./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 58e0ac80b52681cc0cdead13de3f6425618df79dffe8d2a1da55e71c89383d0a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:39:43,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:39:43,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:39:43,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:39:43,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:39:43,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:39:43,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:39:43,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:39:43,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:39:43,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:39:43,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:39:43,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:39:43,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:39:43,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:39:43,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:39:44,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:39:44,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:39:44,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:39:44,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:39:44,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:39:44,019 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:39:44,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:39:44,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:39:44,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:39:44,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:39:44,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:39:44,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:39:44,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:39:44,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:39:44,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:39:44,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:39:44,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:39:44,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:39:44,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:39:44,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:39:44,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:39:44,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:39:44,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:39:44,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:39:44,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:39:44,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:39:44,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:39:44,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:39:44,076 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:39:44,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:39:44,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:39:44,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:39:44,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:39:44,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:39:44,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:39:44,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:39:44,079 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:39:44,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:39:44,080 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:39:44,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:39:44,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:39:44,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:39:44,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:39:44,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:39:44,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:39:44,081 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:39:44,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:39:44,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:39:44,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:39:44,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:39:44,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:39:44,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:39:44,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:39:44,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:39:44,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:39:44,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:39:44,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:39:44,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:39:44,085 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:39:44,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:39:44,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:39:44,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58e0ac80b52681cc0cdead13de3f6425618df79dffe8d2a1da55e71c89383d0a [2022-07-22 16:39:44,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:39:44,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:39:44,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:39:44,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:39:44,366 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:39:44,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-07-22 16:39:44,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d8c956f/d0ed6698079b4872b45ffc6e4edd4715/FLAG6db088c9c [2022-07-22 16:39:44,838 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:39:44,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2022-07-22 16:39:44,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d8c956f/d0ed6698079b4872b45ffc6e4edd4715/FLAG6db088c9c [2022-07-22 16:39:45,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d8c956f/d0ed6698079b4872b45ffc6e4edd4715 [2022-07-22 16:39:45,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:39:45,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:39:45,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:39:45,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:39:45,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:39:45,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e79e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45, skipping insertion in model container [2022-07-22 16:39:45,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:39:45,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:39:45,411 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2022-07-22 16:39:45,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:39:45,434 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:39:45,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2022-07-22 16:39:45,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:39:45,460 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:39:45,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45 WrapperNode [2022-07-22 16:39:45,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:39:45,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:39:45,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:39:45,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:39:45,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,494 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-07-22 16:39:45,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:39:45,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:39:45,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:39:45,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:39:45,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:39:45,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:39:45,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:39:45,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:39:45,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (1/1) ... [2022-07-22 16:39:45,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:39:45,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:39:45,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 16:39:45,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 16:39:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:39:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 16:39:45,589 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 16:39:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:39:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:39:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:39:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 16:39:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 16:39:45,646 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:39:45,648 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:39:45,808 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:39:45,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:39:45,814 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 16:39:45,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:39:45 BoogieIcfgContainer [2022-07-22 16:39:45,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:39:45,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:39:45,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:39:45,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:39:45,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:39:45" (1/3) ... [2022-07-22 16:39:45,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42533b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:39:45, skipping insertion in model container [2022-07-22 16:39:45,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:39:45" (2/3) ... [2022-07-22 16:39:45,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42533b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:39:45, skipping insertion in model container [2022-07-22 16:39:45,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:39:45" (3/3) ... [2022-07-22 16:39:45,841 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2022-07-22 16:39:45,854 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:39:45,855 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:39:45,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:39:45,917 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@581cbe98, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6103d56d [2022-07-22 16:39:45,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:39:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 16:39:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 16:39:45,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:39:45,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:39:45,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:39:45,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:39:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times [2022-07-22 16:39:45,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:39:45,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106765337] [2022-07-22 16:39:45,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:39:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:39:46,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:39:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:39:46,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:39:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:39:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:39:46,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:39:46,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106765337] [2022-07-22 16:39:46,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106765337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:39:46,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:39:46,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 16:39:46,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913504347] [2022-07-22 16:39:46,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:39:46,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 16:39:46,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:39:46,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 16:39:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 16:39:46,183 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 16:39:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:39:46,203 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-07-22 16:39:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 16:39:46,206 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-22 16:39:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:39:46,212 INFO L225 Difference]: With dead ends: 47 [2022-07-22 16:39:46,213 INFO L226 Difference]: Without dead ends: 21 [2022-07-22 16:39:46,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 16:39:46,221 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:39:46,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:39:46,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-22 16:39:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-22 16:39:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 16:39:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-07-22 16:39:46,262 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2022-07-22 16:39:46,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:39:46,263 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-07-22 16:39:46,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 16:39:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-07-22 16:39:46,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 16:39:46,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:39:46,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:39:46,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 16:39:46,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:39:46,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:39:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1345709874, now seen corresponding path program 1 times [2022-07-22 16:39:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:39:46,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819564272] [2022-07-22 16:39:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:46,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:39:46,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:39:46,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175232697] [2022-07-22 16:39:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:46,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:46,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:39:46,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:39:46,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 16:39:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:39:46,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:39:46,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:39:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:39:46,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:39:46,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:39:46,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819564272] [2022-07-22 16:39:46,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:39:46,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175232697] [2022-07-22 16:39:46,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175232697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:39:46,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:39:46,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 16:39:46,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374393480] [2022-07-22 16:39:46,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:39:46,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:39:46,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:39:46,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:39:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 16:39:46,482 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:39:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:39:46,506 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-22 16:39:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:39:46,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-22 16:39:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:39:46,511 INFO L225 Difference]: With dead ends: 30 [2022-07-22 16:39:46,511 INFO L226 Difference]: Without dead ends: 23 [2022-07-22 16:39:46,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 16:39:46,513 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:39:46,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:39:46,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-22 16:39:46,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-22 16:39:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 16:39:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-22 16:39:46,532 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2022-07-22 16:39:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:39:46,534 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-22 16:39:46,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:39:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-22 16:39:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 16:39:46,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:39:46,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:39:46,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 16:39:46,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:46,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:39:46,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:39:46,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1347497334, now seen corresponding path program 1 times [2022-07-22 16:39:46,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:39:46,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929114882] [2022-07-22 16:39:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:46,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:39:46,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:39:46,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369693806] [2022-07-22 16:39:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:46,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:46,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:39:46,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:39:46,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 16:39:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:39:46,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 16:39:46,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:39:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 16:39:47,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:39:47,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:39:47,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929114882] [2022-07-22 16:39:47,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:39:47,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369693806] [2022-07-22 16:39:47,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369693806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:39:47,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:39:47,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 16:39:47,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088011205] [2022-07-22 16:39:47,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:39:47,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:39:47,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:39:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:39:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:39:47,089 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:39:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:39:47,229 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-07-22 16:39:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:39:47,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-22 16:39:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:39:47,231 INFO L225 Difference]: With dead ends: 33 [2022-07-22 16:39:47,231 INFO L226 Difference]: Without dead ends: 31 [2022-07-22 16:39:47,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:39:47,232 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:39:47,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 72 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:39:47,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-22 16:39:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-07-22 16:39:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 16:39:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-07-22 16:39:47,240 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2022-07-22 16:39:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:39:47,240 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-07-22 16:39:47,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 16:39:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-07-22 16:39:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 16:39:47,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:39:47,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:39:47,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 16:39:47,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 16:39:47,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:39:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:39:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1636478750, now seen corresponding path program 1 times [2022-07-22 16:39:47,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:39:47,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307800923] [2022-07-22 16:39:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:47,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:39:47,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:39:47,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280922184] [2022-07-22 16:39:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:47,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:47,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:39:47,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:39:47,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 16:39:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:39:47,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 16:39:47,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:39:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:39:47,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:39:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:39:47,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:39:47,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307800923] [2022-07-22 16:39:47,713 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:39:47,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280922184] [2022-07-22 16:39:47,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280922184] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:39:47,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:39:47,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-07-22 16:39:47,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929822753] [2022-07-22 16:39:47,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:39:47,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 16:39:47,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:39:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 16:39:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:39:47,716 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 16:39:47,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:39:47,802 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-07-22 16:39:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 16:39:47,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2022-07-22 16:39:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:39:47,805 INFO L225 Difference]: With dead ends: 35 [2022-07-22 16:39:47,805 INFO L226 Difference]: Without dead ends: 30 [2022-07-22 16:39:47,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:39:47,806 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:39:47,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 84 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:39:47,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-22 16:39:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-07-22 16:39:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 16:39:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-07-22 16:39:47,812 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 25 [2022-07-22 16:39:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:39:47,813 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-07-22 16:39:47,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 16:39:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-07-22 16:39:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 16:39:47,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:39:47,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:39:47,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 16:39:48,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:48,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:39:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:39:48,036 INFO L85 PathProgramCache]: Analyzing trace with hash -126969667, now seen corresponding path program 1 times [2022-07-22 16:39:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:39:48,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404854555] [2022-07-22 16:39:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:48,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:39:48,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:39:48,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212549001] [2022-07-22 16:39:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:48,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:48,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:39:48,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:39:48,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 16:39:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:39:48,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:39:48,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:39:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:39:48,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:39:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:39:48,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:39:48,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404854555] [2022-07-22 16:39:48,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:39:48,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212549001] [2022-07-22 16:39:48,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212549001] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:39:48,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:39:48,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-07-22 16:39:48,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432946758] [2022-07-22 16:39:48,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:39:48,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:39:48,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:39:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:39:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-22 16:39:48,185 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-22 16:39:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:39:48,249 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-07-22 16:39:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:39:48,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2022-07-22 16:39:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:39:48,251 INFO L225 Difference]: With dead ends: 57 [2022-07-22 16:39:48,251 INFO L226 Difference]: Without dead ends: 52 [2022-07-22 16:39:48,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:39:48,253 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:39:48,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 93 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:39:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-22 16:39:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-07-22 16:39:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 16:39:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-07-22 16:39:48,263 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 28 [2022-07-22 16:39:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:39:48,263 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-07-22 16:39:48,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-22 16:39:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-07-22 16:39:48,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 16:39:48,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:39:48,265 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:39:48,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 16:39:48,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:48,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:39:48,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:39:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash 972990450, now seen corresponding path program 2 times [2022-07-22 16:39:48,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:39:48,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506306481] [2022-07-22 16:39:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:48,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:39:48,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:39:48,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660840316] [2022-07-22 16:39:48,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 16:39:48,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:48,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:39:48,510 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:39:48,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 16:39:48,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 16:39:48,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 16:39:48,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 16:39:48,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:39:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:39:48,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:39:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 16:39:48,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:39:48,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506306481] [2022-07-22 16:39:48,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:39:48,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660840316] [2022-07-22 16:39:48,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660840316] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:39:48,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:39:48,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-07-22 16:39:48,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37779157] [2022-07-22 16:39:48,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:39:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 16:39:48,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:39:48,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 16:39:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:39:48,825 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-07-22 16:39:49,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:39:49,022 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2022-07-22 16:39:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 16:39:49,024 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 55 [2022-07-22 16:39:49,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:39:49,026 INFO L225 Difference]: With dead ends: 111 [2022-07-22 16:39:49,026 INFO L226 Difference]: Without dead ends: 106 [2022-07-22 16:39:49,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-07-22 16:39:49,027 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 68 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:39:49,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 175 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:39:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-22 16:39:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-07-22 16:39:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-22 16:39:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2022-07-22 16:39:49,047 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 55 [2022-07-22 16:39:49,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:39:49,047 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2022-07-22 16:39:49,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-07-22 16:39:49,048 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2022-07-22 16:39:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 16:39:49,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:39:49,050 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:39:49,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 16:39:49,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:49,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:39:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:39:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1909967598, now seen corresponding path program 3 times [2022-07-22 16:39:49,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:39:49,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157035420] [2022-07-22 16:39:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:39:49,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:39:49,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:39:49,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070472141] [2022-07-22 16:39:49,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 16:39:49,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:49,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:39:49,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:39:49,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 16:39:49,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-22 16:39:49,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-07-22 16:39:49,368 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 16:39:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 16:39:49,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 16:39:49,444 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 16:39:49,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 16:39:49,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 16:39:49,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:39:49,662 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-07-22 16:39:49,664 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 16:39:49,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 04:39:49 BoogieIcfgContainer [2022-07-22 16:39:49,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 16:39:49,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 16:39:49,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 16:39:49,726 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 16:39:49,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:39:45" (3/4) ... [2022-07-22 16:39:49,728 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 16:39:49,800 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 16:39:49,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 16:39:49,801 INFO L158 Benchmark]: Toolchain (without parser) took 4557.09ms. Allocated memory was 79.7MB in the beginning and 132.1MB in the end (delta: 52.4MB). Free memory was 45.8MB in the beginning and 82.9MB in the end (delta: -37.1MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-07-22 16:39:49,801 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 16:39:49,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.33ms. Allocated memory was 79.7MB in the beginning and 109.1MB in the end (delta: 29.4MB). Free memory was 45.5MB in the beginning and 84.2MB in the end (delta: -38.7MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2022-07-22 16:39:49,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.72ms. Allocated memory is still 109.1MB. Free memory was 84.2MB in the beginning and 82.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:39:49,802 INFO L158 Benchmark]: Boogie Preprocessor took 28.90ms. Allocated memory is still 109.1MB. Free memory was 82.7MB in the beginning and 81.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:39:49,802 INFO L158 Benchmark]: RCFGBuilder took 291.66ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 72.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 16:39:49,803 INFO L158 Benchmark]: TraceAbstraction took 3901.99ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 71.6MB in the beginning and 88.1MB in the end (delta: -16.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-07-22 16:39:49,803 INFO L158 Benchmark]: Witness Printer took 74.73ms. Allocated memory is still 132.1MB. Free memory was 88.1MB in the beginning and 82.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 16:39:49,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.33ms. Allocated memory was 79.7MB in the beginning and 109.1MB in the end (delta: 29.4MB). Free memory was 45.5MB in the beginning and 84.2MB in the end (delta: -38.7MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.72ms. Allocated memory is still 109.1MB. Free memory was 84.2MB in the beginning and 82.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.90ms. Allocated memory is still 109.1MB. Free memory was 82.7MB in the beginning and 81.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.66ms. Allocated memory is still 109.1MB. Free memory was 81.7MB in the beginning and 72.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3901.99ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 71.6MB in the beginning and 88.1MB in the end (delta: -16.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Witness Printer took 74.73ms. Allocated memory is still 132.1MB. Free memory was 88.1MB in the beginning and 82.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [counter=0, x1=11, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [counter=0, x1=11, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] EXPR counter++ VAL [counter=1, counter++=0, x1=11, x2=1, y1=0, y2=0, y3=11] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1, x1=11, x2=1, y1=0, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] EXPR counter++ VAL [counter=2, counter++=1, x1=11, x2=1, y1=1, y2=0, y3=10] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2, x1=11, x2=1, y1=1, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] EXPR counter++ VAL [counter=3, counter++=2, x1=11, x2=1, y1=2, y2=0, y3=9] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3, x1=11, x2=1, y1=2, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] EXPR counter++ VAL [counter=4, counter++=3, x1=11, x2=1, y1=3, y2=0, y3=8] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4, x1=11, x2=1, y1=3, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] EXPR counter++ VAL [counter=5, counter++=4, x1=11, x2=1, y1=4, y2=0, y3=7] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5, x1=11, x2=1, y1=4, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] EXPR counter++ VAL [counter=6, counter++=5, x1=11, x2=1, y1=5, y2=0, y3=6] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=6, x1=11, x2=1, y1=5, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] EXPR counter++ VAL [counter=7, counter++=6, x1=11, x2=1, y1=6, y2=0, y3=5] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=7, x1=11, x2=1, y1=6, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] EXPR counter++ VAL [counter=8, counter++=7, x1=11, x2=1, y1=7, y2=0, y3=4] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=8, x1=11, x2=1, y1=7, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] EXPR counter++ VAL [counter=9, counter++=8, x1=11, x2=1, y1=8, y2=0, y3=3] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=9, x1=11, x2=1, y1=8, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] EXPR counter++ VAL [counter=10, counter++=9, x1=11, x2=1, y1=9, y2=0, y3=2] [L36] COND TRUE counter++<10 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=10, x1=11, x2=1, y1=9, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] EXPR counter++ VAL [counter=11, counter++=10, x1=11, x2=1, y1=10, y2=0, y3=1] [L36] COND FALSE !(counter++<10) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, counter=11] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 510 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 369 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 141 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 271 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=6, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 673 SizeOfPredicates, 15 NumberOfNonLiveVariables, 471 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 82/188 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-22 16:39:49,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE