./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-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 5189fb62 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_egcd3-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 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 04:06:56,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 04:06:56,199 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 04:06:56,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 04:06:56,204 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 04:06:56,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 04:06:56,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 04:06:56,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 04:06:56,226 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 04:06:56,227 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 04:06:56,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 04:06:56,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 04:06:56,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 04:06:56,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 04:06:56,228 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 04:06:56,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 04:06:56,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 04:06:56,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 04:06:56,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 04:06:56,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 04:06:56,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 04:06:56,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 04:06:56,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 04:06:56,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 04:06:56,232 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 04:06:56,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 04:06:56,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 04:06:56,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 04:06:56,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 04:06:56,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 04:06:56,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 04:06:56,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 04:06:56,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 04:06:56,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 04:06:56,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 04:06:56,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 04:06:56,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 04:06:56,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 04:06:56,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 04:06:56,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 04:06:56,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 04:06:56,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 04:06:56,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 04:06:56,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 04:06:56,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 04:06:56,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 04:06:56,442 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 04:06:56,442 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 04:06:56,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-09-13 04:06:57,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 04:06:57,760 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 04:06:57,761 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-09-13 04:06:57,768 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d6df8552f/d236969e25944a94baf357bed816f52d/FLAGe9316608b [2024-09-13 04:06:58,186 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d6df8552f/d236969e25944a94baf357bed816f52d [2024-09-13 04:06:58,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 04:06:58,189 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 04:06:58,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 04:06:58,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 04:06:58,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 04:06:58,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709585ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58, skipping insertion in model container [2024-09-13 04:06:58,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 04:06:58,333 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-09-13 04:06:58,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 04:06:58,382 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 04:06:58,393 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-09-13 04:06:58,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 04:06:58,434 INFO L204 MainTranslator]: Completed translation [2024-09-13 04:06:58,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58 WrapperNode [2024-09-13 04:06:58,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 04:06:58,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 04:06:58,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 04:06:58,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 04:06:58,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,454 INFO L138 Inliner]: procedures = 18, calls = 127, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 04:06:58,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 04:06:58,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 04:06:58,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 04:06:58,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 04:06:58,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,482 INFO L175 MemorySlicer]: Split 77 memory accesses to 13 slices as follows [6, 2, 6, 7, 6, 5, 7, 6, 5, 6, 9, 7, 5]. 12 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [2, 0, 2, 2, 2, 2, 1, 2, 2, 2, 2, 1, 2]. [2024-09-13 04:06:58,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 04:06:58,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 04:06:58,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 04:06:58,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 04:06:58,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (1/1) ... [2024-09-13 04:06:58,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 04:06:58,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:06:58,529 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) [2024-09-13 04:06:58,531 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 [2024-09-13 04:06:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 04:06:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 04:06:58,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 04:06:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 04:06:58,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 04:06:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 04:06:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 04:06:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-13 04:06:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-13 04:06:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-13 04:06:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-13 04:06:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-09-13 04:06:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-09-13 04:06:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-09-13 04:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-09-13 04:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-09-13 04:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-09-13 04:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-09-13 04:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-09-13 04:06:58,569 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-09-13 04:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-09-13 04:06:58,569 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-09-13 04:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 04:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-09-13 04:06:58,569 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-09-13 04:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-09-13 04:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 04:06:58,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 04:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 04:06:58,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 04:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 04:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 04:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-13 04:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-13 04:06:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-13 04:06:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-13 04:06:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-09-13 04:06:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-09-13 04:06:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-09-13 04:06:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-09-13 04:06:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-09-13 04:06:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-09-13 04:06:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-09-13 04:06:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 04:06:58,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 04:06:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 04:06:58,707 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 04:06:58,708 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 04:06:58,943 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-13 04:06:58,943 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 04:06:58,962 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 04:06:58,962 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-13 04:06:58,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 04:06:58 BoogieIcfgContainer [2024-09-13 04:06:58,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 04:06:58,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 04:06:58,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 04:06:58,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 04:06:58,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 04:06:58" (1/3) ... [2024-09-13 04:06:58,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35acc9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 04:06:58, skipping insertion in model container [2024-09-13 04:06:58,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:06:58" (2/3) ... [2024-09-13 04:06:58,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35acc9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 04:06:58, skipping insertion in model container [2024-09-13 04:06:58,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 04:06:58" (3/3) ... [2024-09-13 04:06:58,970 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2024-09-13 04:06:58,993 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 04:06:58,994 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 04:06:59,055 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 04:06:59,060 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;@12d49e08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 04:06:59,061 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 04:06:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-13 04:06:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 04:06:59,070 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:06:59,071 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:06:59,071 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:06:59,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:06:59,075 INFO L85 PathProgramCache]: Analyzing trace with hash -107886040, now seen corresponding path program 1 times [2024-09-13 04:06:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:06:59,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002265603] [2024-09-13 04:06:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:06:59,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:06:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:06:59,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:06:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:06:59,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:06:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:06:59,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 04:06:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:06:59,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 04:06:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:06:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:06:59,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:06:59,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002265603] [2024-09-13 04:06:59,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002265603] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 04:06:59,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 04:06:59,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 04:06:59,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914047574] [2024-09-13 04:06:59,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:06:59,341 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 04:06:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:06:59,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 04:06:59,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 04:06:59,359 INFO L87 Difference]: Start difference. First operand has 56 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 04:06:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:06:59,533 INFO L93 Difference]: Finished difference Result 112 states and 157 transitions. [2024-09-13 04:06:59,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 04:06:59,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-13 04:06:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:06:59,542 INFO L225 Difference]: With dead ends: 112 [2024-09-13 04:06:59,542 INFO L226 Difference]: Without dead ends: 58 [2024-09-13 04:06:59,546 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 04:06:59,550 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 04:06:59,551 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 35 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 04:06:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-13 04:06:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2024-09-13 04:06:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 34 states have internal predecessors, (34), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-13 04:06:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2024-09-13 04:06:59,591 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 27 [2024-09-13 04:06:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:06:59,591 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2024-09-13 04:06:59,591 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 04:06:59,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:06:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2024-09-13 04:06:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-13 04:06:59,593 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:06:59,593 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:06:59,593 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 04:06:59,593 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:06:59,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:06:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash -832294486, now seen corresponding path program 1 times [2024-09-13 04:06:59,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:06:59,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362794299] [2024-09-13 04:06:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:06:59,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:06:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:06:59,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:06:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:00,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:07:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:00,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 04:07:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:00,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 04:07:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 04:07:00,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:07:00,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362794299] [2024-09-13 04:07:00,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362794299] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 04:07:00,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 04:07:00,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-13 04:07:00,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013664735] [2024-09-13 04:07:00,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:07:00,140 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 04:07:00,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:07:00,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 04:07:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-09-13 04:07:00,142 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 04:07:00,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:07:00,712 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2024-09-13 04:07:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 04:07:00,713 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2024-09-13 04:07:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:07:00,714 INFO L225 Difference]: With dead ends: 66 [2024-09-13 04:07:00,714 INFO L226 Difference]: Without dead ends: 58 [2024-09-13 04:07:00,715 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-09-13 04:07:00,715 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 04:07:00,716 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 99 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 04:07:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-13 04:07:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-09-13 04:07:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 35 states have internal predecessors, (35), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-13 04:07:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-09-13 04:07:00,726 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 28 [2024-09-13 04:07:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:07:00,727 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-09-13 04:07:00,727 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 04:07:00,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-09-13 04:07:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 04:07:00,729 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:07:00,729 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:07:00,729 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 04:07:00,729 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:07:00,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:00,730 INFO L85 PathProgramCache]: Analyzing trace with hash 701795806, now seen corresponding path program 1 times [2024-09-13 04:07:00,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:07:00,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451698616] [2024-09-13 04:07:00,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:00,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:07:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:07:00,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169791543] [2024-09-13 04:07:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:00,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:00,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:07:00,774 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) [2024-09-13 04:07:00,775 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 04:07:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:00,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-09-13 04:07:00,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:07:01,026 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 [2024-09-13 04:07:01,033 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 [2024-09-13 04:07:01,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:01,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:01,131 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 [2024-09-13 04:07:01,137 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 [2024-09-13 04:07:01,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:01,423 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 [2024-09-13 04:07:01,426 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 [2024-09-13 04:07:01,526 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 [2024-09-13 04:07:01,529 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 22 treesize of output 10 [2024-09-13 04:07:01,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-13 04:07:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 04:07:01,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:07:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:07:02,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:07:02,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451698616] [2024-09-13 04:07:02,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:07:02,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169791543] [2024-09-13 04:07:02,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169791543] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 04:07:02,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:07:02,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 27 [2024-09-13 04:07:02,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912544086] [2024-09-13 04:07:02,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:07:02,039 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 04:07:02,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:07:02,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 04:07:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-09-13 04:07:02,041 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 04:07:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:07:03,086 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2024-09-13 04:07:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 04:07:03,087 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2024-09-13 04:07:03,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:07:03,088 INFO L225 Difference]: With dead ends: 89 [2024-09-13 04:07:03,088 INFO L226 Difference]: Without dead ends: 85 [2024-09-13 04:07:03,089 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2024-09-13 04:07:03,089 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 36 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-13 04:07:03,090 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 392 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-13 04:07:03,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-13 04:07:03,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-09-13 04:07:03,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.12) internal successors, (56), 56 states have internal predecessors, (56), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-13 04:07:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2024-09-13 04:07:03,109 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 32 [2024-09-13 04:07:03,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:07:03,109 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2024-09-13 04:07:03,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 04:07:03,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:03,110 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2024-09-13 04:07:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-13 04:07:03,111 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:07:03,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:07:03,125 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 04:07:03,315 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:03,318 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:07:03,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:03,318 INFO L85 PathProgramCache]: Analyzing trace with hash -630586112, now seen corresponding path program 1 times [2024-09-13 04:07:03,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:07:03,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987800219] [2024-09-13 04:07:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:03,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:07:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:07:03,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119495966] [2024-09-13 04:07:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:03,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:03,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:07:03,350 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) [2024-09-13 04:07:03,351 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 04:07:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:03,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 157 conjuncts are in the unsatisfiable core [2024-09-13 04:07:03,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:07:03,504 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 [2024-09-13 04:07:03,506 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 [2024-09-13 04:07:03,509 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 [2024-09-13 04:07:03,512 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 [2024-09-13 04:07:03,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:03,758 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 [2024-09-13 04:07:03,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-13 04:07:03,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-13 04:07:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:07:03,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:07:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:07:04,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:07:04,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987800219] [2024-09-13 04:07:04,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:07:04,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119495966] [2024-09-13 04:07:04,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119495966] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 04:07:04,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:07:04,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2024-09-13 04:07:04,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016102506] [2024-09-13 04:07:04,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:07:04,105 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 04:07:04,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:07:04,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 04:07:04,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-09-13 04:07:04,106 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 6 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 04:07:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:07:04,914 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2024-09-13 04:07:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 04:07:04,915 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 6 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2024-09-13 04:07:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:07:04,916 INFO L225 Difference]: With dead ends: 91 [2024-09-13 04:07:04,916 INFO L226 Difference]: Without dead ends: 89 [2024-09-13 04:07:04,916 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-09-13 04:07:04,917 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 31 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 04:07:04,917 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 387 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 04:07:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-13 04:07:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2024-09-13 04:07:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 59 states have internal predecessors, (59), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 21 states have call successors, (22) [2024-09-13 04:07:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2024-09-13 04:07:04,935 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 38 [2024-09-13 04:07:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:07:04,936 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2024-09-13 04:07:04,936 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 6 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 04:07:04,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2024-09-13 04:07:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-13 04:07:04,937 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:07:04,937 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:07:04,952 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 04:07:05,137 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:05,138 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:07:05,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1663143179, now seen corresponding path program 1 times [2024-09-13 04:07:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:07:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767576423] [2024-09-13 04:07:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:07:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:05,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:07:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:05,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:07:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:05,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 04:07:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:05,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 04:07:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:05,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 04:07:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:05,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 04:07:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 04:07:05,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:07:05,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767576423] [2024-09-13 04:07:05,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767576423] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:07:05,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049357079] [2024-09-13 04:07:05,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:05,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:05,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:07:05,969 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) [2024-09-13 04:07:05,970 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 04:07:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:06,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-13 04:07:06,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:07:06,179 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 [2024-09-13 04:07:06,180 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 [2024-09-13 04:07:06,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:06,249 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 [2024-09-13 04:07:06,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:06,341 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 [2024-09-13 04:07:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 04:07:06,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:07:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 04:07:06,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049357079] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 04:07:06,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 04:07:06,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 40 [2024-09-13 04:07:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536901715] [2024-09-13 04:07:06,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 04:07:06,880 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-13 04:07:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:07:06,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-13 04:07:06,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1417, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 04:07:06,882 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 40 states, 32 states have (on average 1.8125) internal successors, (58), 34 states have internal predecessors, (58), 15 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (15), 9 states have call predecessors, (15), 14 states have call successors, (15) [2024-09-13 04:07:10,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:07:12,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:07:12,138 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2024-09-13 04:07:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-13 04:07:12,139 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 1.8125) internal successors, (58), 34 states have internal predecessors, (58), 15 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (15), 9 states have call predecessors, (15), 14 states have call successors, (15) Word has length 41 [2024-09-13 04:07:12,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:07:12,140 INFO L225 Difference]: With dead ends: 112 [2024-09-13 04:07:12,140 INFO L226 Difference]: Without dead ends: 104 [2024-09-13 04:07:12,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=401, Invalid=2905, Unknown=0, NotChecked=0, Total=3306 [2024-09-13 04:07:12,144 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 198 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 162 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-09-13 04:07:12,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 95 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1184 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-09-13 04:07:12,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-13 04:07:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2024-09-13 04:07:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1) internal successors, (66), 66 states have internal predecessors, (66), 24 states have call successors, (24), 13 states have call predecessors, (24), 15 states have return successors, (30), 22 states have call predecessors, (30), 22 states have call successors, (30) [2024-09-13 04:07:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2024-09-13 04:07:12,174 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 41 [2024-09-13 04:07:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:07:12,174 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2024-09-13 04:07:12,174 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 1.8125) internal successors, (58), 34 states have internal predecessors, (58), 15 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (15), 9 states have call predecessors, (15), 14 states have call successors, (15) [2024-09-13 04:07:12,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2024-09-13 04:07:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-13 04:07:12,175 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:07:12,175 INFO L216 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:07:12,190 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 04:07:12,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:12,376 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:07:12,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash 467800380, now seen corresponding path program 1 times [2024-09-13 04:07:12,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:07:12,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359823379] [2024-09-13 04:07:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:12,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:07:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:07:12,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682240709] [2024-09-13 04:07:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:12,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:12,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:07:12,411 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) [2024-09-13 04:07:12,412 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 04:07:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:12,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 282 conjuncts are in the unsatisfiable core [2024-09-13 04:07:12,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:07:12,616 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 15 treesize of output 1 [2024-09-13 04:07:12,618 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 [2024-09-13 04:07:12,665 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 [2024-09-13 04:07:12,669 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 [2024-09-13 04:07:12,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:12,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:12,683 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 [2024-09-13 04:07:12,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:12,831 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 [2024-09-13 04:07:13,177 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 [2024-09-13 04:07:13,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:07:13,193 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 51 treesize of output 47 [2024-09-13 04:07:13,223 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-09-13 04:07:13,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 60 [2024-09-13 04:07:13,229 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 45 treesize of output 33 [2024-09-13 04:07:13,287 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-09-13 04:07:13,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 29 [2024-09-13 04:07:14,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:07:14,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 97 [2024-09-13 04:07:14,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:07:14,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 114 [2024-09-13 04:07:14,203 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 [2024-09-13 04:07:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 04:07:14,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:07:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:07:15,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:07:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359823379] [2024-09-13 04:07:15,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:07:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682240709] [2024-09-13 04:07:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682240709] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 04:07:15,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 04:07:15,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20] total 41 [2024-09-13 04:07:15,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643315924] [2024-09-13 04:07:15,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 04:07:15,749 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-13 04:07:15,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:07:15,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-13 04:07:15,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1506, Unknown=0, NotChecked=0, Total=1640 [2024-09-13 04:07:15,750 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 41 states, 34 states have (on average 1.5) internal successors, (51), 28 states have internal predecessors, (51), 13 states have call successors, (18), 13 states have call predecessors, (18), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 04:07:19,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-13 04:07:24,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-09-13 04:07:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:07:38,830 INFO L93 Difference]: Finished difference Result 216 states and 263 transitions. [2024-09-13 04:07:38,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-13 04:07:38,831 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 34 states have (on average 1.5) internal successors, (51), 28 states have internal predecessors, (51), 13 states have call successors, (18), 13 states have call predecessors, (18), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 43 [2024-09-13 04:07:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:07:38,833 INFO L225 Difference]: With dead ends: 216 [2024-09-13 04:07:38,833 INFO L226 Difference]: Without dead ends: 210 [2024-09-13 04:07:38,835 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=584, Invalid=6556, Unknown=0, NotChecked=0, Total=7140 [2024-09-13 04:07:38,835 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 248 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 138 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2024-09-13 04:07:38,837 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 250 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2600 Invalid, 2 Unknown, 0 Unchecked, 16.0s Time] [2024-09-13 04:07:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-09-13 04:07:38,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2024-09-13 04:07:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 124 states have (on average 1.1129032258064515) internal successors, (138), 137 states have internal predecessors, (138), 49 states have call successors, (49), 25 states have call predecessors, (49), 30 states have return successors, (65), 46 states have call predecessors, (65), 47 states have call successors, (65) [2024-09-13 04:07:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 252 transitions. [2024-09-13 04:07:38,925 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 252 transitions. Word has length 43 [2024-09-13 04:07:38,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:07:38,925 INFO L474 AbstractCegarLoop]: Abstraction has 204 states and 252 transitions. [2024-09-13 04:07:38,925 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 34 states have (on average 1.5) internal successors, (51), 28 states have internal predecessors, (51), 13 states have call successors, (18), 13 states have call predecessors, (18), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-13 04:07:38,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 252 transitions. [2024-09-13 04:07:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 04:07:38,930 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:07:38,930 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:07:38,945 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 04:07:39,131 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:39,131 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:07:39,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash 384099232, now seen corresponding path program 1 times [2024-09-13 04:07:39,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:07:39,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855451254] [2024-09-13 04:07:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:39,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:07:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:07:39,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332164050] [2024-09-13 04:07:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:39,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:39,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:07:39,173 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) [2024-09-13 04:07:39,174 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 04:07:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:39,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-09-13 04:07:39,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:07:39,337 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 [2024-09-13 04:07:39,343 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 [2024-09-13 04:07:39,348 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 [2024-09-13 04:07:39,354 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 [2024-09-13 04:07:39,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:39,623 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 [2024-09-13 04:07:39,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-13 04:07:39,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-13 04:07:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-13 04:07:39,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:07:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-13 04:07:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:07:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855451254] [2024-09-13 04:07:39,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:07:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332164050] [2024-09-13 04:07:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332164050] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 04:07:39,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:07:39,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 17 [2024-09-13 04:07:39,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508086915] [2024-09-13 04:07:39,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:07:39,925 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 04:07:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:07:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 04:07:39,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-09-13 04:07:39,926 INFO L87 Difference]: Start difference. First operand 204 states and 252 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 04:07:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:07:40,527 INFO L93 Difference]: Finished difference Result 278 states and 343 transitions. [2024-09-13 04:07:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 04:07:40,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2024-09-13 04:07:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:07:40,530 INFO L225 Difference]: With dead ends: 278 [2024-09-13 04:07:40,530 INFO L226 Difference]: Without dead ends: 276 [2024-09-13 04:07:40,530 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-09-13 04:07:40,531 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 25 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 04:07:40,531 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 351 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 04:07:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-09-13 04:07:40,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2024-09-13 04:07:40,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 166 states have (on average 1.1204819277108433) internal successors, (186), 185 states have internal predecessors, (186), 67 states have call successors, (67), 33 states have call predecessors, (67), 38 states have return successors, (83), 61 states have call predecessors, (83), 65 states have call successors, (83) [2024-09-13 04:07:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 336 transitions. [2024-09-13 04:07:40,641 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 336 transitions. Word has length 44 [2024-09-13 04:07:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:07:40,641 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 336 transitions. [2024-09-13 04:07:40,641 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 04:07:40,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 336 transitions. [2024-09-13 04:07:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-13 04:07:40,642 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:07:40,642 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:07:40,655 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 04:07:40,843 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 04:07:40,843 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:07:40,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:40,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1953297954, now seen corresponding path program 1 times [2024-09-13 04:07:40,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:07:40,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807216486] [2024-09-13 04:07:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:40,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:07:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:07:40,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276992285] [2024-09-13 04:07:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:40,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:40,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:07:40,885 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) [2024-09-13 04:07:40,887 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 04:07:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:41,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 275 conjuncts are in the unsatisfiable core [2024-09-13 04:07:41,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:07:41,113 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 [2024-09-13 04:07:41,115 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 [2024-09-13 04:07:41,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:41,125 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 [2024-09-13 04:07:41,131 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 [2024-09-13 04:07:41,137 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 [2024-09-13 04:07:41,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:41,245 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 [2024-09-13 04:07:41,253 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 [2024-09-13 04:07:41,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:41,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-13 04:07:41,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-13 04:07:41,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-13 04:07:41,431 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 [2024-09-13 04:07:41,438 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 [2024-09-13 04:07:41,443 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 27 treesize of output 19 [2024-09-13 04:07:41,451 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 [2024-09-13 04:07:41,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-13 04:07:41,848 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 [2024-09-13 04:07:41,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-13 04:07:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:07:41,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:07:42,406 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 58 [2024-09-13 04:07:42,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:07:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807216486] [2024-09-13 04:07:42,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:07:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276992285] [2024-09-13 04:07:42,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276992285] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:07:42,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:07:42,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-09-13 04:07:42,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355837243] [2024-09-13 04:07:42,586 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:07:42,586 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 04:07:42,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:07:42,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 04:07:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2024-09-13 04:07:42,587 INFO L87 Difference]: Start difference. First operand 272 states and 336 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-13 04:07:44,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:07:44,340 INFO L93 Difference]: Finished difference Result 296 states and 355 transitions. [2024-09-13 04:07:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 04:07:44,340 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2024-09-13 04:07:44,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:07:44,342 INFO L225 Difference]: With dead ends: 296 [2024-09-13 04:07:44,342 INFO L226 Difference]: Without dead ends: 294 [2024-09-13 04:07:44,343 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=124, Invalid=1066, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 04:07:44,343 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 71 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-13 04:07:44,343 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 413 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-13 04:07:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-09-13 04:07:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 288. [2024-09-13 04:07:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 178 states have (on average 1.1179775280898876) internal successors, (199), 197 states have internal predecessors, (199), 67 states have call successors, (67), 37 states have call predecessors, (67), 42 states have return successors, (83), 61 states have call predecessors, (83), 65 states have call successors, (83) [2024-09-13 04:07:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 349 transitions. [2024-09-13 04:07:44,456 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 349 transitions. Word has length 49 [2024-09-13 04:07:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:07:44,456 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 349 transitions. [2024-09-13 04:07:44,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-13 04:07:44,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 349 transitions. [2024-09-13 04:07:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 04:07:44,457 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:07:44,457 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:07:44,471 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 04:07:44,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:44,658 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:07:44,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:44,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1252856638, now seen corresponding path program 1 times [2024-09-13 04:07:44,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:07:44,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642553541] [2024-09-13 04:07:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:44,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:07:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:07:44,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382040029] [2024-09-13 04:07:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:44,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:44,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:07:44,689 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) [2024-09-13 04:07:44,690 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 04:07:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:44,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-13 04:07:44,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:07:44,878 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 15 treesize of output 11 [2024-09-13 04:07:44,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 04:07:44,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:44,901 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 [2024-09-13 04:07:45,143 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 [2024-09-13 04:07:45,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-13 04:07:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 04:07:45,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:07:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 04:07:45,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:07:45,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642553541] [2024-09-13 04:07:45,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:07:45,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382040029] [2024-09-13 04:07:45,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382040029] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 04:07:45,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:07:45,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-09-13 04:07:45,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241730171] [2024-09-13 04:07:45,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:07:45,323 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 04:07:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:07:45,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 04:07:45,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-13 04:07:45,324 INFO L87 Difference]: Start difference. First operand 288 states and 349 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 04:07:45,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:07:45,716 INFO L93 Difference]: Finished difference Result 334 states and 410 transitions. [2024-09-13 04:07:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 04:07:45,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2024-09-13 04:07:45,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:07:45,719 INFO L225 Difference]: With dead ends: 334 [2024-09-13 04:07:45,719 INFO L226 Difference]: Without dead ends: 332 [2024-09-13 04:07:45,719 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-13 04:07:45,720 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 04:07:45,720 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 307 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 04:07:45,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-09-13 04:07:45,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 296. [2024-09-13 04:07:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 184 states have (on average 1.108695652173913) internal successors, (204), 203 states have internal predecessors, (204), 67 states have call successors, (67), 39 states have call predecessors, (67), 44 states have return successors, (83), 61 states have call predecessors, (83), 65 states have call successors, (83) [2024-09-13 04:07:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 354 transitions. [2024-09-13 04:07:45,859 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 354 transitions. Word has length 50 [2024-09-13 04:07:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:07:45,859 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 354 transitions. [2024-09-13 04:07:45,859 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 04:07:45,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 354 transitions. [2024-09-13 04:07:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-13 04:07:45,860 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:07:45,860 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1] [2024-09-13 04:07:45,875 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 04:07:46,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:46,063 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:07:46,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:07:46,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1729091792, now seen corresponding path program 2 times [2024-09-13 04:07:46,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:07:46,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494824292] [2024-09-13 04:07:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:07:46,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:07:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:46,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:07:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:46,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:07:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:46,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 04:07:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:46,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 04:07:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:46,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 04:07:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:46,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 04:07:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:46,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 04:07:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:46,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 04:07:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:07:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-13 04:07:47,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:07:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494824292] [2024-09-13 04:07:47,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494824292] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:07:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396474042] [2024-09-13 04:07:47,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 04:07:47,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:07:47,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:07:47,072 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) [2024-09-13 04:07:47,083 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 04:07:47,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 04:07:47,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:07:47,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-13 04:07:47,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:07:47,296 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 [2024-09-13 04:07:47,299 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 [2024-09-13 04:07:47,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:47,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:47,715 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 [2024-09-13 04:07:47,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:07:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 04:07:47,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:07:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:07:48,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396474042] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 04:07:48,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 04:07:48,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 36 [2024-09-13 04:07:48,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138154053] [2024-09-13 04:07:48,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 04:07:48,642 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-13 04:07:48,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:07:48,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-13 04:07:48,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 04:07:48,643 INFO L87 Difference]: Start difference. First operand 296 states and 354 transitions. Second operand has 36 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 12 states have call successors, (20), 11 states have call predecessors, (20), 9 states have return successors, (14), 9 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-13 04:07:52,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:07:56,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:08:01,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:08:06,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:08:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:08:06,473 INFO L93 Difference]: Finished difference Result 334 states and 417 transitions. [2024-09-13 04:08:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 04:08:06,474 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 12 states have call successors, (20), 11 states have call predecessors, (20), 9 states have return successors, (14), 9 states have call predecessors, (14), 11 states have call successors, (14) Word has length 54 [2024-09-13 04:08:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:08:06,476 INFO L225 Difference]: With dead ends: 334 [2024-09-13 04:08:06,476 INFO L226 Difference]: Without dead ends: 318 [2024-09-13 04:08:06,476 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=326, Invalid=2026, Unknown=0, NotChecked=0, Total=2352 [2024-09-13 04:08:06,477 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 192 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 146 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2024-09-13 04:08:06,477 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 90 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 903 Invalid, 4 Unknown, 0 Unchecked, 17.1s Time] [2024-09-13 04:08:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-09-13 04:08:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 296. [2024-09-13 04:08:06,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 185 states have (on average 1.1081081081081081) internal successors, (205), 203 states have internal predecessors, (205), 67 states have call successors, (67), 40 states have call predecessors, (67), 43 states have return successors, (81), 60 states have call predecessors, (81), 65 states have call successors, (81) [2024-09-13 04:08:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 353 transitions. [2024-09-13 04:08:06,601 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 353 transitions. Word has length 54 [2024-09-13 04:08:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:08:06,601 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 353 transitions. [2024-09-13 04:08:06,601 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 12 states have call successors, (20), 11 states have call predecessors, (20), 9 states have return successors, (14), 9 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-13 04:08:06,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:08:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 353 transitions. [2024-09-13 04:08:06,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-13 04:08:06,602 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:08:06,602 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:08:06,616 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 04:08:06,803 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:08:06,804 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:08:06,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:08:06,804 INFO L85 PathProgramCache]: Analyzing trace with hash 695004736, now seen corresponding path program 2 times [2024-09-13 04:08:06,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:08:06,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641571846] [2024-09-13 04:08:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:08:06,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:08:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:07,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:08:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:07,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:08:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:07,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 04:08:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:07,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 04:08:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:08,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-13 04:08:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:08,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 04:08:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 04:08:08,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:08:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641571846] [2024-09-13 04:08:08,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641571846] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:08:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692459481] [2024-09-13 04:08:08,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 04:08:08,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:08:08,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:08:08,164 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) [2024-09-13 04:08:08,165 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 04:08:08,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 04:08:08,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:08:08,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-13 04:08:08,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:08:08,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:08:08,503 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 [2024-09-13 04:08:08,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:08:08,591 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 [2024-09-13 04:08:08,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-09-13 04:08:08,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 04:08:08,830 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 40 treesize of output 17 [2024-09-13 04:08:08,950 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 29 treesize of output 21 [2024-09-13 04:08:08,958 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 [2024-09-13 04:08:09,008 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 13 treesize of output 9 [2024-09-13 04:08:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-13 04:08:09,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:08:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:08:09,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692459481] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 04:08:09,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 04:08:09,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2024-09-13 04:08:09,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032185767] [2024-09-13 04:08:09,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 04:08:09,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-13 04:08:09,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:08:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-13 04:08:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 04:08:09,666 INFO L87 Difference]: Start difference. First operand 296 states and 353 transitions. Second operand has 35 states, 30 states have (on average 2.2) internal successors, (66), 25 states have internal predecessors, (66), 11 states have call successors, (24), 9 states have call predecessors, (24), 6 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) [2024-09-13 04:08:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:08:11,600 INFO L93 Difference]: Finished difference Result 440 states and 536 transitions. [2024-09-13 04:08:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-13 04:08:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.2) internal successors, (66), 25 states have internal predecessors, (66), 11 states have call successors, (24), 9 states have call predecessors, (24), 6 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) Word has length 60 [2024-09-13 04:08:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:08:11,602 INFO L225 Difference]: With dead ends: 440 [2024-09-13 04:08:11,602 INFO L226 Difference]: Without dead ends: 302 [2024-09-13 04:08:11,603 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=288, Invalid=2364, Unknown=0, NotChecked=0, Total=2652 [2024-09-13 04:08:11,603 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 95 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-13 04:08:11,604 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 199 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-13 04:08:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-09-13 04:08:11,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 286. [2024-09-13 04:08:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 180 states have (on average 1.0944444444444446) internal successors, (197), 195 states have internal predecessors, (197), 65 states have call successors, (65), 40 states have call predecessors, (65), 40 states have return successors, (74), 58 states have call predecessors, (74), 63 states have call successors, (74) [2024-09-13 04:08:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 336 transitions. [2024-09-13 04:08:11,728 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 336 transitions. Word has length 60 [2024-09-13 04:08:11,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:08:11,729 INFO L474 AbstractCegarLoop]: Abstraction has 286 states and 336 transitions. [2024-09-13 04:08:11,729 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.2) internal successors, (66), 25 states have internal predecessors, (66), 11 states have call successors, (24), 9 states have call predecessors, (24), 6 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) [2024-09-13 04:08:11,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:08:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 336 transitions. [2024-09-13 04:08:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-13 04:08:11,730 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:08:11,730 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:08:11,738 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 04:08:11,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 04:08:11,933 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:08:11,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:08:11,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1254324536, now seen corresponding path program 1 times [2024-09-13 04:08:11,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:08:11,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473629726] [2024-09-13 04:08:11,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:08:11,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:08:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:12,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:08:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:12,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:08:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:12,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 04:08:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:12,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 04:08:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:13,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:08:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:13,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:08:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:13,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:08:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:13,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 04:08:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:13,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-13 04:08:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:13,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-13 04:08:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-13 04:08:13,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:08:13,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473629726] [2024-09-13 04:08:13,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473629726] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 04:08:13,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 04:08:13,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-09-13 04:08:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563380750] [2024-09-13 04:08:13,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:08:13,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 04:08:13,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:08:13,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 04:08:13,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-09-13 04:08:13,223 INFO L87 Difference]: Start difference. First operand 286 states and 336 transitions. Second operand has 13 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 7 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-13 04:08:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:08:14,216 INFO L93 Difference]: Finished difference Result 538 states and 660 transitions. [2024-09-13 04:08:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 04:08:14,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 7 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) Word has length 79 [2024-09-13 04:08:14,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:08:14,218 INFO L225 Difference]: With dead ends: 538 [2024-09-13 04:08:14,218 INFO L226 Difference]: Without dead ends: 338 [2024-09-13 04:08:14,219 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-09-13 04:08:14,220 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 41 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 04:08:14,220 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 250 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 04:08:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-09-13 04:08:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 330. [2024-09-13 04:08:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 208 states have (on average 1.0817307692307692) internal successors, (225), 223 states have internal predecessors, (225), 69 states have call successors, (69), 44 states have call predecessors, (69), 52 states have return successors, (94), 62 states have call predecessors, (94), 67 states have call successors, (94) [2024-09-13 04:08:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 388 transitions. [2024-09-13 04:08:14,371 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 388 transitions. Word has length 79 [2024-09-13 04:08:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:08:14,371 INFO L474 AbstractCegarLoop]: Abstraction has 330 states and 388 transitions. [2024-09-13 04:08:14,371 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 7 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (10), 4 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-13 04:08:14,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:08:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 388 transitions. [2024-09-13 04:08:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-13 04:08:14,372 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:08:14,372 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:08:14,372 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-13 04:08:14,372 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:08:14,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:08:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1050777586, now seen corresponding path program 1 times [2024-09-13 04:08:14,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:08:14,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884308762] [2024-09-13 04:08:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:08:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:08:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:08:14,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041313216] [2024-09-13 04:08:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:08:14,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:08:14,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:08:14,437 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 04:08:14,438 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 04:08:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:08:14,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 282 conjuncts are in the unsatisfiable core [2024-09-13 04:08:14,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:08:14,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 04:08:14,828 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 [2024-09-13 04:08:14,835 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 [2024-09-13 04:08:14,843 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 [2024-09-13 04:08:14,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:08:14,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:08:14,869 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 [2024-09-13 04:08:14,918 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 [2024-09-13 04:08:14,931 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 [2024-09-13 04:08:15,257 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 [2024-09-13 04:08:15,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:08:15,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-13 04:08:15,717 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 [2024-09-13 04:08:15,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:08:15,842 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 [2024-09-13 04:08:29,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2024-09-13 04:08:33,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:08:33,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2024-09-13 04:08:38,184 INFO L349 Elim1Store]: treesize reduction 22, result has 56.0 percent of original size [2024-09-13 04:08:38,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 73 [2024-09-13 04:08:38,277 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 [2024-09-13 04:08:38,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:08:38,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 111 [2024-09-13 04:08:47,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:08:47,979 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 60 treesize of output 52 [2024-09-13 04:08:47,994 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 53 treesize of output 37 [2024-09-13 04:08:48,015 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 [2024-09-13 04:08:48,028 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 [2024-09-13 04:08:48,040 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 [2024-09-13 04:08:48,050 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 13 [2024-09-13 04:08:52,509 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 37 treesize of output 21 [2024-09-13 04:08:52,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:08:52,525 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 29 treesize of output 25 [2024-09-13 04:08:52,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-13 04:08:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-13 04:08:52,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:08:59,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:08:59,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884308762] [2024-09-13 04:08:59,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:08:59,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041313216] [2024-09-13 04:08:59,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041313216] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:08:59,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:08:59,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2024-09-13 04:08:59,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606073477] [2024-09-13 04:08:59,468 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:08:59,468 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-13 04:08:59,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:08:59,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-13 04:08:59,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1564, Unknown=7, NotChecked=0, Total=1722 [2024-09-13 04:08:59,469 INFO L87 Difference]: Start difference. First operand 330 states and 388 transitions. Second operand has 37 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 29 states have internal predecessors, (43), 10 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-13 04:09:03,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:07,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:11,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:20,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:24,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:29,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:33,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:38,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:42,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:46,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:52,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:09:56,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:10:01,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:10:05,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:10:14,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:10:18,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:10:23,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:10:27,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:10:31,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:10:40,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:11:00,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:11:04,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:11:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:11:04,525 INFO L93 Difference]: Finished difference Result 352 states and 423 transitions. [2024-09-13 04:11:04,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-13 04:11:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 29 states have internal predecessors, (43), 10 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) Word has length 78 [2024-09-13 04:11:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:11:04,527 INFO L225 Difference]: With dead ends: 352 [2024-09-13 04:11:04,528 INFO L226 Difference]: Without dead ends: 344 [2024-09-13 04:11:04,528 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 66.4s TimeCoverageRelationStatistics Valid=451, Invalid=4792, Unknown=13, NotChecked=0, Total=5256 [2024-09-13 04:11:04,529 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 80 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.2s IncrementalHoareTripleChecker+Time [2024-09-13 04:11:04,529 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 180 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1635 Invalid, 34 Unknown, 0 Unchecked, 95.2s Time] [2024-09-13 04:11:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-13 04:11:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 334. [2024-09-13 04:11:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 210 states have (on average 1.0809523809523809) internal successors, (227), 225 states have internal predecessors, (227), 70 states have call successors, (70), 44 states have call predecessors, (70), 53 states have return successors, (98), 64 states have call predecessors, (98), 68 states have call successors, (98) [2024-09-13 04:11:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 395 transitions. [2024-09-13 04:11:04,716 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 395 transitions. Word has length 78 [2024-09-13 04:11:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:11:04,717 INFO L474 AbstractCegarLoop]: Abstraction has 334 states and 395 transitions. [2024-09-13 04:11:04,717 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 29 states have internal predecessors, (43), 10 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-13 04:11:04,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:11:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 395 transitions. [2024-09-13 04:11:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-13 04:11:04,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:11:04,718 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:11:04,734 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 04:11:04,918 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-13 04:11:04,919 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:11:04,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:11:04,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1562983877, now seen corresponding path program 1 times [2024-09-13 04:11:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:11:04,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062822335] [2024-09-13 04:11:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:11:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:11:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:11:04,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92783682] [2024-09-13 04:11:04,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:11:04,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:11:04,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:11:04,992 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 04:11:04,992 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 04:11:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:11:05,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 402 conjuncts are in the unsatisfiable core [2024-09-13 04:11:05,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:11:05,339 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 [2024-09-13 04:11:05,344 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 [2024-09-13 04:11:05,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:11:05,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:11:05,401 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 [2024-09-13 04:11:05,413 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 [2024-09-13 04:11:05,425 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 [2024-09-13 04:11:05,437 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 [2024-09-13 04:11:05,602 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 [2024-09-13 04:11:05,619 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 [2024-09-13 04:11:05,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:11:05,699 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 [2024-09-13 04:11:06,089 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 [2024-09-13 04:11:06,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:11:06,230 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 [2024-09-13 04:11:16,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2024-09-13 04:11:20,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:11:20,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2024-09-13 04:11:25,334 INFO L349 Elim1Store]: treesize reduction 22, result has 56.0 percent of original size [2024-09-13 04:11:25,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 73 [2024-09-13 04:11:25,407 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 [2024-09-13 04:11:29,869 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-09-13 04:11:29,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 29 [2024-09-13 04:11:29,878 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-09-13 04:11:29,878 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 15 treesize of output 7 [2024-09-13 04:11:29,909 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2024-09-13 04:11:29,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 31 [2024-09-13 04:11:29,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:11:29,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 111 [2024-09-13 04:11:30,367 INFO L349 Elim1Store]: treesize reduction 230, result has 37.2 percent of original size [2024-09-13 04:11:30,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 161 treesize of output 246 [2024-09-13 04:11:34,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:11:34,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 118 treesize of output 194 [2024-09-13 04:11:34,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:11:34,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 198 treesize of output 214 [2024-09-13 04:11:34,138 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 139 treesize of output 103 [2024-09-13 04:11:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-13 04:11:34,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:11:53,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:11:53,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062822335] [2024-09-13 04:11:53,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:11:53,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92783682] [2024-09-13 04:11:53,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92783682] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:11:53,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:11:53,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2024-09-13 04:11:53,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360999461] [2024-09-13 04:11:53,118 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:11:53,119 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-13 04:11:53,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:11:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-13 04:11:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2575, Unknown=6, NotChecked=0, Total=2756 [2024-09-13 04:11:53,120 INFO L87 Difference]: Start difference. First operand 334 states and 395 transitions. Second operand has 38 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 28 states have internal predecessors, (49), 12 states have call successors, (17), 11 states have call predecessors, (17), 7 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 04:11:58,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:03,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:12,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:16,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:25,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:30,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:35,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:39,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:44,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:48,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:12:52,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:13:12,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:13:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:13:12,816 INFO L93 Difference]: Finished difference Result 428 states and 499 transitions. [2024-09-13 04:13:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-13 04:13:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 28 states have internal predecessors, (49), 12 states have call successors, (17), 11 states have call predecessors, (17), 7 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 86 [2024-09-13 04:13:12,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:13:12,819 INFO L225 Difference]: With dead ends: 428 [2024-09-13 04:13:12,819 INFO L226 Difference]: Without dead ends: 424 [2024-09-13 04:13:12,820 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 58.7s TimeCoverageRelationStatistics Valid=365, Invalid=5177, Unknown=8, NotChecked=0, Total=5550 [2024-09-13 04:13:12,820 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 72 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 55 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.0s IncrementalHoareTripleChecker+Time [2024-09-13 04:13:12,820 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 723 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2275 Invalid, 14 Unknown, 0 Unchecked, 61.0s Time] [2024-09-13 04:13:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-09-13 04:13:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 337. [2024-09-13 04:13:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 213 states have (on average 1.07981220657277) internal successors, (230), 228 states have internal predecessors, (230), 70 states have call successors, (70), 45 states have call predecessors, (70), 53 states have return successors, (95), 65 states have call predecessors, (95), 68 states have call successors, (95) [2024-09-13 04:13:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 395 transitions. [2024-09-13 04:13:13,062 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 395 transitions. Word has length 86 [2024-09-13 04:13:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:13:13,062 INFO L474 AbstractCegarLoop]: Abstraction has 337 states and 395 transitions. [2024-09-13 04:13:13,063 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 28 states have internal predecessors, (49), 12 states have call successors, (17), 11 states have call predecessors, (17), 7 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 04:13:13,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:13:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 395 transitions. [2024-09-13 04:13:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-13 04:13:13,064 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:13:13,064 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:13:13,081 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-13 04:13:13,264 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 04:13:13,265 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:13:13,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:13:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash 434965953, now seen corresponding path program 2 times [2024-09-13 04:13:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:13:13,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59167959] [2024-09-13 04:13:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:13:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:13:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:13:13,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106334491] [2024-09-13 04:13:13,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 04:13:13,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:13:13,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:13:13,314 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 04:13:13,315 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 04:13:13,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 04:13:13,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:13:13,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 423 conjuncts are in the unsatisfiable core [2024-09-13 04:13:13,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:13:13,794 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 [2024-09-13 04:13:13,801 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 [2024-09-13 04:13:13,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:13:13,824 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 [2024-09-13 04:13:13,839 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 [2024-09-13 04:13:13,858 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 [2024-09-13 04:13:13,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:13:14,180 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 [2024-09-13 04:13:14,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:13:14,310 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 [2024-09-13 04:13:14,780 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 [2024-09-13 04:13:14,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-09-13 04:13:14,803 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 [2024-09-13 04:13:14,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2024-09-13 04:13:14,829 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 38 treesize of output 26 [2024-09-13 04:13:14,845 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 [2024-09-13 04:13:15,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:13:15,252 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 [2024-09-13 04:13:15,834 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 11 [2024-09-13 04:13:16,055 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 [2024-09-13 04:13:18,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-09-13 04:13:18,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:13:18,587 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 23 treesize of output 27 [2024-09-13 04:13:18,603 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 35 treesize of output 21 [2024-09-13 04:13:18,823 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 [2024-09-13 04:13:18,837 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 [2024-09-13 04:13:18,854 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 33 treesize of output 25 [2024-09-13 04:13:19,024 INFO L349 Elim1Store]: treesize reduction 22, result has 56.0 percent of original size [2024-09-13 04:13:19,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 66 [2024-09-13 04:13:19,034 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 67 treesize of output 49 [2024-09-13 04:13:19,737 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 [2024-09-13 04:13:19,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2024-09-13 04:13:19,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:13:20,477 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 [2024-09-13 04:13:21,056 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 [2024-09-13 04:13:21,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-13 04:13:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 49 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-13 04:13:21,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:13:26,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:13:26,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59167959] [2024-09-13 04:13:26,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:13:26,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106334491] [2024-09-13 04:13:26,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106334491] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:13:26,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:13:26,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2024-09-13 04:13:26,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360443942] [2024-09-13 04:13:26,337 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:13:26,338 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-13 04:13:26,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:13:26,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-13 04:13:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2024-09-13 04:13:26,339 INFO L87 Difference]: Start difference. First operand 337 states and 395 transitions. Second operand has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 25 states have internal predecessors, (53), 13 states have call successors, (18), 11 states have call predecessors, (18), 7 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 04:13:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:13:42,211 INFO L93 Difference]: Finished difference Result 470 states and 554 transitions. [2024-09-13 04:13:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-13 04:13:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 25 states have internal predecessors, (53), 13 states have call successors, (18), 11 states have call predecessors, (18), 7 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 91 [2024-09-13 04:13:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:13:42,214 INFO L225 Difference]: With dead ends: 470 [2024-09-13 04:13:42,214 INFO L226 Difference]: Without dead ends: 468 [2024-09-13 04:13:42,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=357, Invalid=4613, Unknown=0, NotChecked=0, Total=4970 [2024-09-13 04:13:42,216 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 137 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-09-13 04:13:42,216 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 509 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-09-13 04:13:42,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-09-13 04:13:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 460. [2024-09-13 04:13:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 290 states have (on average 1.0793103448275863) internal successors, (313), 310 states have internal predecessors, (313), 97 states have call successors, (97), 60 states have call predecessors, (97), 72 states have return successors, (133), 90 states have call predecessors, (133), 95 states have call successors, (133) [2024-09-13 04:13:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 543 transitions. [2024-09-13 04:13:42,589 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 543 transitions. Word has length 91 [2024-09-13 04:13:42,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:13:42,589 INFO L474 AbstractCegarLoop]: Abstraction has 460 states and 543 transitions. [2024-09-13 04:13:42,590 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 25 states have internal predecessors, (53), 13 states have call successors, (18), 11 states have call predecessors, (18), 7 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-13 04:13:42,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:13:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 543 transitions. [2024-09-13 04:13:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-13 04:13:42,591 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:13:42,591 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:13:42,612 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-13 04:13:42,791 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 04:13:42,791 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:13:42,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:13:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1471296045, now seen corresponding path program 2 times [2024-09-13 04:13:42,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:13:42,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227287688] [2024-09-13 04:13:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:13:42,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:13:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:44,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 04:13:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:44,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 04:13:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:44,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 04:13:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:44,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 04:13:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:45,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 04:13:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:45,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 04:13:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:46,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 04:13:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:48,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 04:13:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:48,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 04:13:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:48,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 04:13:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:48,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 04:13:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:48,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-13 04:13:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:48,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 04:13:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:49,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-13 04:13:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:13:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-13 04:13:49,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:13:49,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227287688] [2024-09-13 04:13:49,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227287688] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:13:49,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591347855] [2024-09-13 04:13:49,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 04:13:49,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:13:49,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:13:49,623 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 04:13:49,623 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-13 04:13:49,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 04:13:49,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:13:49,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-09-13 04:13:49,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:13:49,911 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 [2024-09-13 04:13:49,917 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 [2024-09-13 04:13:50,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:13:50,495 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 [2024-09-13 04:13:51,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-09-13 04:13:51,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 04:13:51,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:13:52,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:13:52,361 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 [2024-09-13 04:13:52,493 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 29 treesize of output 21 [2024-09-13 04:13:52,793 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 [2024-09-13 04:13:53,073 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 33 treesize of output 25 [2024-09-13 04:13:54,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2024-09-13 04:13:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-13 04:13:54,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:13:59,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-09-13 04:14:00,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591347855] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:14:00,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 04:14:00,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23] total 46 [2024-09-13 04:14:00,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132879054] [2024-09-13 04:14:00,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 04:14:00,574 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-13 04:14:00,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:14:00,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-13 04:14:00,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2842, Unknown=0, NotChecked=0, Total=3080 [2024-09-13 04:14:00,575 INFO L87 Difference]: Start difference. First operand 460 states and 543 transitions. Second operand has 46 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 37 states have internal predecessors, (80), 16 states have call successors, (28), 9 states have call predecessors, (28), 12 states have return successors, (25), 14 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-13 04:14:13,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:14:13,369 INFO L93 Difference]: Finished difference Result 492 states and 599 transitions. [2024-09-13 04:14:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-13 04:14:13,370 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 37 states have internal predecessors, (80), 16 states have call successors, (28), 9 states have call predecessors, (28), 12 states have return successors, (25), 14 states have call predecessors, (25), 15 states have call successors, (25) Word has length 91 [2024-09-13 04:14:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:14:13,373 INFO L225 Difference]: With dead ends: 492 [2024-09-13 04:14:13,374 INFO L226 Difference]: Without dead ends: 480 [2024-09-13 04:14:13,375 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=619, Invalid=6023, Unknown=0, NotChecked=0, Total=6642 [2024-09-13 04:14:13,375 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 123 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-09-13 04:14:13,375 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 149 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-09-13 04:14:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-09-13 04:14:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 474. [2024-09-13 04:14:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 297 states have (on average 1.0774410774410774) internal successors, (320), 317 states have internal predecessors, (320), 99 states have call successors, (99), 60 states have call predecessors, (99), 77 states have return successors, (147), 97 states have call predecessors, (147), 97 states have call successors, (147) [2024-09-13 04:14:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 566 transitions. [2024-09-13 04:14:13,762 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 566 transitions. Word has length 91 [2024-09-13 04:14:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:14:13,762 INFO L474 AbstractCegarLoop]: Abstraction has 474 states and 566 transitions. [2024-09-13 04:14:13,762 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 37 states have internal predecessors, (80), 16 states have call successors, (28), 9 states have call predecessors, (28), 12 states have return successors, (25), 14 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-13 04:14:13,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:14:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 566 transitions. [2024-09-13 04:14:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-13 04:14:13,763 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:14:13,763 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:14:13,773 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-13 04:14:13,964 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-13 04:14:13,964 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:14:13,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:14:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash -896655827, now seen corresponding path program 1 times [2024-09-13 04:14:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:14:13,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36457243] [2024-09-13 04:14:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:14:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:14:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:14:14,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657546650] [2024-09-13 04:14:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:14:14,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:14:14,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:14:14,005 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 04:14:14,006 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-13 04:14:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:14:14,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 209 conjuncts are in the unsatisfiable core [2024-09-13 04:14:14,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:14:14,514 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 [2024-09-13 04:14:14,524 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 [2024-09-13 04:14:14,535 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 [2024-09-13 04:14:14,725 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 [2024-09-13 04:14:14,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:14:15,105 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 11 treesize of output 7 [2024-09-13 04:14:15,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:14:15,288 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 [2024-09-13 04:14:18,350 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 29 treesize of output 17 [2024-09-13 04:14:18,373 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 [2024-09-13 04:14:18,781 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-09-13 04:14:18,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 29 [2024-09-13 04:14:18,812 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 37 treesize of output 29 [2024-09-13 04:14:18,992 INFO L349 Elim1Store]: treesize reduction 24, result has 53.8 percent of original size [2024-09-13 04:14:18,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 57 [2024-09-13 04:14:24,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:14:24,697 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 124 treesize of output 112 [2024-09-13 04:14:24,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:14:24,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 142 [2024-09-13 04:14:25,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:14:25,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 74 treesize of output 166 [2024-09-13 04:14:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 3 proven. 114 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-09-13 04:14:25,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:14:53,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:14:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36457243] [2024-09-13 04:14:53,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:14:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657546650] [2024-09-13 04:14:53,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657546650] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:14:53,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:14:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2024-09-13 04:14:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547627958] [2024-09-13 04:14:53,301 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:14:53,301 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 04:14:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:14:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 04:14:53,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1084, Unknown=6, NotChecked=0, Total=1190 [2024-09-13 04:14:53,302 INFO L87 Difference]: Start difference. First operand 474 states and 566 transitions. Second operand has 27 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 11 states have call successors, (21), 9 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2024-09-13 04:15:00,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:15:08,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-09-13 04:15:15,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:15:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:15:15,566 INFO L93 Difference]: Finished difference Result 523 states and 621 transitions. [2024-09-13 04:15:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-13 04:15:15,567 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 11 states have call successors, (21), 9 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 109 [2024-09-13 04:15:15,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:15:15,569 INFO L225 Difference]: With dead ends: 523 [2024-09-13 04:15:15,569 INFO L226 Difference]: Without dead ends: 521 [2024-09-13 04:15:15,570 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=204, Invalid=2240, Unknown=6, NotChecked=0, Total=2450 [2024-09-13 04:15:15,570 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 55 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 37 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2024-09-13 04:15:15,570 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 642 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1070 Invalid, 3 Unknown, 0 Unchecked, 17.9s Time] [2024-09-13 04:15:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-09-13 04:15:16,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 516. [2024-09-13 04:15:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 324 states have (on average 1.0771604938271604) internal successors, (349), 346 states have internal predecessors, (349), 106 states have call successors, (106), 66 states have call predecessors, (106), 85 states have return successors, (159), 104 states have call predecessors, (159), 104 states have call successors, (159) [2024-09-13 04:15:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 614 transitions. [2024-09-13 04:15:16,010 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 614 transitions. Word has length 109 [2024-09-13 04:15:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:15:16,010 INFO L474 AbstractCegarLoop]: Abstraction has 516 states and 614 transitions. [2024-09-13 04:15:16,011 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 11 states have call successors, (21), 9 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2024-09-13 04:15:16,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:15:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 614 transitions. [2024-09-13 04:15:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-13 04:15:16,012 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:15:16,012 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:15:16,034 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-13 04:15:16,212 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-13 04:15:16,213 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:15:16,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:15:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash -819724195, now seen corresponding path program 1 times [2024-09-13 04:15:16,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:15:16,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495198393] [2024-09-13 04:15:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:15:16,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:15:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:15:16,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281681109] [2024-09-13 04:15:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:15:16,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:15:16,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:15:16,262 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 04:15:16,265 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-13 04:15:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:15:16,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 241 conjuncts are in the unsatisfiable core [2024-09-13 04:15:16,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:15:16,880 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 [2024-09-13 04:15:16,897 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 [2024-09-13 04:15:16,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:15:16,929 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 [2024-09-13 04:15:16,954 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 [2024-09-13 04:15:16,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:15:17,093 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 [2024-09-13 04:15:17,135 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 [2024-09-13 04:15:17,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:15:17,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-13 04:15:18,198 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 [2024-09-13 04:15:18,557 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 [2024-09-13 04:15:18,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:15:18,771 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 [2024-09-13 04:15:21,451 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 29 treesize of output 17 [2024-09-13 04:15:21,495 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 [2024-09-13 04:15:21,734 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 37 treesize of output 29 [2024-09-13 04:15:22,236 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 [2024-09-13 04:15:22,283 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 35 treesize of output 23 [2024-09-13 04:15:22,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-09-13 04:15:24,525 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 13 [2024-09-13 04:15:24,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-09-13 04:15:24,558 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 40 treesize of output 28 [2024-09-13 04:15:24,592 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 [2024-09-13 04:15:24,610 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 [2024-09-13 04:15:24,628 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 [2024-09-13 04:15:24,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:15:24,936 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 35 treesize of output 31 [2024-09-13 04:15:24,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2024-09-13 04:15:24,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-13 04:15:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-13 04:15:25,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:15:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:15:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495198393] [2024-09-13 04:15:33,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:15:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281681109] [2024-09-13 04:15:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281681109] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 04:15:33,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:15:33,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2024-09-13 04:15:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328646511] [2024-09-13 04:15:33,929 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 04:15:33,929 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-13 04:15:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 04:15:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-13 04:15:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-09-13 04:15:33,930 INFO L87 Difference]: Start difference. First operand 516 states and 614 transitions. Second operand has 30 states, 23 states have (on average 2.217391304347826) internal successors, (51), 25 states have internal predecessors, (51), 12 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (17), 10 states have call predecessors, (17), 11 states have call successors, (17) [2024-09-13 04:15:38,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 04:15:51,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:15:51,489 INFO L93 Difference]: Finished difference Result 584 states and 740 transitions. [2024-09-13 04:15:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-13 04:15:51,489 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 23 states have (on average 2.217391304347826) internal successors, (51), 25 states have internal predecessors, (51), 12 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (17), 10 states have call predecessors, (17), 11 states have call successors, (17) Word has length 108 [2024-09-13 04:15:51,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:15:51,492 INFO L225 Difference]: With dead ends: 584 [2024-09-13 04:15:51,492 INFO L226 Difference]: Without dead ends: 576 [2024-09-13 04:15:51,493 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 63 SyntacticMatches, 19 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=269, Invalid=2487, Unknown=0, NotChecked=0, Total=2756 [2024-09-13 04:15:51,493 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 90 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-09-13 04:15:51,493 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 145 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1292 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2024-09-13 04:15:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-09-13 04:15:51,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 522. [2024-09-13 04:15:51,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 327 states have (on average 1.0764525993883791) internal successors, (352), 349 states have internal predecessors, (352), 107 states have call successors, (107), 66 states have call predecessors, (107), 87 states have return successors, (164), 106 states have call predecessors, (164), 105 states have call successors, (164) [2024-09-13 04:15:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 623 transitions. [2024-09-13 04:15:51,947 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 623 transitions. Word has length 108 [2024-09-13 04:15:51,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:15:51,947 INFO L474 AbstractCegarLoop]: Abstraction has 522 states and 623 transitions. [2024-09-13 04:15:51,947 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 23 states have (on average 2.217391304347826) internal successors, (51), 25 states have internal predecessors, (51), 12 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (17), 10 states have call predecessors, (17), 11 states have call successors, (17) [2024-09-13 04:15:51,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:15:51,948 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 623 transitions. [2024-09-13 04:15:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-13 04:15:51,948 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:15:51,948 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:15:51,964 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-13 04:15:52,149 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-13 04:15:52,149 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:15:52,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:15:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2014170787, now seen corresponding path program 3 times [2024-09-13 04:15:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 04:15:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382806951] [2024-09-13 04:15:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:15:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 04:15:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 04:15:52,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217716280] [2024-09-13 04:15:52,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 04:15:52,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:15:52,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:15:52,199 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 04:15:52,201 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-13 04:15:53,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 04:15:53,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 04:15:53,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 503 conjuncts are in the unsatisfiable core [2024-09-13 04:15:53,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:15:53,339 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 [2024-09-13 04:15:53,348 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 [2024-09-13 04:15:53,562 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 [2024-09-13 04:15:53,608 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 [2024-09-13 04:15:53,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:15:53,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:15:53,673 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 [2024-09-13 04:15:53,691 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 [2024-09-13 04:15:54,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:15:54,528 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 [2024-09-13 04:15:54,733 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 [2024-09-13 04:15:55,318 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 [2024-09-13 04:15:55,338 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 [2024-09-13 04:15:55,350 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 42 treesize of output 30 [2024-09-13 04:15:55,359 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 38 treesize of output 26 [2024-09-13 04:15:55,415 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 [2024-09-13 04:15:55,434 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 [2024-09-13 04:15:55,471 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 [2024-09-13 04:15:56,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:15:56,084 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 [2024-09-13 04:15:56,102 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 [2024-09-13 04:15:56,354 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 [2024-09-13 04:15:56,975 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 [2024-09-13 04:15:57,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-13 04:15:57,347 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 [2024-09-13 04:15:59,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-09-13 04:15:59,876 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 [2024-09-13 04:15:59,937 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 35 treesize of output 21 [2024-09-13 04:16:00,360 INFO L349 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2024-09-13 04:16:00,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 27 [2024-09-13 04:16:00,425 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-09-13 04:16:00,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 25 [2024-09-13 04:16:00,465 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 04:16:00,465 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 15 treesize of output 7 [2024-09-13 04:16:00,485 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 33 treesize of output 25 [2024-09-13 04:16:00,609 INFO L349 Elim1Store]: treesize reduction 18, result has 52.6 percent of original size [2024-09-13 04:16:00,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 47 [2024-09-13 04:16:00,748 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-09-13 04:16:00,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 25 [2024-09-13 04:16:20,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:16:20,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 179 treesize of output 651 [2024-09-13 04:16:20,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:16:20,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 140 [2024-09-13 04:16:21,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:16:21,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 287 [2024-09-13 04:16:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-09-13 04:16:32,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:16:51,069 WARN L249 Executor]: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-09-13 04:16:51,070 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-09-13 04:16:51,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 04:16:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382806951] [2024-09-13 04:16:51,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 04:16:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217716280] [2024-09-13 04:16:51,070 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-09-13 04:16:51,082 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-13 04:16:51,270 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 04:16:51,271 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:410) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:327) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:421) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2024-09-13 04:16:51,274 INFO L158 Benchmark]: Toolchain (without parser) took 593085.11ms. Allocated memory was 163.6MB in the beginning and 497.0MB in the end (delta: 333.4MB). Free memory was 130.9MB in the beginning and 368.0MB in the end (delta: -237.1MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. [2024-09-13 04:16:51,275 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 125.8MB. Free memory was 87.5MB in the beginning and 87.3MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 04:16:51,275 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.14ms. Allocated memory is still 163.6MB. Free memory was 130.3MB in the beginning and 117.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 04:16:51,275 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.05ms. Allocated memory is still 163.6MB. Free memory was 117.2MB in the beginning and 116.3MB in the end (delta: 813.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 04:16:51,275 INFO L158 Benchmark]: Boogie Preprocessor took 43.64ms. Allocated memory is still 163.6MB. Free memory was 116.3MB in the beginning and 112.8MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 04:16:51,275 INFO L158 Benchmark]: RCFGBuilder took 463.21ms. Allocated memory is still 163.6MB. Free memory was 112.8MB in the beginning and 83.6MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-09-13 04:16:51,275 INFO L158 Benchmark]: TraceAbstraction took 592309.51ms. Allocated memory was 163.6MB in the beginning and 497.0MB in the end (delta: 333.4MB). Free memory was 82.8MB in the beginning and 368.0MB in the end (delta: -285.2MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2024-09-13 04:16:51,276 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 125.8MB. Free memory was 87.5MB in the beginning and 87.3MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.14ms. Allocated memory is still 163.6MB. Free memory was 130.3MB in the beginning and 117.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.05ms. Allocated memory is still 163.6MB. Free memory was 117.2MB in the beginning and 116.3MB in the end (delta: 813.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.64ms. Allocated memory is still 163.6MB. Free memory was 116.3MB in the beginning and 112.8MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 463.21ms. Allocated memory is still 163.6MB. Free memory was 112.8MB in the beginning and 83.6MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 592309.51ms. Allocated memory was 163.6MB in the beginning and 497.0MB in the end (delta: 333.4MB). Free memory was 82.8MB in the beginning and 368.0MB in the end (delta: -285.2MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_egcd3-ll.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.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 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 04:16:52,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 04:16:52,778 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-13 04:16:52,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 04:16:52,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 04:16:52,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 04:16:52,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 04:16:52,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 04:16:52,809 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 04:16:52,809 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 04:16:52,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 04:16:52,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 04:16:52,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 04:16:52,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 04:16:52,813 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 04:16:52,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 04:16:52,814 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 04:16:52,814 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 04:16:52,814 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 04:16:52,814 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 04:16:52,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 04:16:52,815 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 04:16:52,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 04:16:52,815 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-13 04:16:52,817 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-13 04:16:52,817 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 04:16:52,818 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-13 04:16:52,818 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 04:16:52,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 04:16:52,818 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 04:16:52,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 04:16:52,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 04:16:52,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 04:16:52,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 04:16:52,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 04:16:52,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 04:16:52,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 04:16:52,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 04:16:52,820 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-13 04:16:52,820 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-13 04:16:52,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 04:16:52,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 04:16:52,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 04:16:52,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 04:16:52,821 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-13 04:16:52,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31cf2fabf53e081c3004f39943d7e98ce7bd9dc5e02db94d5bcffe73b0927449 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 04:16:53,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 04:16:53,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 04:16:53,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 04:16:53,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 04:16:53,074 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 04:16:53,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-09-13 04:16:54,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 04:16:54,493 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 04:16:54,493 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c [2024-09-13 04:16:54,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/530595933/d567944ca9d94582a79950547ff3d054/FLAGfd5c8acea [2024-09-13 04:16:54,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/530595933/d567944ca9d94582a79950547ff3d054 [2024-09-13 04:16:54,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 04:16:54,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 04:16:54,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 04:16:54,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 04:16:54,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 04:16:54,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44764500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54, skipping insertion in model container [2024-09-13 04:16:54,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 04:16:54,671 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-09-13 04:16:54,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 04:16:54,722 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 04:16:54,735 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd3-ll.c[1052,1065] [2024-09-13 04:16:54,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 04:16:54,777 INFO L204 MainTranslator]: Completed translation [2024-09-13 04:16:54,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54 WrapperNode [2024-09-13 04:16:54,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 04:16:54,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 04:16:54,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 04:16:54,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 04:16:54,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,796 INFO L138 Inliner]: procedures = 22, calls = 127, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 04:16:54,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 04:16:54,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 04:16:54,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 04:16:54,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 04:16:54,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,833 INFO L175 MemorySlicer]: Split 77 memory accesses to 13 slices as follows [2, 6, 6, 7, 5, 6, 5, 5, 7, 7, 6, 9, 6]. 12 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2]. [2024-09-13 04:16:54,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,847 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 04:16:54,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 04:16:54,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 04:16:54,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 04:16:54,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (1/1) ... [2024-09-13 04:16:54,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 04:16:54,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 04:16:54,890 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) [2024-09-13 04:16:54,892 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 [2024-09-13 04:16:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 04:16:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-13 04:16:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-09-13 04:16:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-09-13 04:16:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-09-13 04:16:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-09-13 04:16:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-09-13 04:16:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-09-13 04:16:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2024-09-13 04:16:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2024-09-13 04:16:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2024-09-13 04:16:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2024-09-13 04:16:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2024-09-13 04:16:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2024-09-13 04:16:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 04:16:54,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 04:16:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 04:16:54,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 04:16:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_47_to_56_0 [2024-09-13 04:16:54,927 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_47_to_56_0 [2024-09-13 04:16:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_70_0 [2024-09-13 04:16:54,927 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_70_0 [2024-09-13 04:16:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 04:16:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_59_0 [2024-09-13 04:16:54,927 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_59_0 [2024-09-13 04:16:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#0 [2024-09-13 04:16:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#1 [2024-09-13 04:16:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#2 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#3 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#4 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#5 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#6 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#7 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#8 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#9 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#10 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#11 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#12 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 04:16:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-09-13 04:16:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 04:16:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#0 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#1 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#2 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#3 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#4 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#5 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#6 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#7 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#8 [2024-09-13 04:16:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#9 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#10 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#11 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#12 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 04:16:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#10 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#11 [2024-09-13 04:16:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#12 [2024-09-13 04:16:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 04:16:55,057 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 04:16:55,059 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 04:16:55,910 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-13 04:16:55,910 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 04:16:55,923 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 04:16:55,924 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-13 04:16:55,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 04:16:55 BoogieIcfgContainer [2024-09-13 04:16:55,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 04:16:55,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 04:16:55,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 04:16:55,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 04:16:55,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 04:16:54" (1/3) ... [2024-09-13 04:16:55,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ede835a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 04:16:55, skipping insertion in model container [2024-09-13 04:16:55,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 04:16:54" (2/3) ... [2024-09-13 04:16:55,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ede835a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 04:16:55, skipping insertion in model container [2024-09-13 04:16:55,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 04:16:55" (3/3) ... [2024-09-13 04:16:55,931 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd3-ll.c [2024-09-13 04:16:55,943 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 04:16:55,943 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 04:16:55,996 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 04:16:56,000 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;@4b9718f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 04:16:56,001 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 04:16:56,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-13 04:16:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 04:16:56,009 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:16:56,009 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:16:56,010 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:16:56,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:16:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash -107886040, now seen corresponding path program 1 times [2024-09-13 04:16:56,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 04:16:56,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615477310] [2024-09-13 04:16:56,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:16:56,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 04:16:56,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 04:16:56,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 04:16:56,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-09-13 04:16:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:16:56,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-13 04:16:56,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:16:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 04:16:56,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 04:16:56,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 04:16:56,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615477310] [2024-09-13 04:16:56,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615477310] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 04:16:56,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 04:16:56,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 04:16:56,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875512473] [2024-09-13 04:16:56,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:16:56,293 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 04:16:56,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 04:16:56,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 04:16:56,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 04:16:56,311 INFO L87 Difference]: Start difference. First operand has 56 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 04:16:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:16:56,344 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2024-09-13 04:16:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 04:16:56,346 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-13 04:16:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:16:56,354 INFO L225 Difference]: With dead ends: 106 [2024-09-13 04:16:56,354 INFO L226 Difference]: Without dead ends: 52 [2024-09-13 04:16:56,358 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 04:16:56,362 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 04:16:56,363 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 04:16:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-13 04:16:56,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-09-13 04:16:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 34 states have internal predecessors, (34), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-13 04:16:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2024-09-13 04:16:56,399 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 27 [2024-09-13 04:16:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:16:56,400 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2024-09-13 04:16:56,400 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 04:16:56,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:16:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2024-09-13 04:16:56,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-13 04:16:56,401 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:16:56,401 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:16:56,411 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-09-13 04:16:56,602 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 04:16:56,602 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:16:56,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:16:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash -832294486, now seen corresponding path program 1 times [2024-09-13 04:16:56,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 04:16:56,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879738950] [2024-09-13 04:16:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:16:56,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 04:16:56,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 04:16:56,606 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 04:16:56,606 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-09-13 04:16:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:16:56,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 04:16:56,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:16:56,965 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 [2024-09-13 04:16:56,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 04:16:56,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2024-09-13 04:16:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 04:16:57,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 04:16:57,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 04:16:57,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879738950] [2024-09-13 04:16:57,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879738950] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 04:16:57,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 04:16:57,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-13 04:16:57,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080255811] [2024-09-13 04:16:57,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:16:57,176 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 04:16:57,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 04:16:57,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 04:16:57,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-13 04:16:57,177 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 04:17:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 04:17:01,042 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-09-13 04:17:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 04:17:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2024-09-13 04:17:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 04:17:01,045 INFO L225 Difference]: With dead ends: 62 [2024-09-13 04:17:01,045 INFO L226 Difference]: Without dead ends: 54 [2024-09-13 04:17:01,045 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-13 04:17:01,046 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 38 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-09-13 04:17:01,046 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 73 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-09-13 04:17:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-13 04:17:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-13 04:17:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 35 states have internal predecessors, (35), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-13 04:17:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-09-13 04:17:01,054 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 28 [2024-09-13 04:17:01,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 04:17:01,055 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-09-13 04:17:01,055 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 04:17:01,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:17:01,055 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-09-13 04:17:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 04:17:01,056 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 04:17:01,056 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 04:17:01,067 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-09-13 04:17:01,256 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 04:17:01,256 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 04:17:01,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 04:17:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash 701795806, now seen corresponding path program 1 times [2024-09-13 04:17:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 04:17:01,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506843849] [2024-09-13 04:17:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 04:17:01,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-13 04:17:01,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 04:17:01,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-13 04:17:01,260 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-09-13 04:17:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 04:17:01,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-09-13 04:17:01,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 04:17:01,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 04:17:01,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2024-09-13 04:17:01,934 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 04:17:01,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-09-13 04:17:01,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 04:17:01,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-09-13 04:17:03,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:17:03,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-09-13 04:17:03,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:17:03,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-09-13 04:17:03,423 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 41 treesize of output 25 [2024-09-13 04:17:03,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 04:17:03,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2024-09-13 04:17:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 04:17:03,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 04:18:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 04:18:49,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 04:18:49,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506843849] [2024-09-13 04:18:49,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506843849] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 04:18:49,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 04:18:49,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2024-09-13 04:18:49,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408861322] [2024-09-13 04:18:49,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 04:18:49,948 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 04:18:49,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 04:18:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 04:18:49,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=627, Unknown=5, NotChecked=0, Total=702 [2024-09-13 04:18:49,949 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 04:18:55,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:18:58,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:01,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:05,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:08,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:10,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:12,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:15,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:18,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:49,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:53,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:19:57,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:02,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:06,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:10,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:14,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:18,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:22,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:26,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:30,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:34,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:38,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:42,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:46,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:49,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:51,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:55,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:20:59,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:21:03,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-09-13 04:21:07,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] Killed by 15