./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 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_bresenham-ll.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d115e09498e3f278fd539730f0fa55e0745770e0304e10455a14000311085b68 --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-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 19:51:47,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 19:51:47,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 19:51:47,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 19:51:47,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 19:51:47,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 19:51:47,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 19:51:47,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 19:51:47,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 19:51:47,206 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 19:51:47,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 19:51:47,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 19:51:47,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 19:51:47,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 19:51:47,212 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 19:51:47,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 19:51:47,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 19:51:47,213 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 19:51:47,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 19:51:47,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 19:51:47,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 19:51:47,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 19:51:47,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 19:51:47,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 19:51:47,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 19:51:47,216 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 19:51:47,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 19:51:47,216 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 19:51:47,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 19:51:47,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 19:51:47,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 19:51:47,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 19:51:47,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:51:47,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 19:51:47,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 19:51:47,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 19:51:47,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 19:51:47,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 19:51:47,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 19:51:47,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 19:51:47,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 19:51:47,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 19:51:47,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d115e09498e3f278fd539730f0fa55e0745770e0304e10455a14000311085b68 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 19:51:47,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 19:51:47,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 19:51:47,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 19:51:47,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 19:51:47,587 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 19:51:47,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c [2024-09-15 19:51:49,104 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 19:51:49,271 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 19:51:49,272 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c [2024-09-15 19:51:49,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/a8054b51f/1e48b919088b4a3fbc5ba3916bfe7fe1/FLAG8fbaffb94 [2024-09-15 19:51:49,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/a8054b51f/1e48b919088b4a3fbc5ba3916bfe7fe1 [2024-09-15 19:51:49,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 19:51:49,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 19:51:49,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 19:51:49,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 19:51:49,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 19:51:49,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:49,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e40cd95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49, skipping insertion in model container [2024-09-15 19:51:49,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:49,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 19:51:49,853 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c[1137,1150] [2024-09-15 19:51:49,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:51:49,891 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 19:51:49,901 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_bresenham-ll.c[1137,1150] [2024-09-15 19:51:49,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:51:49,932 INFO L204 MainTranslator]: Completed translation [2024-09-15 19:51:49,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49 WrapperNode [2024-09-15 19:51:49,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 19:51:49,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 19:51:49,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 19:51:49,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 19:51:49,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:49,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:49,952 INFO L138 Inliner]: procedures = 16, calls = 76, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 19:51:49,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 19:51:49,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 19:51:49,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 19:51:49,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 19:51:49,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:49,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:49,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:49,988 INFO L175 MemorySlicer]: Split 46 memory accesses to 8 slices as follows [2, 4, 8, 4, 8, 6, 7, 7]. 17 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 13 writes are split as follows [0, 2, 3, 2, 1, 2, 1, 2]. [2024-09-15 19:51:49,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:49,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:49,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:50,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:50,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:50,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:50,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 19:51:50,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 19:51:50,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 19:51:50,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 19:51:50,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (1/1) ... [2024-09-15 19:51:50,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:51:50,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:51:50,052 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) [2024-09-15 19:51:50,065 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 [2024-09-15 19:51:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 19:51:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 19:51:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 19:51:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 19:51:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-15 19:51:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-15 19:51:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-15 19:51:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-15 19:51:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-15 19:51:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-09-15 19:51:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-09-15 19:51:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-15 19:51:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-15 19:51:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-15 19:51:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-15 19:51:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-15 19:51:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-15 19:51:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-15 19:51:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-09-15 19:51:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-09-15 19:51:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 19:51:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 19:51:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 19:51:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 19:51:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-15 19:51:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-15 19:51:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-15 19:51:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-15 19:51:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-15 19:51:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-15 19:51:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-09-15 19:51:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-09-15 19:51:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_41_0 [2024-09-15 19:51:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_41_0 [2024-09-15 19:51:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 19:51:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 19:51:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-15 19:51:50,219 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 19:51:50,220 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 19:51:50,445 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-15 19:51:50,446 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 19:51:50,463 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 19:51:50,464 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 19:51:50,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:51:50 BoogieIcfgContainer [2024-09-15 19:51:50,464 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 19:51:50,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 19:51:50,465 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 19:51:50,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 19:51:50,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:51:49" (1/3) ... [2024-09-15 19:51:50,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ced851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:51:50, skipping insertion in model container [2024-09-15 19:51:50,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:51:49" (2/3) ... [2024-09-15 19:51:50,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ced851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:51:50, skipping insertion in model container [2024-09-15 19:51:50,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:51:50" (3/3) ... [2024-09-15 19:51:50,474 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_bresenham-ll.c [2024-09-15 19:51:50,487 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 19:51:50,487 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 19:51:50,544 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 19:51:50,550 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;@7beadffa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 19:51:50,551 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 19:51:50,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 19:51:50,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-15 19:51:50,564 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:51:50,565 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:51:50,565 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:51:50,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:50,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1584617207, now seen corresponding path program 1 times [2024-09-15 19:51:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:51:50,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715400615] [2024-09-15 19:51:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:51:50,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:51:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:51:50,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323151583] [2024-09-15 19:51:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:51:50,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:51:50,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:51:50,752 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) [2024-09-15 19:51:50,757 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 19:51:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:50,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-15 19:51:50,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:51:50,964 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 25 treesize of output 19 [2024-09-15 19:51:50,978 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 [2024-09-15 19:51:50,985 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 [2024-09-15 19:51:50,996 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 [2024-09-15 19:51:51,017 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 [2024-09-15 19:51:51,193 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 27 treesize of output 19 [2024-09-15 19:51:51,202 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 23 treesize of output 15 [2024-09-15 19:51:51,211 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 [2024-09-15 19:51:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:51:51,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 19:51:51,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:51:51,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715400615] [2024-09-15 19:51:51,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:51:51,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323151583] [2024-09-15 19:51:51,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323151583] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:51:51,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:51:51,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-15 19:51:51,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061735281] [2024-09-15 19:51:51,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:51:51,291 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 19:51:51,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:51:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 19:51:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-15 19:51:51,317 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-15 19:51:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:51:51,557 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2024-09-15 19:51:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 19:51:51,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-15 19:51:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:51:51,570 INFO L225 Difference]: With dead ends: 63 [2024-09-15 19:51:51,570 INFO L226 Difference]: Without dead ends: 37 [2024-09-15 19:51:51,576 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-15 19:51:51,578 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:51:51,578 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 114 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:51:51,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-15 19:51:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-09-15 19:51:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-15 19:51:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-15 19:51:51,621 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2024-09-15 19:51:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:51:51,621 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-15 19:51:51,621 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-15 19:51:51,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-15 19:51:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-15 19:51:51,623 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:51:51,623 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:51:51,643 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 19:51:51,824 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-09-15 19:51:51,824 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:51:51,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:51,825 INFO L85 PathProgramCache]: Analyzing trace with hash 404436698, now seen corresponding path program 1 times [2024-09-15 19:51:51,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:51:51,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409884002] [2024-09-15 19:51:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:51:51,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:51:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:51:51,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117655841] [2024-09-15 19:51:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:51:51,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:51:51,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:51:51,918 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) [2024-09-15 19:51:51,919 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 19:51:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:52,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-15 19:51:52,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:51:52,040 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 [2024-09-15 19:51:52,043 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 [2024-09-15 19:51:52,053 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 25 treesize of output 19 [2024-09-15 19:51:52,079 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 15 [2024-09-15 19:51:52,183 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 27 treesize of output 19 [2024-09-15 19:51:52,189 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 23 treesize of output 15 [2024-09-15 19:51:52,193 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 [2024-09-15 19:51:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:51:52,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 19:51:52,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:51:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409884002] [2024-09-15 19:51:52,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:51:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117655841] [2024-09-15 19:51:52,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117655841] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:51:52,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:51:52,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-15 19:51:52,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454603532] [2024-09-15 19:51:52,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:51:52,286 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 19:51:52,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:51:52,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 19:51:52,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-15 19:51:52,287 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 19:51:52,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:51:52,420 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2024-09-15 19:51:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 19:51:52,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2024-09-15 19:51:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:51:52,422 INFO L225 Difference]: With dead ends: 45 [2024-09-15 19:51:52,422 INFO L226 Difference]: Without dead ends: 35 [2024-09-15 19:51:52,423 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-09-15 19:51:52,423 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:51:52,424 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:51:52,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-15 19:51:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-15 19:51:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-15 19:51:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-09-15 19:51:52,434 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 22 [2024-09-15 19:51:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:51:52,435 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-09-15 19:51:52,435 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 19:51:52,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-09-15 19:51:52,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-15 19:51:52,436 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:51:52,436 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:51:52,461 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 19:51:52,640 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:51:52,641 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:51:52,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:51:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1939087400, now seen corresponding path program 1 times [2024-09-15 19:51:52,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:51:52,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466982238] [2024-09-15 19:51:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:51:52,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:51:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:51:52,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354525420] [2024-09-15 19:51:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:51:52,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:51:52,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:51:52,695 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) [2024-09-15 19:51:52,696 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 19:51:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:51:52,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-09-15 19:51:52,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:51:52,825 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 [2024-09-15 19:51:52,829 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 25 treesize of output 19 [2024-09-15 19:51:52,834 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 [2024-09-15 19:51:52,838 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 [2024-09-15 19:51:52,845 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 [2024-09-15 19:51:53,086 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 43 treesize of output 31 [2024-09-15 19:51:58,767 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 [2024-09-15 19:51:58,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2024-09-15 19:51:58,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-09-15 19:51:58,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-09-15 19:51:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:51:58,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:51:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:51:59,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:51:59,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466982238] [2024-09-15 19:51:59,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:51:59,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354525420] [2024-09-15 19:51:59,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354525420] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:51:59,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:51:59,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 22 [2024-09-15 19:51:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977832061] [2024-09-15 19:51:59,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:51:59,446 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-15 19:51:59,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:51:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-15 19:51:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=391, Unknown=1, NotChecked=0, Total=462 [2024-09-15 19:51:59,448 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 9 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 19:52:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:52:00,467 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-09-15 19:52:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-15 19:52:00,467 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 9 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2024-09-15 19:52:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:52:00,469 INFO L225 Difference]: With dead ends: 56 [2024-09-15 19:52:00,470 INFO L226 Difference]: Without dead ends: 52 [2024-09-15 19:52:00,470 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=176, Invalid=879, Unknown=1, NotChecked=0, Total=1056 [2024-09-15 19:52:00,471 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 53 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-15 19:52:00,471 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 171 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-15 19:52:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-15 19:52:00,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2024-09-15 19:52:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-15 19:52:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2024-09-15 19:52:00,486 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 24 [2024-09-15 19:52:00,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:52:00,487 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2024-09-15 19:52:00,487 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 9 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 19:52:00,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:52:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2024-09-15 19:52:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-15 19:52:00,488 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:52:00,488 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:52:00,504 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 19:52:00,689 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-09-15 19:52:00,689 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:52:00,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:52:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash 674694001, now seen corresponding path program 1 times [2024-09-15 19:52:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:52:00,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201466399] [2024-09-15 19:52:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:52:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:52:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:52:00,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988546811] [2024-09-15 19:52:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:52:00,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:52:00,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:52:00,805 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) [2024-09-15 19:52:00,806 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 19:52:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:52:00,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 157 conjuncts are in the unsatisfiable core [2024-09-15 19:52:00,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:52:00,938 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 [2024-09-15 19:52:00,940 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 [2024-09-15 19:52:00,944 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 25 treesize of output 19 [2024-09-15 19:52:00,952 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 [2024-09-15 19:52:00,955 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 [2024-09-15 19:52:00,968 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 15 [2024-09-15 19:52:01,611 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 21 treesize of output 17 [2024-09-15 19:52:01,632 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 21 treesize of output 17 [2024-09-15 19:52:02,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2024-09-15 19:52:02,835 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 [2024-09-15 19:52:02,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-15 19:52:02,986 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 77 treesize of output 65 [2024-09-15 19:52:03,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-15 19:52:03,015 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 25 treesize of output 29 [2024-09-15 19:52:03,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-15 19:52:03,033 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 54 treesize of output 46 [2024-09-15 19:52:03,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-15 19:52:03,052 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 17 treesize of output 21 [2024-09-15 19:52:03,076 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 [2024-09-15 19:52:03,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-15 19:52:03,097 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 21 treesize of output 25 [2024-09-15 19:52:03,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-15 19:52:03,109 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 17 treesize of output 21 [2024-09-15 19:52:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-15 19:52:03,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:52:11,434 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 114 treesize of output 106 [2024-09-15 19:52:11,441 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 106 treesize of output 94 [2024-09-15 19:52:11,448 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 94 treesize of output 78 [2024-09-15 19:52:15,491 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (forall ((|v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~X.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~Y.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~X.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~Y.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_4| Int)) (let ((.cse12 (select (select |c_#memory_int#7| |v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_4|)) (.cse11 (select (select |c_#memory_int#5| |v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_4|))) (= (+ (select (select |c_#memory_int#2| |v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_4|) (select (select |c_#memory_int#6| |v_func_to_recursive_line_0_to_41_0_#in~X.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~X.offset_BEFORE_CALL_4|) (* (* .cse11 .cse12) 2)) (let ((.cse13 (select (select |c_#memory_int#4| |v_func_to_recursive_line_0_to_41_0_#in~Y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~Y.offset_BEFORE_CALL_4|))) (+ (* (* .cse13 .cse12) 2) (* 2 .cse13) (* .cse11 2))))))) (.cse0 (select (select |c_#memory_int#6| |c_func_to_recursive_line_0_to_41_0_#in~X.base|) |c_func_to_recursive_line_0_to_41_0_#in~X.offset|)) (.cse1 (select (select |c_old(#memory_int#7)| |c_func_to_recursive_line_0_to_41_0_#in~x.base|) |c_func_to_recursive_line_0_to_41_0_#in~x.offset|))) (and (or (< .cse0 .cse1) .cse2) (or .cse2 (= (+ (select (select |c_old(#memory_int#2)| |c_func_to_recursive_line_0_to_41_0_#in~v.base|) |c_func_to_recursive_line_0_to_41_0_#in~v.offset|) (* 2 (* .cse0 (select (select |c_old(#memory_int#5)| |c_func_to_recursive_line_0_to_41_0_#in~y.base|) |c_func_to_recursive_line_0_to_41_0_#in~y.offset|))) .cse0) (let ((.cse3 (select (select |c_#memory_int#4| |c_func_to_recursive_line_0_to_41_0_#in~Y.base|) |c_func_to_recursive_line_0_to_41_0_#in~Y.offset|))) (+ (* 2 .cse3) (* 2 (* .cse3 .cse1)))))) (forall ((|v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~X.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~Y.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~X.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~Y.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_4| Int) (|v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_4| Int)) (let ((.cse5 (select (select |c_#memory_int#4| |v_func_to_recursive_line_0_to_41_0_#in~Y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~Y.offset_BEFORE_CALL_4|))) (let ((.cse8 (select (select |c_#memory_int#6| |v_func_to_recursive_line_0_to_41_0_#in~X.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~X.offset_BEFORE_CALL_4|)) (.cse7 (* 2 .cse5))) (or (not (let ((.cse4 (select (select |c_old(#memory_int#7)| |v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_4|)) (.cse6 (select (select |c_old(#memory_int#5)| |v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_4|))) (= (+ (* (* .cse4 .cse5) 2) (* 2 .cse6) .cse7) (+ .cse8 (select (select |c_old(#memory_int#2)| |v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_4|) (* 2 (* .cse4 .cse6)))))) (let ((.cse10 (select (select |c_#memory_int#7| |v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_4|)) (.cse9 (select (select |c_#memory_int#5| |v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_4|))) (= (+ (select (select |c_#memory_int#2| |v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_4|) |v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_4|) .cse8 (* (* .cse9 .cse10) 2)) (+ (* (* .cse5 .cse10) 2) .cse7 (* .cse9 2)))))))))) is different from false [2024-09-15 19:52:20,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:52:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201466399] [2024-09-15 19:52:20,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:52:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988546811] [2024-09-15 19:52:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988546811] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:52:20,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:52:20,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-09-15 19:52:20,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90210411] [2024-09-15 19:52:20,136 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-15 19:52:20,136 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 19:52:20,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:52:20,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 19:52:20,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=671, Unknown=2, NotChecked=52, Total=812 [2024-09-15 19:52:20,137 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 20 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 19:52:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:52:23,665 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2024-09-15 19:52:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-15 19:52:23,666 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 36 [2024-09-15 19:52:23,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:52:23,667 INFO L225 Difference]: With dead ends: 59 [2024-09-15 19:52:23,667 INFO L226 Difference]: Without dead ends: 49 [2024-09-15 19:52:23,667 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=194, Invalid=1448, Unknown=2, NotChecked=78, Total=1722 [2024-09-15 19:52:23,668 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:52:23,668 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 74 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-15 19:52:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-15 19:52:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-15 19:52:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-15 19:52:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2024-09-15 19:52:23,688 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 36 [2024-09-15 19:52:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:52:23,688 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2024-09-15 19:52:23,689 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 19:52:23,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:52:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2024-09-15 19:52:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-15 19:52:23,690 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:52:23,690 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:52:23,703 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 19:52:23,894 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:52:23,895 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:52:23,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:52:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1097395827, now seen corresponding path program 1 times [2024-09-15 19:52:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:52:23,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713270357] [2024-09-15 19:52:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:52:23,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:52:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:52:23,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46759350] [2024-09-15 19:52:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:52:23,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:52:23,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:52:23,940 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) [2024-09-15 19:52:23,944 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 19:52:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:52:24,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-09-15 19:52:24,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:52:24,082 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 25 treesize of output 19 [2024-09-15 19:52:24,086 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 [2024-09-15 19:52:24,092 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 [2024-09-15 19:52:24,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-15 19:52:24,105 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 [2024-09-15 19:52:24,120 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 15 [2024-09-15 19:52:25,002 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 46 treesize of output 42 [2024-09-15 19:52:25,008 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 42 treesize of output 38 [2024-09-15 19:52:25,011 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 11 treesize of output 7 [2024-09-15 19:52:25,342 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 [2024-09-15 19:52:25,347 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 [2024-09-15 19:52:25,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-09-15 19:52:25,404 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 [2024-09-15 19:52:25,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-09-15 19:52:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-15 19:52:25,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:53:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:53:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713270357] [2024-09-15 19:53:02,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:53:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46759350] [2024-09-15 19:53:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46759350] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:53:02,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:53:02,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-09-15 19:53:02,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789720368] [2024-09-15 19:53:02,834 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-15 19:53:02,835 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-15 19:53:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:53:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-15 19:53:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=654, Unknown=7, NotChecked=0, Total=756 [2024-09-15 19:53:02,836 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 6 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 19:53:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:53:07,132 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-09-15 19:53:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-15 19:53:07,133 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 6 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 36 [2024-09-15 19:53:07,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:53:07,134 INFO L225 Difference]: With dead ends: 57 [2024-09-15 19:53:07,134 INFO L226 Difference]: Without dead ends: 51 [2024-09-15 19:53:07,135 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=153, Invalid=1100, Unknown=7, NotChecked=0, Total=1260 [2024-09-15 19:53:07,135 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:53:07,135 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 72 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-15 19:53:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-15 19:53:07,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-15 19:53:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-15 19:53:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-09-15 19:53:07,157 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 36 [2024-09-15 19:53:07,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:53:07,157 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-09-15 19:53:07,158 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 6 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 19:53:07,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:53:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-09-15 19:53:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-15 19:53:07,160 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:53:07,160 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:53:07,175 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 19:53:07,360 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:53:07,361 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:53:07,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:53:07,362 INFO L85 PathProgramCache]: Analyzing trace with hash 18206728, now seen corresponding path program 2 times [2024-09-15 19:53:07,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:53:07,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002172762] [2024-09-15 19:53:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:53:07,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:53:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:53:07,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622304854] [2024-09-15 19:53:07,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:53:07,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:53:07,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:53:07,424 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) [2024-09-15 19:53:07,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 19:53:07,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:53:07,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:53:07,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-09-15 19:53:07,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:53:07,609 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 [2024-09-15 19:53:07,616 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 [2024-09-15 19:53:07,624 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 [2024-09-15 19:53:07,629 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 25 treesize of output 19 [2024-09-15 19:53:07,656 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 15 [2024-09-15 19:53:08,848 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 43 treesize of output 31 [2024-09-15 19:53:08,863 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 [2024-09-15 19:53:08,968 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 27 treesize of output 19 [2024-09-15 19:53:08,978 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 23 treesize of output 15 [2024-09-15 19:53:08,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-09-15 19:53:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-15 19:53:09,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:53:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:53:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002172762] [2024-09-15 19:53:11,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:53:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622304854] [2024-09-15 19:53:11,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622304854] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:53:11,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:53:11,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-15 19:53:11,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128418902] [2024-09-15 19:53:11,208 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-15 19:53:11,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-15 19:53:11,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:53:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-15 19:53:11,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-09-15 19:53:11,209 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 15 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 19:53:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:53:12,356 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2024-09-15 19:53:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 19:53:12,357 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2024-09-15 19:53:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:53:12,359 INFO L225 Difference]: With dead ends: 59 [2024-09-15 19:53:12,359 INFO L226 Difference]: Without dead ends: 53 [2024-09-15 19:53:12,360 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-09-15 19:53:12,360 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:53:12,360 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 96 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-15 19:53:12,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-15 19:53:12,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2024-09-15 19:53:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-15 19:53:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2024-09-15 19:53:12,408 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 50 [2024-09-15 19:53:12,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:53:12,408 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2024-09-15 19:53:12,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 19:53:12,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:53:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2024-09-15 19:53:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-15 19:53:12,410 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:53:12,410 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:53:12,418 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-15 19:53:12,610 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:53:12,611 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:53:12,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:53:12,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1787231606, now seen corresponding path program 1 times [2024-09-15 19:53:12,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:53:12,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551523636] [2024-09-15 19:53:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:53:12,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:53:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:13,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:53:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:14,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:53:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:15,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:53:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:15,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:53:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:16,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:53:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:16,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:53:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:16,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:53:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-15 19:53:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:53:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551523636] [2024-09-15 19:53:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551523636] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:53:16,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859969103] [2024-09-15 19:53:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:53:16,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:53:16,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:53:16,772 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:53:16,773 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 19:53:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:16,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-09-15 19:53:16,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:53:16,935 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 25 treesize of output 19 [2024-09-15 19:53:16,952 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 [2024-09-15 19:53:16,961 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 [2024-09-15 19:53:16,969 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 [2024-09-15 19:53:16,986 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 15 [2024-09-15 19:53:17,994 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 [2024-09-15 19:53:18,000 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 [2024-09-15 19:53:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-15 19:53:19,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:53:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 19:53:26,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859969103] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:53:26,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:53:26,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 19] total 49 [2024-09-15 19:53:26,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675859667] [2024-09-15 19:53:26,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:53:26,370 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-15 19:53:26,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:53:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-15 19:53:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2102, Unknown=0, NotChecked=0, Total=2352 [2024-09-15 19:53:26,372 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 49 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 43 states have internal predecessors, (65), 18 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 14 states have call predecessors, (18), 17 states have call successors, (18) [2024-09-15 19:53:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:53:29,654 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-15 19:53:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-15 19:53:29,655 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 43 states have internal predecessors, (65), 18 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 14 states have call predecessors, (18), 17 states have call successors, (18) Word has length 50 [2024-09-15 19:53:29,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:53:29,656 INFO L225 Difference]: With dead ends: 63 [2024-09-15 19:53:29,656 INFO L226 Difference]: Without dead ends: 57 [2024-09-15 19:53:29,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=373, Invalid=3049, Unknown=0, NotChecked=0, Total=3422 [2024-09-15 19:53:29,657 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:53:29,658 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 121 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-15 19:53:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-15 19:53:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2024-09-15 19:53:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.088235294117647) internal successors, (37), 35 states have internal predecessors, (37), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (17), 9 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-15 19:53:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-09-15 19:53:29,711 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 50 [2024-09-15 19:53:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:53:29,711 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-09-15 19:53:29,712 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 43 states have internal predecessors, (65), 18 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 14 states have call predecessors, (18), 17 states have call successors, (18) [2024-09-15 19:53:29,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:53:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-09-15 19:53:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-15 19:53:29,713 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:53:29,713 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:53:29,741 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-15 19:53:29,913 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:53:29,913 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:53:29,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:53:29,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1663730188, now seen corresponding path program 2 times [2024-09-15 19:53:29,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:53:29,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411636449] [2024-09-15 19:53:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:53:29,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:53:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:53:29,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300231296] [2024-09-15 19:53:29,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:53:29,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:53:29,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:53:29,972 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:53:29,972 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-15 19:53:30,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:53:30,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:53:30,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-09-15 19:53:30,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:53:30,188 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 [2024-09-15 19:53:30,199 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 [2024-09-15 19:53:30,207 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 [2024-09-15 19:53:30,216 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 25 treesize of output 19 [2024-09-15 19:53:30,228 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 [2024-09-15 19:53:30,257 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 15 [2024-09-15 19:53:32,026 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 11 treesize of output 7 [2024-09-15 19:53:32,731 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 [2024-09-15 19:53:32,742 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 [2024-09-15 19:53:32,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-09-15 19:53:32,843 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 32 treesize of output 20 [2024-09-15 19:53:32,851 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 [2024-09-15 19:53:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-15 19:53:33,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:53:38,302 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 78 treesize of output 62 [2024-09-15 19:53:38,322 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 62 treesize of output 54 [2024-09-15 19:53:38,339 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 54 treesize of output 50 [2024-09-15 19:53:42,565 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_old(#memory_int#7)| |c_func_to_recursive_line_0_to_41_0_#in~x.base|))) (let ((.cse6 (select (select |c_#memory_int#6| |c_func_to_recursive_line_0_to_41_0_#in~X.base|) |c_func_to_recursive_line_0_to_41_0_#in~X.offset|)) (.cse8 (select .cse7 |c_func_to_recursive_line_0_to_41_0_#in~x.offset|))) (and (forall ((|v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_12| Int) (|v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_12| Int) (|v_func_to_recursive_line_0_to_41_0_#in~X.offset_BEFORE_CALL_24| Int) (|v_func_to_recursive_line_0_to_41_0_#in~Y.offset_BEFORE_CALL_20| Int) (|v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_24| Int) (|v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_24| Int) (|v_func_to_recursive_line_0_to_41_0_#in~X.base_BEFORE_CALL_24| Int) (|v_func_to_recursive_line_0_to_41_0_#in~Y.base_BEFORE_CALL_20| Int)) (let ((.cse2 (select (select |c_#memory_int#4| |v_func_to_recursive_line_0_to_41_0_#in~Y.base_BEFORE_CALL_20|) |v_func_to_recursive_line_0_to_41_0_#in~Y.offset_BEFORE_CALL_20|))) (let ((.cse3 (* .cse2 2)) (.cse4 (select (select |c_#memory_int#6| |v_func_to_recursive_line_0_to_41_0_#in~X.base_BEFORE_CALL_24|) |v_func_to_recursive_line_0_to_41_0_#in~X.offset_BEFORE_CALL_24|))) (or (not (let ((.cse0 (select (select (store |c_old(#memory_int#5)| |c_func_to_recursive_line_0_to_41_0_#in~y.base| (let ((.cse9 (select |c_old(#memory_int#5)| |c_func_to_recursive_line_0_to_41_0_#in~y.base|))) (store .cse9 |c_func_to_recursive_line_0_to_41_0_#in~y.offset| (+ 1 (select .cse9 |c_func_to_recursive_line_0_to_41_0_#in~y.offset|))))) |v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_12|) |v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_12|)) (.cse1 (select (select (store |c_old(#memory_int#7)| |c_func_to_recursive_line_0_to_41_0_#in~x.base| (store .cse7 |c_func_to_recursive_line_0_to_41_0_#in~x.offset| (+ .cse8 1))) |v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_28|) |v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_28|))) (= (+ (* .cse0 2) (* (* .cse1 .cse2) 2) .cse3) (+ (* (* .cse0 .cse1) 2) .cse4 (select (select (store |c_old(#memory_int#2)| |c_func_to_recursive_line_0_to_41_0_#in~v.base| (let ((.cse5 (select |c_old(#memory_int#2)| |c_func_to_recursive_line_0_to_41_0_#in~v.base|))) (store .cse5 |c_func_to_recursive_line_0_to_41_0_#in~v.offset| (+ (* (- 2) .cse6) (select .cse5 |c_func_to_recursive_line_0_to_41_0_#in~v.offset|) (* 2 (select (select |c_#memory_int#4| |c_func_to_recursive_line_0_to_41_0_#in~Y.base|) |c_func_to_recursive_line_0_to_41_0_#in~Y.offset|)))))) |v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_24|) |v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_24|))))) (let ((.cse10 (select (select |c_#memory_int#7| |v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_28|) |v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_28|)) (.cse11 (select (select |c_#memory_int#5| |v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_12|) |v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_12|))) (= (+ .cse3 (* (* .cse2 .cse10) 2) (* 2 .cse11)) (+ (select (select |c_#memory_int#2| |v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_24|) |v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_24|) (* 2 (* .cse10 .cse11)) .cse4))))))) (or (forall ((|v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_28| Int) (|v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_12| Int) (|v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_12| Int) (|v_func_to_recursive_line_0_to_41_0_#in~X.offset_BEFORE_CALL_24| Int) (|v_func_to_recursive_line_0_to_41_0_#in~Y.offset_BEFORE_CALL_20| Int) (|v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_24| Int) (|v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_24| Int) (|v_func_to_recursive_line_0_to_41_0_#in~X.base_BEFORE_CALL_24| Int) (|v_func_to_recursive_line_0_to_41_0_#in~Y.base_BEFORE_CALL_20| Int)) (let ((.cse13 (select (select |c_#memory_int#7| |v_func_to_recursive_line_0_to_41_0_#in~x.base_BEFORE_CALL_28|) |v_func_to_recursive_line_0_to_41_0_#in~x.offset_BEFORE_CALL_28|)) (.cse14 (select (select |c_#memory_int#5| |v_func_to_recursive_line_0_to_41_0_#in~y.base_BEFORE_CALL_12|) |v_func_to_recursive_line_0_to_41_0_#in~y.offset_BEFORE_CALL_12|))) (= (let ((.cse12 (select (select |c_#memory_int#4| |v_func_to_recursive_line_0_to_41_0_#in~Y.base_BEFORE_CALL_20|) |v_func_to_recursive_line_0_to_41_0_#in~Y.offset_BEFORE_CALL_20|))) (+ (* .cse12 2) (* (* .cse12 .cse13) 2) (* 2 .cse14))) (+ (select (select |c_#memory_int#2| |v_func_to_recursive_line_0_to_41_0_#in~v.base_BEFORE_CALL_24|) |v_func_to_recursive_line_0_to_41_0_#in~v.offset_BEFORE_CALL_24|) (* 2 (* .cse13 .cse14)) (select (select |c_#memory_int#6| |v_func_to_recursive_line_0_to_41_0_#in~X.base_BEFORE_CALL_24|) |v_func_to_recursive_line_0_to_41_0_#in~X.offset_BEFORE_CALL_24|))))) (= .cse6 .cse8))))) is different from false [2024-09-15 19:53:43,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:53:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411636449] [2024-09-15 19:53:43,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:53:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300231296] [2024-09-15 19:53:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300231296] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:53:43,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:53:43,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-09-15 19:53:43,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020122357] [2024-09-15 19:53:43,780 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-15 19:53:43,780 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 19:53:43,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:53:43,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 19:53:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=580, Unknown=1, NotChecked=48, Total=702 [2024-09-15 19:53:43,781 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 20 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 19:53:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:53:48,792 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2024-09-15 19:53:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-15 19:53:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2024-09-15 19:53:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:53:48,797 INFO L225 Difference]: With dead ends: 61 [2024-09-15 19:53:48,797 INFO L226 Difference]: Without dead ends: 55 [2024-09-15 19:53:48,797 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=116, Invalid=943, Unknown=1, NotChecked=62, Total=1122 [2024-09-15 19:53:48,797 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-09-15 19:53:48,798 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-09-15 19:53:48,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-15 19:53:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-09-15 19:53:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.088235294117647) internal successors, (37), 35 states have internal predecessors, (37), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (17), 9 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-15 19:53:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-09-15 19:53:48,829 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 50 [2024-09-15 19:53:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:53:48,829 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-09-15 19:53:48,829 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 19:53:48,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:53:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-09-15 19:53:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-15 19:53:48,830 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:53:48,831 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:53:48,845 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-15 19:53:49,031 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:53:49,031 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:53:49,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:53:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1218196061, now seen corresponding path program 2 times [2024-09-15 19:53:49,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:53:49,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675967422] [2024-09-15 19:53:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:53:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:53:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:49,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:53:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:49,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:53:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:51,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:53:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:51,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:53:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:52,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:53:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:52,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:53:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:53,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:53:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:53,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:53:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:53,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:53:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:53:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-15 19:53:53,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:53:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675967422] [2024-09-15 19:53:53,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675967422] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:53:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74525710] [2024-09-15 19:53:53,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:53:53,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:53:53,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:53:53,466 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:53:53,470 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-15 19:53:53,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:53:53,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:53:53,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-15 19:53:53,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:53:53,699 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 [2024-09-15 19:53:53,726 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 [2024-09-15 19:53:53,752 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 25 treesize of output 19 [2024-09-15 19:53:53,780 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 [2024-09-15 19:53:53,794 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 [2024-09-15 19:53:53,984 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 15 [2024-09-15 19:53:57,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-09-15 19:53:57,750 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 86 treesize of output 59 [2024-09-15 19:53:57,767 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 38 treesize of output 34 [2024-09-15 19:53:57,788 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