./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra-u.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 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_dijkstra-u.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 0464cc7a685168b5fc1a1b0dd8da6141b4b98c7c538345750bda8185cd005644 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 16:36:28,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:36:28,726 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:36:28,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:36:28,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:36:28,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:36:28,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:36:28,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:36:28,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:36:28,756 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:36:28,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:36:28,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:36:28,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:36:28,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:36:28,757 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:36:28,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:36:28,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:36:28,758 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:36:28,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:36:28,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:36:28,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:36:28,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:36:28,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:36:28,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:36:28,760 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:36:28,760 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:36:28,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:36:28,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:36:28,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:36:28,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:36:28,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:36:28,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:36:28,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:36:28,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:36:28,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:36:28,761 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:36:28,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:36:28,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:36:28,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:36:28,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:36:28,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:36:28,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:36:28,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0464cc7a685168b5fc1a1b0dd8da6141b4b98c7c538345750bda8185cd005644 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:36:29,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:36:29,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:36:29,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:36:29,050 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:36:29,051 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:36:29,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra-u.c [2024-09-12 16:36:30,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:36:30,541 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:36:30,541 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_dijkstra-u.c [2024-09-12 16:36:30,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/af8ad865d/b7c5ecab5b884128a0baee688b020680/FLAGaa9d651bb [2024-09-12 16:36:30,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/af8ad865d/b7c5ecab5b884128a0baee688b020680 [2024-09-12 16:36:30,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:36:30,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:36:30,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:36:30,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:36:30,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:36:30,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2538191d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30, skipping insertion in model container [2024-09-12 16:36:30,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,594 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:36:30,709 WARN L247 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_dijkstra-u.c[1076,1089] [2024-09-12 16:36:30,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:36:30,757 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:36:30,767 WARN L247 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_dijkstra-u.c[1076,1089] [2024-09-12 16:36:30,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:36:30,802 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:36:30,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30 WrapperNode [2024-09-12 16:36:30,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:36:30,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:36:30,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:36:30,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:36:30,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,833 INFO L138 Inliner]: procedures = 17, calls = 173, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:36:30,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:36:30,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:36:30,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:36:30,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:36:30,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,881 INFO L175 MemorySlicer]: Split 139 memory accesses to 6 slices as follows [2, 29, 35, 22, 21, 30]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 11 writes are split as follows [0, 3, 3, 2, 1, 2]. [2024-09-12 16:36:30,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:36:30,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:36:30,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:36:30,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:36:30,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (1/1) ... [2024-09-12 16:36:30,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:36:30,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:36:30,934 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) [2024-09-12 16:36:30,944 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 [2024-09-12 16:36:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:36:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_33_0 [2024-09-12 16:36:30,994 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_33_0 [2024-09-12 16:36:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 16:36:30,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 16:36:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:36:30,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:36:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:36:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 16:36:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 16:36:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-12 16:36:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-12 16:36:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-12 16:36:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 16:36:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 16:36:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 16:36:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 16:36:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-12 16:36:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-12 16:36:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-12 16:36:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:36:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:36:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_37_to_53_0 [2024-09-12 16:36:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_37_to_53_0 [2024-09-12 16:36:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:36:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:36:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 16:36:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 16:36:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 16:36:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-12 16:36:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-12 16:36:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-12 16:36:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 16:36:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 16:36:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 16:36:31,100 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:36:31,102 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:36:31,383 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-12 16:36:31,383 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:36:31,396 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:36:31,396 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 16:36:31,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:36:31 BoogieIcfgContainer [2024-09-12 16:36:31,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:36:31,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:36:31,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:36:31,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:36:31,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:36:30" (1/3) ... [2024-09-12 16:36:31,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d929daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:36:31, skipping insertion in model container [2024-09-12 16:36:31,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:36:30" (2/3) ... [2024-09-12 16:36:31,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d929daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:36:31, skipping insertion in model container [2024-09-12 16:36:31,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:36:31" (3/3) ... [2024-09-12 16:36:31,408 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_dijkstra-u.c [2024-09-12 16:36:31,419 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:36:31,420 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:36:31,480 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:36:31,487 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;@6ff3ffd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:36:31,488 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:36:31,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 33 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 16:36:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 16:36:31,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:36:31,498 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:36:31,499 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:36:31,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:36:31,505 INFO L85 PathProgramCache]: Analyzing trace with hash -795461761, now seen corresponding path program 1 times [2024-09-12 16:36:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:36:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54317945] [2024-09-12 16:36:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:36:31,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:36:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:31,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:36:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:31,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:36:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:31,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 16:36:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:36:31,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:36:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54317945] [2024-09-12 16:36:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54317945] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:36:31,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:36:31,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 16:36:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672748573] [2024-09-12 16:36:31,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:36:31,701 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 16:36:31,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:36:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 16:36:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 16:36:31,722 INFO L87 Difference]: Start difference. First operand has 54 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 33 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:36:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:36:31,908 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2024-09-12 16:36:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 16:36:31,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-12 16:36:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:36:31,919 INFO L225 Difference]: With dead ends: 104 [2024-09-12 16:36:31,919 INFO L226 Difference]: Without dead ends: 54 [2024-09-12 16:36:31,921 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 16:36:31,925 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:36:31,926 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 46 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:36:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-12 16:36:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-09-12 16:36:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 16:36:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2024-09-12 16:36:31,975 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 23 [2024-09-12 16:36:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:36:31,975 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2024-09-12 16:36:31,976 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:36:31,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:36:31,980 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2024-09-12 16:36:31,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 16:36:31,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:36:31,981 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:36:31,981 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:36:31,981 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:36:31,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:36:31,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1335693656, now seen corresponding path program 1 times [2024-09-12 16:36:31,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:36:31,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735719856] [2024-09-12 16:36:31,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:36:31,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:36:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:32,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:36:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:32,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:36:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:32,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 16:36:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:36:33,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:36:33,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735719856] [2024-09-12 16:36:33,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735719856] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:36:33,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:36:33,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-09-12 16:36:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31079407] [2024-09-12 16:36:33,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:36:33,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 16:36:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:36:33,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 16:36:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-09-12 16:36:33,110 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 16:36:34,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:36:34,067 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2024-09-12 16:36:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 16:36:34,067 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2024-09-12 16:36:34,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:36:34,069 INFO L225 Difference]: With dead ends: 83 [2024-09-12 16:36:34,069 INFO L226 Difference]: Without dead ends: 81 [2024-09-12 16:36:34,069 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-09-12 16:36:34,070 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 60 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 16:36:34,070 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 165 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 16:36:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-12 16:36:34,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2024-09-12 16:36:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 46 states have internal predecessors, (48), 23 states have call successors, (23), 8 states have call predecessors, (23), 9 states have return successors, (26), 21 states have call predecessors, (26), 21 states have call successors, (26) [2024-09-12 16:36:34,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2024-09-12 16:36:34,086 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 24 [2024-09-12 16:36:34,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:36:34,086 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2024-09-12 16:36:34,086 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 16:36:34,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:36:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2024-09-12 16:36:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 16:36:34,087 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:36:34,087 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:36:34,088 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 16:36:34,088 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:36:34,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:36:34,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1872287595, now seen corresponding path program 1 times [2024-09-12 16:36:34,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:36:34,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080869242] [2024-09-12 16:36:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:36:34,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:36:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:36:34,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942900601] [2024-09-12 16:36:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:36:34,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:36:34,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:36:34,119 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) [2024-09-12 16:36:34,123 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 16:36:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:34,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-12 16:36:34,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:36:34,426 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 [2024-09-12 16:36:34,436 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 11 [2024-09-12 16:36:34,444 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 [2024-09-12 16:36:34,685 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 [2024-09-12 16:36:34,714 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 [2024-09-12 16:36:34,723 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 [2024-09-12 16:36:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:36:34,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:36:34,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:36:34,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080869242] [2024-09-12 16:36:34,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:36:34,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942900601] [2024-09-12 16:36:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942900601] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:36:34,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 16:36:34,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-12 16:36:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106765583] [2024-09-12 16:36:34,941 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 16:36:34,941 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 16:36:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:36:34,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 16:36:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-09-12 16:36:34,942 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 16:36:35,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:36:35,298 INFO L93 Difference]: Finished difference Result 122 states and 158 transitions. [2024-09-12 16:36:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 16:36:35,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2024-09-12 16:36:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:36:35,304 INFO L225 Difference]: With dead ends: 122 [2024-09-12 16:36:35,304 INFO L226 Difference]: Without dead ends: 120 [2024-09-12 16:36:35,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-09-12 16:36:35,305 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 47 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:36:35,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 231 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:36:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-12 16:36:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2024-09-12 16:36:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 64 states have (on average 1.125) internal successors, (72), 68 states have internal predecessors, (72), 33 states have call successors, (33), 11 states have call predecessors, (33), 13 states have return successors, (39), 31 states have call predecessors, (39), 30 states have call successors, (39) [2024-09-12 16:36:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2024-09-12 16:36:35,359 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 30 [2024-09-12 16:36:35,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:36:35,361 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2024-09-12 16:36:35,361 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 16:36:35,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:36:35,362 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2024-09-12 16:36:35,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 16:36:35,364 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:36:35,364 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:36:35,373 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 16:36:35,565 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:36:35,566 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:36:35,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:36:35,567 INFO L85 PathProgramCache]: Analyzing trace with hash 687714431, now seen corresponding path program 1 times [2024-09-12 16:36:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:36:35,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653270103] [2024-09-12 16:36:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:36:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:36:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:36,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:36:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:36,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:36:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:36,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 16:36:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:36,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:36:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 16:36:36,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:36:36,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653270103] [2024-09-12 16:36:36,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653270103] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:36:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121446745] [2024-09-12 16:36:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:36:36,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:36:36,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:36:36,849 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) [2024-09-12 16:36:36,850 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 16:36:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:36:36,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-09-12 16:36:36,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:36:36,978 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 [2024-09-12 16:36:36,984 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 11 [2024-09-12 16:36:37,000 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 [2024-09-12 16:36:45,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-09-12 16:36:45,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 16:36:45,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2024-09-12 16:36:53,860 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 25 treesize of output 17 [2024-09-12 16:36:53,864 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 21 treesize of output 13 [2024-09-12 16:36:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:36:53,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:36:54,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-09-12 16:36:55,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121446745] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:36:55,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:36:55,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2024-09-12 16:36:55,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751522199] [2024-09-12 16:36:55,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:36:55,028 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 16:36:55,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:36:55,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 16:36:55,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1285, Unknown=4, NotChecked=0, Total=1406 [2024-09-12 16:36:55,029 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 31 states, 23 states have (on average 1.391304347826087) internal successors, (32), 22 states have internal predecessors, (32), 10 states have call successors, (12), 8 states have call predecessors, (12), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-09-12 16:37:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:37:01,992 INFO L93 Difference]: Finished difference Result 169 states and 221 transitions. [2024-09-12 16:37:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 16:37:01,993 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 1.391304347826087) internal successors, (32), 22 states have internal predecessors, (32), 10 states have call successors, (12), 8 states have call predecessors, (12), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 30 [2024-09-12 16:37:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:37:01,995 INFO L225 Difference]: With dead ends: 169 [2024-09-12 16:37:01,995 INFO L226 Difference]: Without dead ends: 167 [2024-09-12 16:37:02,002 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=347, Invalid=3308, Unknown=5, NotChecked=0, Total=3660 [2024-09-12 16:37:02,002 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 158 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-12 16:37:02,003 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 262 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-12 16:37:02,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-12 16:37:02,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 108. [2024-09-12 16:37:02,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.126984126984127) internal successors, (71), 67 states have internal predecessors, (71), 32 states have call successors, (32), 11 states have call predecessors, (32), 12 states have return successors, (34), 30 states have call predecessors, (34), 29 states have call successors, (34) [2024-09-12 16:37:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 137 transitions. [2024-09-12 16:37:02,073 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 137 transitions. Word has length 30 [2024-09-12 16:37:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:37:02,073 INFO L474 AbstractCegarLoop]: Abstraction has 108 states and 137 transitions. [2024-09-12 16:37:02,076 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 1.391304347826087) internal successors, (32), 22 states have internal predecessors, (32), 10 states have call successors, (12), 8 states have call predecessors, (12), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-09-12 16:37:02,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:37:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 137 transitions. [2024-09-12 16:37:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 16:37:02,077 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:37:02,077 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:37:02,095 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 16:37:02,278 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:37:02,278 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:37:02,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:37:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash -546904304, now seen corresponding path program 1 times [2024-09-12 16:37:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:37:02,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352208642] [2024-09-12 16:37:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:37:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:37:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:37:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162744438] [2024-09-12 16:37:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:37:02,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:37:02,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:37:02,308 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) [2024-09-12 16:37:02,309 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 16:37:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:37:02,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-09-12 16:37:02,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:37:02,439 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 [2024-09-12 16:37:02,443 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 [2024-09-12 16:37:02,449 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 15 treesize of output 11 [2024-09-12 16:37:02,454 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 [2024-09-12 16:37:02,459 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 [2024-09-12 16:37:03,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 16:37:03,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 38 [2024-09-12 16:37:03,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 16:37:03,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2024-09-12 16:37:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 16:37:03,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:37:33,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:37:33,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352208642] [2024-09-12 16:37:33,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:37:33,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162744438] [2024-09-12 16:37:33,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162744438] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:37:33,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 16:37:33,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-12 16:37:33,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293907780] [2024-09-12 16:37:33,301 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 16:37:33,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 16:37:33,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:37:33,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 16:37:33,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=197, Unknown=5, NotChecked=0, Total=240 [2024-09-12 16:37:33,303 INFO L87 Difference]: Start difference. First operand 108 states and 137 transitions. Second operand has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 16:37:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:37:38,611 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2024-09-12 16:37:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 16:37:38,611 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2024-09-12 16:37:38,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:37:38,613 INFO L225 Difference]: With dead ends: 157 [2024-09-12 16:37:38,613 INFO L226 Difference]: Without dead ends: 155 [2024-09-12 16:37:38,614 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=93, Invalid=453, Unknown=6, NotChecked=0, Total=552 [2024-09-12 16:37:38,614 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 16:37:38,615 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 267 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 16:37:38,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-12 16:37:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2024-09-12 16:37:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 96 states have internal predecessors, (103), 42 states have call successors, (42), 17 states have call predecessors, (42), 18 states have return successors, (46), 40 states have call predecessors, (46), 38 states have call successors, (46) [2024-09-12 16:37:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 191 transitions. [2024-09-12 16:37:38,658 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 191 transitions. Word has length 36 [2024-09-12 16:37:38,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:37:38,658 INFO L474 AbstractCegarLoop]: Abstraction has 153 states and 191 transitions. [2024-09-12 16:37:38,659 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 16:37:38,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:37:38,659 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 191 transitions. [2024-09-12 16:37:38,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 16:37:38,660 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:37:38,660 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:37:38,675 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 16:37:38,864 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:37:38,865 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:37:38,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:37:38,865 INFO L85 PathProgramCache]: Analyzing trace with hash 21325385, now seen corresponding path program 1 times [2024-09-12 16:37:38,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:37:38,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443964396] [2024-09-12 16:37:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:37:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:37:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:37:38,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128360670] [2024-09-12 16:37:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:37:38,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:37:38,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:37:38,907 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) [2024-09-12 16:37:38,908 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 16:37:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:37:39,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-12 16:37:39,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:37:39,110 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 [2024-09-12 16:37:39,112 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 11 [2024-09-12 16:37:39,116 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 [2024-09-12 16:37:39,329 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 50 treesize of output 22 [2024-09-12 16:37:39,356 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 47 treesize of output 23 [2024-09-12 16:37:39,363 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 43 treesize of output 19 [2024-09-12 16:37:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 16:37:39,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:37:51,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:37:51,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443964396] [2024-09-12 16:37:51,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:37:51,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128360670] [2024-09-12 16:37:51,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128360670] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:37:51,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 16:37:51,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-12 16:37:51,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667768693] [2024-09-12 16:37:51,969 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 16:37:51,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 16:37:51,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:37:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 16:37:51,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=84, Unknown=2, NotChecked=0, Total=110 [2024-09-12 16:37:51,971 INFO L87 Difference]: Start difference. First operand 153 states and 191 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 16:37:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:37:52,551 INFO L93 Difference]: Finished difference Result 179 states and 216 transitions. [2024-09-12 16:37:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 16:37:52,552 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2024-09-12 16:37:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:37:52,553 INFO L225 Difference]: With dead ends: 179 [2024-09-12 16:37:52,553 INFO L226 Difference]: Without dead ends: 177 [2024-09-12 16:37:52,554 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=49, Invalid=159, Unknown=2, NotChecked=0, Total=210 [2024-09-12 16:37:52,554 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 28 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:37:52,554 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 269 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:37:52,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-12 16:37:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2024-09-12 16:37:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 107 states have (on average 1.1121495327102804) internal successors, (119), 111 states have internal predecessors, (119), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (48), 43 states have call predecessors, (48), 40 states have call successors, (48) [2024-09-12 16:37:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 212 transitions. [2024-09-12 16:37:52,607 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 212 transitions. Word has length 42 [2024-09-12 16:37:52,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:37:52,607 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 212 transitions. [2024-09-12 16:37:52,607 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 16:37:52,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:37:52,608 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 212 transitions. [2024-09-12 16:37:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 16:37:52,609 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:37:52,609 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:37:52,628 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 16:37:52,810 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:37:52,810 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:37:52,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:37:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1606878135, now seen corresponding path program 1 times [2024-09-12 16:37:52,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:37:52,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427689963] [2024-09-12 16:37:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:37:52,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:37:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:37:52,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038881686] [2024-09-12 16:37:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:37:52,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:37:52,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:37:52,865 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) [2024-09-12 16:37:52,866 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 16:37:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:37:53,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 139 conjuncts are in the unsatisfiable core [2024-09-12 16:37:53,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:37:53,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 16:37:53,043 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 [2024-09-12 16:37:53,048 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 [2024-09-12 16:37:53,055 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 11 [2024-09-12 16:37:53,061 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 [2024-09-12 16:37:53,348 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 21 [2024-09-12 16:37:53,546 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 3 [2024-09-12 16:37:54,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 16:37:54,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2024-09-12 16:37:54,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 16:37:54,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-09-12 16:37:54,496 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 57 treesize of output 25 [2024-09-12 16:37:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 16:37:54,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:39:07,310 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 16:39:07,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:39:07,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427689963] [2024-09-12 16:39:07,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:39:07,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038881686] [2024-09-12 16:39:07,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038881686] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:39:07,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 16:39:07,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-09-12 16:39:07,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578045325] [2024-09-12 16:39:07,373 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 16:39:07,373 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 16:39:07,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:39:07,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 16:39:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=391, Unknown=16, NotChecked=0, Total=462 [2024-09-12 16:39:07,374 INFO L87 Difference]: Start difference. First operand 175 states and 212 transitions. Second operand has 20 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 16:39:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:39:21,313 INFO L93 Difference]: Finished difference Result 233 states and 276 transitions. [2024-09-12 16:39:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 16:39:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 42 [2024-09-12 16:39:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:39:21,315 INFO L225 Difference]: With dead ends: 233 [2024-09-12 16:39:21,315 INFO L226 Difference]: Without dead ends: 231 [2024-09-12 16:39:21,316 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 85.7s TimeCoverageRelationStatistics Valid=104, Invalid=689, Unknown=19, NotChecked=0, Total=812 [2024-09-12 16:39:21,316 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 55 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 42 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:39:21,316 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 331 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 942 Invalid, 2 Unknown, 0 Unchecked, 1.3s Time] [2024-09-12 16:39:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-09-12 16:39:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2024-09-12 16:39:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 140 states have (on average 1.1071428571428572) internal successors, (155), 144 states have internal predecessors, (155), 55 states have call successors, (55), 28 states have call predecessors, (55), 31 states have return successors, (62), 54 states have call predecessors, (62), 49 states have call successors, (62) [2024-09-12 16:39:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 272 transitions. [2024-09-12 16:39:21,405 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 272 transitions. Word has length 42 [2024-09-12 16:39:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:39:21,406 INFO L474 AbstractCegarLoop]: Abstraction has 227 states and 272 transitions. [2024-09-12 16:39:21,406 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-12 16:39:21,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:39:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 272 transitions. [2024-09-12 16:39:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 16:39:21,409 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:39:21,409 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:39:21,422 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 16:39:21,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 16:39:21,614 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:39:21,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:39:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash 964440670, now seen corresponding path program 2 times [2024-09-12 16:39:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:39:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527518075] [2024-09-12 16:39:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:39:21,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:39:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:39:21,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210177168] [2024-09-12 16:39:21,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:39:21,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:39:21,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:39:21,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:39:21,646 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 16:39:21,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:39:21,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:39:21,780 WARN L260 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 197 conjuncts are in the unsatisfiable core [2024-09-12 16:39:21,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:39:21,793 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 [2024-09-12 16:39:21,867 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 [2024-09-12 16:39:21,875 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 [2024-09-12 16:39:21,885 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 [2024-09-12 16:39:21,892 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 11 [2024-09-12 16:39:22,191 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 11 [2024-09-12 16:39:22,294 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 11 [2024-09-12 16:39:22,886 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 [2024-09-12 16:39:24,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 16:39:24,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2024-09-12 16:39:24,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 16:39:24,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 45 [2024-09-12 16:39:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 16:39:24,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:40:32,705 WARN L293 SmtUtils]: Spent 7.70s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)