./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/array_2-2-simple.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/array_2-2-simple.i -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 c189c1cb91ea61745da6126e2d9c114f6ae511079741dc75bc227de256009336 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 17:54:53,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 17:54:53,992 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 17:54:54,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 17:54:54,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 17:54:54,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 17:54:54,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 17:54:54,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 17:54:54,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 17:54:54,039 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 17:54:54,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 17:54:54,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 17:54:54,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 17:54:54,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 17:54:54,045 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 17:54:54,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 17:54:54,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 17:54:54,046 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 17:54:54,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 17:54:54,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 17:54:54,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 17:54:54,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 17:54:54,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 17:54:54,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 17:54:54,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 17:54:54,052 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 17:54:54,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 17:54:54,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 17:54:54,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 17:54:54,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 17:54:54,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 17:54:54,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 17:54:54,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 17:54:54,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 17:54:54,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 17:54:54,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 17:54:54,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 17:54:54,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 17:54:54,055 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 17:54:54,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 17:54:54,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 17:54:54,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 17:54:54,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c189c1cb91ea61745da6126e2d9c114f6ae511079741dc75bc227de256009336 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 17:54:54,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 17:54:54,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 17:54:54,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 17:54:54,445 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 17:54:54,445 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 17:54:54,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-acceleration/array_2-2-simple.i [2024-09-12 17:54:56,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 17:54:56,279 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 17:54:56,279 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/array_2-2-simple.i [2024-09-12 17:54:56,287 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0a523ddaa/d34e0bc23bc24ef18971c41182dc5efc/FLAGdf2ee8da7 [2024-09-12 17:54:56,302 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0a523ddaa/d34e0bc23bc24ef18971c41182dc5efc [2024-09-12 17:54:56,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 17:54:56,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 17:54:56,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 17:54:56,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 17:54:56,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 17:54:56,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aac21f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56, skipping insertion in model container [2024-09-12 17:54:56,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 17:54:56,499 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/loop-acceleration/array_2-2-simple.i[809,822] [2024-09-12 17:54:56,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 17:54:56,539 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 17:54:56,553 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/loop-acceleration/array_2-2-simple.i[809,822] [2024-09-12 17:54:56,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 17:54:56,578 INFO L204 MainTranslator]: Completed translation [2024-09-12 17:54:56,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56 WrapperNode [2024-09-12 17:54:56,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 17:54:56,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 17:54:56,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 17:54:56,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 17:54:56,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,602 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 17:54:56,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 17:54:56,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 17:54:56,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 17:54:56,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 17:54:56,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,633 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 5 writes are split as follows [0, 2, 3]. [2024-09-12 17:54:56,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 17:54:56,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 17:54:56,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 17:54:56,664 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 17:54:56,665 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (1/1) ... [2024-09-12 17:54:56,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 17:54:56,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:56,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 17:54:56,713 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 17:54:56,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 17:54:56,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 17:54:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 17:54:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 17:54:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 17:54:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 17:54:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-09-12 17:54:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-09-12 17:54:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-09-12 17:54:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 17:54:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 17:54:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 17:54:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 17:54:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 17:54:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 17:54:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 17:54:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 17:54:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 17:54:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 17:54:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 17:54:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 17:54:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 17:54:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 17:54:56,868 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 17:54:56,870 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 17:54:57,034 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-12 17:54:57,034 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 17:54:57,062 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 17:54:57,062 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 17:54:57,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 05:54:57 BoogieIcfgContainer [2024-09-12 17:54:57,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 17:54:57,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 17:54:57,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 17:54:57,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 17:54:57,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 05:54:56" (1/3) ... [2024-09-12 17:54:57,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a9f63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 05:54:57, skipping insertion in model container [2024-09-12 17:54:57,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:56" (2/3) ... [2024-09-12 17:54:57,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a9f63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 05:54:57, skipping insertion in model container [2024-09-12 17:54:57,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 05:54:57" (3/3) ... [2024-09-12 17:54:57,071 INFO L112 eAbstractionObserver]: Analyzing ICFG array_2-2-simple.i [2024-09-12 17:54:57,089 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 17:54:57,089 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-12 17:54:57,141 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 17:54:57,147 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;@338b4b2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 17:54:57,148 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-12 17:54:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 17:54:57,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-12 17:54:57,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:57,158 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:57,159 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:57,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:57,164 INFO L85 PathProgramCache]: Analyzing trace with hash -55690185, now seen corresponding path program 1 times [2024-09-12 17:54:57,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:57,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862285198] [2024-09-12 17:54:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:57,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:57,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:57,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862285198] [2024-09-12 17:54:57,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862285198] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:54:57,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:54:57,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 17:54:57,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781833494] [2024-09-12 17:54:57,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:57,471 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 17:54:57,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 17:54:57,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 17:54:57,492 INFO L87 Difference]: Start difference. First operand has 22 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:57,562 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-09-12 17:54:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 17:54:57,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2024-09-12 17:54:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:57,578 INFO L225 Difference]: With dead ends: 39 [2024-09-12 17:54:57,579 INFO L226 Difference]: Without dead ends: 19 [2024-09-12 17:54:57,583 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 17:54:57,587 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:57,590 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-12 17:54:57,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-09-12 17:54:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-09-12 17:54:57,632 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 7 [2024-09-12 17:54:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:57,635 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-09-12 17:54:57,635 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:57,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-09-12 17:54:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 17:54:57,638 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:57,638 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:57,638 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 17:54:57,638 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:57,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1208880459, now seen corresponding path program 1 times [2024-09-12 17:54:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:57,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611200583] [2024-09-12 17:54:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:57,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:57,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611200583] [2024-09-12 17:54:57,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611200583] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316597002] [2024-09-12 17:54:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:57,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:57,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:57,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:54:57,889 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 17:54:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:57,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 17:54:57,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:58,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 17:54:58,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316597002] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:54:58,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 17:54:58,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 17:54:58,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848973205] [2024-09-12 17:54:58,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:58,046 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 17:54:58,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:58,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 17:54:58,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 17:54:58,048 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:58,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:58,097 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2024-09-12 17:54:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 17:54:58,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 17:54:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:58,100 INFO L225 Difference]: With dead ends: 19 [2024-09-12 17:54:58,100 INFO L226 Difference]: Without dead ends: 18 [2024-09-12 17:54:58,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 17:54:58,102 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:58,103 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-12 17:54:58,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-12 17:54:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-09-12 17:54:58,117 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2024-09-12 17:54:58,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:58,117 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-09-12 17:54:58,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:58,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:58,118 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-09-12 17:54:58,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 17:54:58,122 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:58,122 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:58,137 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 17:54:58,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:58,323 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:58,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1179411479, now seen corresponding path program 1 times [2024-09-12 17:54:58,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:58,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948233407] [2024-09-12 17:54:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:58,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:54:58,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:58,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948233407] [2024-09-12 17:54:58,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948233407] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:54:58,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:54:58,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 17:54:58,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740290192] [2024-09-12 17:54:58,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:54:58,406 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 17:54:58,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:58,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 17:54:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:54:58,408 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:58,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:58,426 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2024-09-12 17:54:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 17:54:58,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 17:54:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:58,428 INFO L225 Difference]: With dead ends: 18 [2024-09-12 17:54:58,428 INFO L226 Difference]: Without dead ends: 17 [2024-09-12 17:54:58,429 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:54:58,430 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:58,431 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-12 17:54:58,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2024-09-12 17:54:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:58,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-09-12 17:54:58,440 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2024-09-12 17:54:58,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:58,441 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-09-12 17:54:58,441 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:58,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-09-12 17:54:58,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 17:54:58,442 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:58,443 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:58,443 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 17:54:58,443 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:58,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:58,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1933294681, now seen corresponding path program 1 times [2024-09-12 17:54:58,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:58,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406405068] [2024-09-12 17:54:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:58,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:58,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:58,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:58,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406405068] [2024-09-12 17:54:58,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406405068] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:58,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917795380] [2024-09-12 17:54:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:58,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:58,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:58,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:54:58,556 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 17:54:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:58,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 17:54:58,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:58,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:58,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917795380] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:54:58,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:54:58,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-12 17:54:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104031424] [2024-09-12 17:54:58,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:54:58,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 17:54:58,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:58,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 17:54:58,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 17:54:58,736 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:58,778 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-09-12 17:54:58,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 17:54:58,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-12 17:54:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:58,782 INFO L225 Difference]: With dead ends: 27 [2024-09-12 17:54:58,782 INFO L226 Difference]: Without dead ends: 21 [2024-09-12 17:54:58,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 17:54:58,784 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:58,786 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:58,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-12 17:54:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-12 17:54:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-09-12 17:54:58,797 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2024-09-12 17:54:58,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:58,798 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-09-12 17:54:58,798 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:58,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-09-12 17:54:58,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 17:54:58,799 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:58,800 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:58,817 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 17:54:59,000 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:59,001 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:59,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash -260338407, now seen corresponding path program 2 times [2024-09-12 17:54:59,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:59,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523003899] [2024-09-12 17:54:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:59,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:59,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523003899] [2024-09-12 17:54:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523003899] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209193315] [2024-09-12 17:54:59,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:54:59,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:59,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:54:59,152 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 17:54:59,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:54:59,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:54:59,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 17:54:59,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:54:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:59,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:54:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:59,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209193315] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:54:59,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:54:59,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-09-12 17:54:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626041290] [2024-09-12 17:54:59,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:54:59,380 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 17:54:59,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:54:59,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 17:54:59,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-09-12 17:54:59,382 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:54:59,438 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-09-12 17:54:59,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 17:54:59,439 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-09-12 17:54:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:54:59,440 INFO L225 Difference]: With dead ends: 39 [2024-09-12 17:54:59,440 INFO L226 Difference]: Without dead ends: 33 [2024-09-12 17:54:59,441 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-09-12 17:54:59,441 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:54:59,442 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:54:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-12 17:54:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-12 17:54:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2024-09-12 17:54:59,454 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 20 [2024-09-12 17:54:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:54:59,454 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2024-09-12 17:54:59,454 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:54:59,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2024-09-12 17:54:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 17:54:59,456 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:54:59,457 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:54:59,473 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 17:54:59,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:59,658 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:54:59,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:54:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash -308773223, now seen corresponding path program 3 times [2024-09-12 17:54:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:54:59,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275478287] [2024-09-12 17:54:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:54:59,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:54:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:59,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:54:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:54:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:54:59,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:54:59,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275478287] [2024-09-12 17:54:59,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275478287] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:54:59,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213710484] [2024-09-12 17:54:59,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 17:54:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:54:59,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:54:59,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:54:59,961 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 17:55:00,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-09-12 17:55:00,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:00,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 17:55:00,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:00,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:00,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213710484] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:00,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:00,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-09-12 17:55:00,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553205311] [2024-09-12 17:55:00,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:00,471 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 17:55:00,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:00,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 17:55:00,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 17:55:00,476 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:00,588 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2024-09-12 17:55:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 17:55:00,589 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-09-12 17:55:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:00,591 INFO L225 Difference]: With dead ends: 63 [2024-09-12 17:55:00,591 INFO L226 Difference]: Without dead ends: 57 [2024-09-12 17:55:00,592 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 17:55:00,593 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:00,593 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:55:00,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-12 17:55:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-12 17:55:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2024-09-12 17:55:00,605 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 32 [2024-09-12 17:55:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:00,605 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2024-09-12 17:55:00,605 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:00,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2024-09-12 17:55:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 17:55:00,607 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:00,607 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:00,621 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 17:55:00,809 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:00,809 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:00,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:00,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1256742503, now seen corresponding path program 4 times [2024-09-12 17:55:00,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:00,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934510449] [2024-09-12 17:55:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:00,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:01,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:01,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934510449] [2024-09-12 17:55:01,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934510449] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:01,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099332994] [2024-09-12 17:55:01,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 17:55:01,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:01,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:01,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:55:01,668 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 17:55:01,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 17:55:01,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:01,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 17:55:01,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:01,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:02,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099332994] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:02,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:02,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2024-09-12 17:55:02,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003324210] [2024-09-12 17:55:02,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:02,891 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-12 17:55:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:02,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-12 17:55:02,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 17:55:02,895 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:03,090 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2024-09-12 17:55:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-12 17:55:03,093 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-09-12 17:55:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:03,094 INFO L225 Difference]: With dead ends: 111 [2024-09-12 17:55:03,094 INFO L226 Difference]: Without dead ends: 105 [2024-09-12 17:55:03,096 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 17:55:03,099 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:03,100 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:55:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-12 17:55:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-09-12 17:55:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.01) internal successors, (101), 100 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2024-09-12 17:55:03,128 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 56 [2024-09-12 17:55:03,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:03,129 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2024-09-12 17:55:03,129 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:03,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2024-09-12 17:55:03,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 17:55:03,135 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:03,137 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:03,157 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 17:55:03,341 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 17:55:03,342 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:03,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:03,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1202382745, now seen corresponding path program 5 times [2024-09-12 17:55:03,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:03,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115153147] [2024-09-12 17:55:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:03,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:05,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:05,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:05,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115153147] [2024-09-12 17:55:05,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115153147] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:05,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607270288] [2024-09-12 17:55:05,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 17:55:05,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:05,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:05,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 17:55:05,705 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 17:55:06,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2024-09-12 17:55:06,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:06,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 17:55:06,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:06,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607270288] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:09,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:09,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2024-09-12 17:55:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795082906] [2024-09-12 17:55:09,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:09,998 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2024-09-12 17:55:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:10,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2024-09-12 17:55:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2024-09-12 17:55:10,007 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand has 130 states, 130 states have (on average 1.5307692307692307) internal successors, (199), 130 states have internal predecessors, (199), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:10,338 INFO L93 Difference]: Finished difference Result 207 states and 238 transitions. [2024-09-12 17:55:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-09-12 17:55:10,344 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.5307692307692307) internal successors, (199), 130 states have internal predecessors, (199), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2024-09-12 17:55:10,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:10,347 INFO L225 Difference]: With dead ends: 207 [2024-09-12 17:55:10,350 INFO L226 Difference]: Without dead ends: 201 [2024-09-12 17:55:10,359 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5206 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2024-09-12 17:55:10,360 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:10,360 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 17:55:10,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-12 17:55:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-09-12 17:55:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 196 states have (on average 1.0051020408163265) internal successors, (197), 196 states have internal predecessors, (197), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2024-09-12 17:55:10,383 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 104 [2024-09-12 17:55:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:10,383 INFO L474 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2024-09-12 17:55:10,384 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.5307692307692307) internal successors, (199), 130 states have internal predecessors, (199), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:10,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:10,384 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2024-09-12 17:55:10,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-09-12 17:55:10,386 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:10,387 INFO L216 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:10,406 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 17:55:10,587 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 [2024-09-12 17:55:10,588 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:55:10,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1864725401, now seen corresponding path program 6 times [2024-09-12 17:55:10,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:10,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942986084] [2024-09-12 17:55:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:10,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:17,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:17,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:17,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942986084] [2024-09-12 17:55:17,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942986084] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:17,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429507762] [2024-09-12 17:55:17,589 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 17:55:17,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:17,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:17,591 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) [2024-09-12 17:55:17,600 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 17:57:06,444 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2024-09-12 17:57:06,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:57:06,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-12 17:57:06,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:57:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:57:06,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:57:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:57:17,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429507762] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:57:17,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:57:17,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 258 [2024-09-12 17:57:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938732468] [2024-09-12 17:57:17,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:57:17,004 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2024-09-12 17:57:17,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:57:17,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2024-09-12 17:57:17,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16770, Invalid=49536, Unknown=0, NotChecked=0, Total=66306 [2024-09-12 17:57:17,016 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand has 258 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 258 states have internal predecessors, (391), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:57:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:57:17,719 INFO L93 Difference]: Finished difference Result 399 states and 462 transitions. [2024-09-12 17:57:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2024-09-12 17:57:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 258 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 258 states have internal predecessors, (391), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 200 [2024-09-12 17:57:17,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:57:17,722 INFO L225 Difference]: With dead ends: 399 [2024-09-12 17:57:17,722 INFO L226 Difference]: Without dead ends: 393 [2024-09-12 17:57:17,725 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20662 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=16770, Invalid=49536, Unknown=0, NotChecked=0, Total=66306 [2024-09-12 17:57:17,726 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 17:57:17,726 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 17:57:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-09-12 17:57:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2024-09-12 17:57:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 388 states have (on average 1.0025773195876289) internal successors, (389), 388 states have internal predecessors, (389), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:57:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2024-09-12 17:57:17,766 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 200 [2024-09-12 17:57:17,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:57:17,767 INFO L474 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2024-09-12 17:57:17,767 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 258 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 258 states have internal predecessors, (391), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:57:17,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2024-09-12 17:57:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-09-12 17:57:17,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:57:17,774 INFO L216 NwaCegarLoop]: trace histogram [127, 127, 127, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:57:17,848 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 17:57:17,974 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 [2024-09-12 17:57:17,975 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:57:17,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1735035801, now seen corresponding path program 7 times [2024-09-12 17:57:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:57:17,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497925401] [2024-09-12 17:57:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:57:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:57:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:57:43,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:57:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:57:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 24130 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:57:43,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:57:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497925401] [2024-09-12 17:57:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497925401] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:57:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198497537] [2024-09-12 17:57:43,052 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 17:57:43,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:57:43,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:57:43,053 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) [2024-09-12 17:57:43,054 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 17:57:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:57:43,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 256 conjuncts are in the unsatisfiable core [2024-09-12 17:57:43,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:57:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 24130 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:57:43,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:58:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 24130 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:58:25,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198497537] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:58:25,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:58:25,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 257, 257] total 514 [2024-09-12 17:58:25,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456660969] [2024-09-12 17:58:25,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:58:25,212 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 514 states [2024-09-12 17:58:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:58:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 514 interpolants. [2024-09-12 17:58:25,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66306, Invalid=197376, Unknown=0, NotChecked=0, Total=263682 [2024-09-12 17:58:25,236 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand has 514 states, 514 states have (on average 1.5077821011673151) internal successors, (775), 514 states have internal predecessors, (775), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:58:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:58:28,671 INFO L93 Difference]: Finished difference Result 783 states and 910 transitions. [2024-09-12 17:58:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2024-09-12 17:58:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 514 states, 514 states have (on average 1.5077821011673151) internal successors, (775), 514 states have internal predecessors, (775), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 392 [2024-09-12 17:58:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:58:28,676 INFO L225 Difference]: With dead ends: 783 [2024-09-12 17:58:28,676 INFO L226 Difference]: Without dead ends: 777 [2024-09-12 17:58:28,685 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 512 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82294 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=66306, Invalid=197376, Unknown=0, NotChecked=0, Total=263682 [2024-09-12 17:58:28,686 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 17:58:28,686 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 17:58:28,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-09-12 17:58:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2024-09-12 17:58:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 772 states have (on average 1.0012953367875648) internal successors, (773), 772 states have internal predecessors, (773), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:58:28,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 777 transitions. [2024-09-12 17:58:28,736 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 777 transitions. Word has length 392 [2024-09-12 17:58:28,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:58:28,736 INFO L474 AbstractCegarLoop]: Abstraction has 777 states and 777 transitions. [2024-09-12 17:58:28,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 514 states, 514 states have (on average 1.5077821011673151) internal successors, (775), 514 states have internal predecessors, (775), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:58:28,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:58:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 777 transitions. [2024-09-12 17:58:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2024-09-12 17:58:28,752 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:58:28,752 INFO L216 NwaCegarLoop]: trace histogram [255, 255, 255, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:58:28,771 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 17:58:28,956 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 [2024-09-12 17:58:28,957 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 17:58:28,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:58:28,957 INFO L85 PathProgramCache]: Analyzing trace with hash -46875751, now seen corresponding path program 8 times [2024-09-12 17:58:28,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:58:28,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529583563] [2024-09-12 17:58:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:58:28,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:58:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat