13:18:52,756 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:18:52,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:18:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1730732978, now seen corresponding path program 2 times [2024-09-20 13:18:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:18:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949347346] [2024-09-20 13:18:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:18:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:18:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:18:52,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483421063] [2024-09-20 13:18:52,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:18:52,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:18:52,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:18:52,871 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) [2024-09-20 13:18:52,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:18:56,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:18:56,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:18:56,081 WARN L260 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 330 conjuncts are in the unsatisfiable core [2024-09-20 13:18:56,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:18:56,095 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 [2024-09-20 13:18:56,099 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 [2024-09-20 13:18:56,103 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 [2024-09-20 13:18:56,108 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 [2024-09-20 13:18:56,112 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 [2024-09-20 13:18:56,261 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 [2024-09-20 13:18:56,266 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 [2024-09-20 13:18:56,274 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 [2024-09-20 13:18:56,576 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 [2024-09-20 13:18:56,581 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 37 treesize of output 25 [2024-09-20 13:18:56,590 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 21 [2024-09-20 13:18:57,116 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 48 treesize of output 36 [2024-09-20 13:18:57,122 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 7 treesize of output 3 [2024-09-20 13:18:57,125 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 39 treesize of output 27 [2024-09-20 13:18:57,859 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 44 treesize of output 32 [2024-09-20 13:18:57,868 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 64 treesize of output 52 [2024-09-20 13:18:58,074 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 76 treesize of output 64 [2024-09-20 13:18:58,080 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 27 [2024-09-20 13:18:58,100 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 161 treesize of output 53 [2024-09-20 13:18:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:18:58,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:19:38,893 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int#5| c_func_to_recursive_line_30_to_38_0_~y.base) c_func_to_recursive_line_30_to_38_0_~y.offset)) (.cse0 (select (select |c_#memory_int#2| c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset)) (.cse2 (select (select |c_#memory_int#4| c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset))) (or (not (= (mod (+ (* 18446744073709551615 .cse0 .cse1) (* .cse0 .cse2) (* 18446744073709551615 .cse2) 1) 18446744073709551616) 0)) (= (mod (+ .cse0 (* 18446744073709551615 .cse0 .cse0 .cse1) (* .cse0 .cse0 .cse2) (* 18446744073709551615 .cse0 .cse2)) 18446744073709551616) 0))) is different from true [2024-09-20 13:19:51,494 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int#4| |c_func_to_recursive_line_30_to_38_0_#in~x.base|) |c_func_to_recursive_line_30_to_38_0_#in~x.offset|)) (.cse1 (select (select |c_#memory_int#2| |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 (select (select |c_#memory_int#5| |c_func_to_recursive_line_30_to_38_0_#in~y.base|) |c_func_to_recursive_line_30_to_38_0_#in~y.offset|))) (or (not (= (mod (+ (* 18446744073709551615 .cse0) (* 18446744073709551615 .cse1 .cse2) 1 (* .cse0 .cse1)) 18446744073709551616) 0)) (= (mod (+ (* 18446744073709551615 .cse0 .cse1) .cse1 (* .cse0 .cse1 .cse1) (* 18446744073709551615 .cse1 .cse1 .cse2)) 18446744073709551616) 0))) is different from true [2024-09-20 13:20:01,031 WARN L293 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)