./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 ca4ee3dd 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-ca4ee3d-m [2024-09-20 19:58:56,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:58:56,500 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:58:56,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:58:56,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:58:56,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:58:56,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:58:56,548 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:58:56,549 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:58:56,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:58:56,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:58:56,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:58:56,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:58:56,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:58:56,553 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:58:56,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:58:56,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:58:56,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:58:56,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:58:56,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:58:56,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:58:56,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:58:56,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:58:56,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:58:56,556 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:58:56,556 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:58:56,556 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:58:56,556 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:58:56,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:58:56,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:58:56,557 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:58:56,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:58:56,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:58:56,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:58:56,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:58:56,558 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:58:56,558 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:58:56,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:58:56,559 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:58:56,559 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:58:56,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:58:56,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:58:56,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50e0d41004ce88a8f3ef708f136426d09103c1930174c9041afa0700d3101d58 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:58:56,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:58:56,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:58:56,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:58:56,772 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:58:56,772 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:58:56,773 INFO L431 ainManager$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 19:58:57,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:58:58,127 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:58:58,127 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll.c [2024-09-20 19:58:58,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/1988484c6/2cee9ad768964493a7a29a7e8b4fceb9/FLAG310fd2c6f [2024-09-20 19:58:58,554 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/1988484c6/2cee9ad768964493a7a29a7e8b4fceb9 [2024-09-20 19:58:58,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:58:58,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:58:58,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:58:58,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:58:58,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:58:58,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4a25de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58, skipping insertion in model container [2024-09-20 19:58:58,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,583 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:58:58,698 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 19:58:58,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:58:58,715 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:58:58,724 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 19:58:58,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:58:58,743 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:58:58,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58 WrapperNode [2024-09-20 19:58:58,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:58:58,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:58:58,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:58:58,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:58:58,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,759 INFO L138 Inliner]: procedures = 16, calls = 51, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:58:58,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:58:58,760 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:58:58,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:58:58,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:58:58,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,769 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,781 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 5, 7, 4, 2, 7]. 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, 2, 1, 1]. [2024-09-20 19:58:58,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:58:58,791 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:58:58,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:58:58,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:58:58,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (1/1) ... [2024-09-20 19:58:58,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:58:58,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:58:58,815 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 19:58:58,816 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 19:58:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:58:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:58:58,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:58:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:58:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-20 19:58:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-20 19:58:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-20 19:58:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-20 19:58:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-20 19:58:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:58:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-09-20 19:58:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:58:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:58:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-20 19:58:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-20 19:58:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-20 19:58:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-20 19:58:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-20 19:58:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-20 19:58:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:58:58,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:58:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-20 19:58:58,922 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:58:58,923 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:58:59,069 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-20 19:58:59,070 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:58:59,086 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:58:59,086 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 19:58:59,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:58:59 BoogieIcfgContainer [2024-09-20 19:58:59,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:58:59,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:58:59,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:58:59,090 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:58:59,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:58:58" (1/3) ... [2024-09-20 19:58:59,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e54d1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:58:59, skipping insertion in model container [2024-09-20 19:58:59,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:58:58" (2/3) ... [2024-09-20 19:58:59,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e54d1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:58:59, skipping insertion in model container [2024-09-20 19:58:59,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:58:59" (3/3) ... [2024-09-20 19:58:59,092 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo2-ll.c [2024-09-20 19:58:59,104 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:58:59,104 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:58:59,141 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:58:59,146 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;@489f36c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:58:59,146 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:58:59,149 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 19:58:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 19:58:59,154 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:58:59,154 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:58:59,155 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:58:59,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:58:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash 784733954, now seen corresponding path program 1 times [2024-09-20 19:58:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:58:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385524268] [2024-09-20 19:58:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:58:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:58:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:58:59,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067061169] [2024-09-20 19:58:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:58:59,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:58:59,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:58:59,307 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 19:58:59,309 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 19:58:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:58:59,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-20 19:58:59,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:58:59,449 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 19:58:59,462 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 19:58:59,545 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 19:58:59,595 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 19:58:59,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:58:59,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:58:59,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385524268] [2024-09-20 19:58:59,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:58:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067061169] [2024-09-20 19:58:59,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067061169] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:58:59,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:58:59,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-20 19:58:59,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622456042] [2024-09-20 19:58:59,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:58:59,604 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 19:58:59,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:58:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 19:58:59,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-20 19:58:59,621 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 19:58:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:58:59,767 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-09-20 19:58:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 19:58:59,769 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 19:58:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:58:59,774 INFO L225 Difference]: With dead ends: 58 [2024-09-20 19:58:59,774 INFO L226 Difference]: Without dead ends: 34 [2024-09-20 19:58:59,776 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 19:58:59,778 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 19:58:59,779 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 19:58:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-20 19:58:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-20 19:58:59,813 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 19:58:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-20 19:58:59,816 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 12 [2024-09-20 19:58:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:58:59,817 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-20 19:58:59,817 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 19:58:59,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:58:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-20 19:58:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 19:58:59,819 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:58:59,819 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 19:58:59,833 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 19:59:00,019 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 19:59:00,020 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:59:00,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:59:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash 646538741, now seen corresponding path program 1 times [2024-09-20 19:59:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:59:00,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521723660] [2024-09-20 19:59:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:59:00,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:59:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:59:00,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838819886] [2024-09-20 19:59:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:59:00,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:59:00,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:59:00,103 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 19:59:00,104 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 19:59:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:59:00,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-20 19:59:00,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:59:00,282 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 19:59:00,285 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 19:59:00,288 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 19:59:00,413 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 19:59:00,421 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 19:59:00,487 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 [2024-09-20 19:59:00,496 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 19:59:00,501 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 40 treesize of output 20 [2024-09-20 19:59:00,559 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 19:59:00,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:59:09,615 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 19:59:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:59:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521723660] [2024-09-20 19:59:09,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:59:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838819886] [2024-09-20 19:59:09,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838819886] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:59:09,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:59:09,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-09-20 19:59:09,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280739438] [2024-09-20 19:59:09,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:59:09,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-20 19:59:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:59:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-20 19:59:09,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=290, Unknown=2, NotChecked=0, Total=342 [2024-09-20 19:59:09,621 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 19:59:13,642 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 19:59:48,502 WARN L293 SmtUtils]: Spent 10.67s 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 20:00:02,885 WARN L293 SmtUtils]: Spent 10.41s 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) [2024-09-20 20:00:06,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:00:10,927 WARN L539 Checker$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 20:00:15,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:00:19,255 WARN L539 Checker$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 20:00:48,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:00:52,738 WARN L539 Checker$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 20:01:23,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:01:27,327 WARN L539 Checker$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 20:01:31,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:01:35,355 WARN L539 Checker$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 20:01:39,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:01:43,372 WARN L539 Checker$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 20:01:47,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:01:51,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:01:55,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:01:59,431 WARN L539 Checker$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 20:02:03,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-20 20:02:07,475 WARN L539 Checker$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 20:02:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 20:02:07,549 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2024-09-20 20:02:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-20 20:02:07,549 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 20:02:07,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 20:02:07,552 INFO L225 Difference]: With dead ends: 77 [2024-09-20 20:02:07,552 INFO L226 Difference]: Without dead ends: 73 [2024-09-20 20:02:07,553 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 109.1s TimeCoverageRelationStatistics Valid=172, Invalid=805, Unknown=15, NotChecked=0, Total=992 [2024-09-20 20:02:07,553 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 28 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.6s IncrementalHoareTripleChecker+Time [2024-09-20 20:02:07,554 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 191 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 224 Invalid, 19 Unknown, 0 Unchecked, 77.6s Time] [2024-09-20 20:02:07,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-20 20:02:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-09-20 20:02:07,589 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) [2024-09-20 20:02:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2024-09-20 20:02:07,591 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 22 [2024-09-20 20:02:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 20:02:07,592 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2024-09-20 20:02:07,592 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 20:02:07,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 20:02:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2024-09-20 20:02:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 20:02:07,593 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 20:02:07,593 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 20:02:07,607 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 20:02:07,794 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 20:02:07,795 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 20:02:07,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 20:02:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1703476452, now seen corresponding path program 1 times [2024-09-20 20:02:07,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 20:02:07,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252927676] [2024-09-20 20:02:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 20:02:07,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 20:02:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 20:02:07,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542382796] [2024-09-20 20:02:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 20:02:07,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 20:02:07,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 20:02:07,858 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 20:02:07,859 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 20:02:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 20:02:07,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-20 20:02:07,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 20:02:07,971 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 20:02:07,973 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 20:02:07,977 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 20:02:08,050 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 20:02:08,085 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 20:02:08,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 20:02:08,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 20:02:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252927676] [2024-09-20 20:02:08,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 20:02:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542382796] [2024-09-20 20:02:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542382796] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 20:02:08,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 20:02:08,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-20 20:02:08,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208715519] [2024-09-20 20:02:08,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 20:02:08,086 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 20:02:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 20:02:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 20:02:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-20 20:02:08,087 INFO L87 Difference]: Start difference. First operand 71 states and 82 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 20:02:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 20:02:08,222 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2024-09-20 20:02:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 20:02:08,222 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 20:02:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 20:02:08,223 INFO L225 Difference]: With dead ends: 75 [2024-09-20 20:02:08,223 INFO L226 Difference]: Without dead ends: 67 [2024-09-20 20:02:08,224 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 20:02:08,224 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 20:02:08,224 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 20:02:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-20 20:02:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-09-20 20:02:08,250 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) [2024-09-20 20:02:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2024-09-20 20:02:08,253 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 22 [2024-09-20 20:02:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 20:02:08,253 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2024-09-20 20:02:08,253 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 20:02:08,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 20:02:08,254 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2024-09-20 20:02:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-20 20:02:08,255 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 20:02:08,255 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 20:02:08,268 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 20:02:08,456 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 20:02:08,456 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 20:02:08,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 20:02:08,457 INFO L85 PathProgramCache]: Analyzing trace with hash 614548665, now seen corresponding path program 1 times [2024-09-20 20:02:08,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 20:02:08,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503526855] [2024-09-20 20:02:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 20:02:08,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 20:02:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 20:02:08,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021341167] [2024-09-20 20:02:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 20:02:08,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 20:02:08,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 20:02:08,526 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 20:02:08,527 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 20:02:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 20:02:08,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-20 20:02:08,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 20:02:08,679 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 20:02:08,742 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 20:02:08,748 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 20:02:11,429 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 20:02:11,435 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 20:02:11,439 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 20:02:11,523 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 20:02:11,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 20:02:18,866 WARN L854 $PredicateComparison]: unable to prove that (and (or (= (mod (let ((.cse1 (select (select |c_#memory_int#5| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|)) (.cse0 (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|))) (+ (* .cse0 .cse1) (* 18446744073709551615 .cse1 (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|)) (* .cse0 18446744073709551615) 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)) (= (mod (let ((.cse2 (select (select |c_#memory_int#5| |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|)) (.cse3 (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|))) (+ (* .cse2 .cse3) (* (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 .cse2) (* 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~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)) (let ((.cse4 (select (select |c_#memory_int#5| |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 ((.cse5 (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|))) (+ (* .cse4 .cse5) (* (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 .cse5) 1)) 18446744073709551616) 0) (not (= (mod (let ((.cse6 (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|))) (+ (* 18446744073709551615 (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|) .cse4) (* .cse4 .cse6) (* 18446744073709551615 .cse6) 1)) 18446744073709551616) 0)))))) is different from false [2024-09-20 20:02:23,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 20:02:23,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503526855] [2024-09-20 20:02:23,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 20:02:23,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021341167] [2024-09-20 20:02:23,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021341167] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 20:02:23,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-20 20:02:23,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-20 20:02:23,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058089581] [2024-09-20 20:02:23,121 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-20 20:02:23,121 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 20:02:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 20:02:23,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 20:02:23,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=229, Unknown=1, NotChecked=30, Total=306 [2024-09-20 20:02:23,122 INFO L87 Difference]: Start difference. First operand 67 states and 77 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 20:02:28,298 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 20:02:28,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 20:02:28,659 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2024-09-20 20:02:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 20:02:28,660 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 20:02:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 20:02:28,661 INFO L225 Difference]: With dead ends: 73 [2024-09-20 20:02:28,661 INFO L226 Difference]: Without dead ends: 49 [2024-09-20 20:02:28,661 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=106, Invalid=497, Unknown=1, NotChecked=46, Total=650 [2024-09-20 20:02:28,662 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-09-20 20:02:28,662 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 60 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2024-09-20 20:02:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-20 20:02:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-09-20 20:02:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 12 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 20:02:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2024-09-20 20:02:28,678 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 34 [2024-09-20 20:02:28,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 20:02:28,679 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2024-09-20 20:02:28,680 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 20:02:28,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 20:02:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2024-09-20 20:02:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-20 20:02:28,681 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 20:02:28,681 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 20:02:28,694 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 20:02:28,881 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 20:02:28,881 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 20:02:28,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 20:02:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1730732978, now seen corresponding path program 2 times [2024-09-20 20:02:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 20:02:28,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194628312] [2024-09-20 20:02:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 20:02:28,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 20:02:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 20:02:28,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445950265] [2024-09-20 20:02:28,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 20:02:28,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 20:02:28,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 20:02:28,959 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 20:02:28,959 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 20:02:32,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 20:02:32,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 20:02:32,142 WARN L260 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 340 conjuncts are in the unsatisfiable core [2024-09-20 20:02:32,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 20:02:32,160 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 20:02:32,164 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 20:02:32,175 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 20:02:32,183 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 20:02:32,187 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 20:02:32,452 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 20:02:32,457 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 20:02:32,462 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 20:02:32,806 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 20:02:32,812 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 20:02:32,819 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 20:02:33,228 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 20:02:33,243 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 20:02:33,248 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 20:02:34,001 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 20:02:34,006 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 20:02:34,145 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 119 treesize of output 47 [2024-09-20 20:02:34,154 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 [2024-09-20 20:02:34,159 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 24 [2024-09-20 20:02:34,282 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 20:02:34,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 20:03:14,216 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int#1| c_func_to_recursive_line_30_to_38_0_~y.base) c_func_to_recursive_line_30_to_38_0_~y.offset)) (.cse2 (select (select |c_#memory_int#2| c_func_to_recursive_line_30_to_38_0_~x.base) c_func_to_recursive_line_30_to_38_0_~x.offset)) (.cse1 (select (select |c_#memory_int#5| c_func_to_recursive_line_30_to_38_0_~z.base) c_func_to_recursive_line_30_to_38_0_~z.offset))) (or (not (= (mod (+ (* 18446744073709551615 .cse0 .cse1) (* .cse2 .cse1) (* 18446744073709551615 .cse2) 1) 18446744073709551616) 0)) (= (mod (+ (* .cse2 .cse1 .cse1) (* 18446744073709551615 .cse0 .cse1 .cse1) (* 18446744073709551615 .cse2 .cse1) .cse1) 18446744073709551616) 0))) is different from true [2024-09-20 20:03:26,512 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#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|)) (.cse0 (select (select |c_#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|)) (.cse1 (select (select |c_#memory_int#5| |c_func_to_recursive_line_30_to_38_0_#in~z.base|) |c_func_to_recursive_line_30_to_38_0_#in~z.offset|))) (or (not (= (mod (+ (* 18446744073709551615 .cse0) (* .cse0 .cse1) (* 18446744073709551615 .cse1 .cse2) 1) 18446744073709551616) 0)) (= (mod (+ (* 18446744073709551615 .cse0 .cse1) .cse1 (* 18446744073709551615 .cse1 .cse1 .cse2) (* .cse0 .cse1 .cse1)) 18446744073709551616) 0))) is different from true