./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/array-examples/data_structures_set_multi_proc_trivial_ground.i -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 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 09:25:30,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 09:25:30,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 09:25:30,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 09:25:30,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 09:25:30,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 09:25:30,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 09:25:30,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 09:25:30,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 09:25:30,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 09:25:30,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 09:25:30,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 09:25:30,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 09:25:30,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 09:25:30,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 09:25:30,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 09:25:30,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 09:25:30,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 09:25:30,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 09:25:30,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 09:25:30,129 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 09:25:30,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 09:25:30,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 09:25:30,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 09:25:30,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 09:25:30,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 09:25:30,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 09:25:30,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 09:25:30,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 09:25:30,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 09:25:30,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 09:25:30,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 09:25:30,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 09:25:30,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 09:25:30,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 09:25:30,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 09:25:30,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 09:25:30,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 09:25:30,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 09:25:30,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 09:25:30,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 09:25:30,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 09:25:30,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 09:25:30,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 09:25:30,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 09:25:30,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 09:25:30,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 09:25:30,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 09:25:30,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 09:25:30,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 09:25:30,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 09:25:30,180 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 09:25:30,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 09:25:30,181 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 09:25:30,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 09:25:30,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 09:25:30,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 09:25:30,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 09:25:30,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 09:25:30,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 09:25:30,182 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 09:25:30,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 09:25:30,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 09:25:30,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 09:25:30,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 09:25:30,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 09:25:30,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 09:25:30,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 09:25:30,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 09:25:30,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 09:25:30,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 09:25:30,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 09:25:30,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 09:25:30,184 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 09:25:30,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 09:25:30,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 09:25:30,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2022-07-13 09:25:30,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 09:25:30,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 09:25:30,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 09:25:30,377 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 09:25:30,377 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 09:25:30,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-07-13 09:25:30,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e675e7237/0392a8ca6e2d42a984eed373fcd7d0c0/FLAG8a26dea0f [2022-07-13 09:25:30,825 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 09:25:30,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-07-13 09:25:30,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e675e7237/0392a8ca6e2d42a984eed373fcd7d0c0/FLAG8a26dea0f [2022-07-13 09:25:30,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e675e7237/0392a8ca6e2d42a984eed373fcd7d0c0 [2022-07-13 09:25:30,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 09:25:30,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 09:25:30,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 09:25:30,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 09:25:30,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 09:25:30,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:25:30" (1/1) ... [2022-07-13 09:25:30,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79152137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:30, skipping insertion in model container [2022-07-13 09:25:30,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:25:30" (1/1) ... [2022-07-13 09:25:30,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 09:25:30,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 09:25:30,960 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-07-13 09:25:30,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 09:25:31,002 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 09:25:31,011 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-07-13 09:25:31,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 09:25:31,043 INFO L208 MainTranslator]: Completed translation [2022-07-13 09:25:31,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31 WrapperNode [2022-07-13 09:25:31,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 09:25:31,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 09:25:31,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 09:25:31,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 09:25:31,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,085 INFO L137 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 158 [2022-07-13 09:25:31,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 09:25:31,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 09:25:31,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 09:25:31,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 09:25:31,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 09:25:31,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 09:25:31,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 09:25:31,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 09:25:31,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (1/1) ... [2022-07-13 09:25:31,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 09:25:31,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 09:25:31,151 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) [2022-07-13 09:25:31,152 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 [2022-07-13 09:25:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 09:25:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 09:25:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 09:25:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 09:25:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 09:25:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 09:25:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 09:25:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 09:25:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 09:25:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 09:25:31,221 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 09:25:31,223 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 09:25:31,376 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 09:25:31,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 09:25:31,381 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-13 09:25:31,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:31 BoogieIcfgContainer [2022-07-13 09:25:31,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 09:25:31,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 09:25:31,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 09:25:31,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 09:25:31,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:25:30" (1/3) ... [2022-07-13 09:25:31,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652e71ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:25:31, skipping insertion in model container [2022-07-13 09:25:31,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:25:31" (2/3) ... [2022-07-13 09:25:31,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652e71ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:25:31, skipping insertion in model container [2022-07-13 09:25:31,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:31" (3/3) ... [2022-07-13 09:25:31,392 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2022-07-13 09:25:31,403 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 09:25:31,403 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 09:25:31,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 09:25:31,463 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@62a7c1ce, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a5d6b13 [2022-07-13 09:25:31,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 09:25:31,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 09:25:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 09:25:31,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:31,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:31,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1977750346, now seen corresponding path program 1 times [2022-07-13 09:25:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:31,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667612954] [2022-07-13 09:25:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:31,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:25:31,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:31,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667612954] [2022-07-13 09:25:31,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667612954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:25:31,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:25:31,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 09:25:31,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085776954] [2022-07-13 09:25:31,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:25:31,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 09:25:31,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:31,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 09:25:31,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 09:25:31,785 INFO L87 Difference]: Start difference. First operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:31,928 INFO L93 Difference]: Finished difference Result 131 states and 207 transitions. [2022-07-13 09:25:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 09:25:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 09:25:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:31,944 INFO L225 Difference]: With dead ends: 131 [2022-07-13 09:25:31,948 INFO L226 Difference]: Without dead ends: 79 [2022-07-13 09:25:31,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 09:25:31,957 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:31,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 92 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 09:25:31,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-13 09:25:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 45. [2022-07-13 09:25:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 09:25:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2022-07-13 09:25:32,021 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 10 [2022-07-13 09:25:32,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:32,022 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2022-07-13 09:25:32,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2022-07-13 09:25:32,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 09:25:32,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:32,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:32,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 09:25:32,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:32,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:32,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1322552780, now seen corresponding path program 1 times [2022-07-13 09:25:32,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:32,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357853386] [2022-07-13 09:25:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:32,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:25:32,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:32,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357853386] [2022-07-13 09:25:32,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357853386] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 09:25:32,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272005265] [2022-07-13 09:25:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:32,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 09:25:32,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 09:25:32,141 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) [2022-07-13 09:25:32,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 09:25:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:32,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 09:25:32,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 09:25:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:25:32,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 09:25:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:25:32,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272005265] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 09:25:32,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 09:25:32,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-13 09:25:32,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612784168] [2022-07-13 09:25:32,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 09:25:32,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 09:25:32,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:32,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 09:25:32,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 09:25:32,344 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:32,498 INFO L93 Difference]: Finished difference Result 223 states and 303 transitions. [2022-07-13 09:25:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 09:25:32,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-13 09:25:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:32,500 INFO L225 Difference]: With dead ends: 223 [2022-07-13 09:25:32,500 INFO L226 Difference]: Without dead ends: 183 [2022-07-13 09:25:32,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 09:25:32,502 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 144 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:32,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 263 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 09:25:32,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-13 09:25:32,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 51. [2022-07-13 09:25:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 09:25:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-07-13 09:25:32,510 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 12 [2022-07-13 09:25:32,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:32,511 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-07-13 09:25:32,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-07-13 09:25:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 09:25:32,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:32,512 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:32,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 09:25:32,731 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 [2022-07-13 09:25:32,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash -201790894, now seen corresponding path program 2 times [2022-07-13 09:25:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:32,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287365763] [2022-07-13 09:25:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 09:25:32,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:32,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287365763] [2022-07-13 09:25:32,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287365763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:25:32,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:25:32,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 09:25:32,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259002745] [2022-07-13 09:25:32,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:25:32,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 09:25:32,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 09:25:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 09:25:32,782 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:32,814 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2022-07-13 09:25:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 09:25:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 09:25:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:32,821 INFO L225 Difference]: With dead ends: 98 [2022-07-13 09:25:32,821 INFO L226 Difference]: Without dead ends: 57 [2022-07-13 09:25:32,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 09:25:32,822 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:32,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 95 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 09:25:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-13 09:25:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-07-13 09:25:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.25) internal successors, (65), 52 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 09:25:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-07-13 09:25:32,837 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 18 [2022-07-13 09:25:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:32,837 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-07-13 09:25:32,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-07-13 09:25:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 09:25:32,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:32,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:32,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 09:25:32,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:32,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash 8512802, now seen corresponding path program 1 times [2022-07-13 09:25:32,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:32,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418809186] [2022-07-13 09:25:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 09:25:32,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418809186] [2022-07-13 09:25:32,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418809186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:25:32,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:25:32,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 09:25:32,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680041462] [2022-07-13 09:25:32,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:25:32,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 09:25:32,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:32,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 09:25:32,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 09:25:32,915 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:32,930 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2022-07-13 09:25:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 09:25:32,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-07-13 09:25:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:32,931 INFO L225 Difference]: With dead ends: 117 [2022-07-13 09:25:32,931 INFO L226 Difference]: Without dead ends: 77 [2022-07-13 09:25:32,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 09:25:32,933 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 20 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:32,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 09:25:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-13 09:25:32,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2022-07-13 09:25:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 09:25:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2022-07-13 09:25:32,938 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 29 [2022-07-13 09:25:32,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:32,938 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2022-07-13 09:25:32,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2022-07-13 09:25:32,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 09:25:32,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:32,939 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:32,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 09:25:32,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:32,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:32,940 INFO L85 PathProgramCache]: Analyzing trace with hash 383662240, now seen corresponding path program 1 times [2022-07-13 09:25:32,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:32,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938746286] [2022-07-13 09:25:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:32,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 09:25:32,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:32,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938746286] [2022-07-13 09:25:32,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938746286] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 09:25:32,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565727848] [2022-07-13 09:25:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:32,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 09:25:32,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 09:25:32,993 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) [2022-07-13 09:25:32,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 09:25:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:33,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 09:25:33,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 09:25:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 09:25:33,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 09:25:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 09:25:33,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565727848] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 09:25:33,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 09:25:33,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-07-13 09:25:33,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801322314] [2022-07-13 09:25:33,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 09:25:33,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 09:25:33,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 09:25:33,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-13 09:25:33,142 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:33,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:33,636 INFO L93 Difference]: Finished difference Result 623 states and 861 transitions. [2022-07-13 09:25:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 09:25:33,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-07-13 09:25:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:33,639 INFO L225 Difference]: With dead ends: 623 [2022-07-13 09:25:33,639 INFO L226 Difference]: Without dead ends: 577 [2022-07-13 09:25:33,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 09:25:33,640 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 1127 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:33,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 428 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 09:25:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-13 09:25:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 88. [2022-07-13 09:25:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.216867469879518) internal successors, (101), 83 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 09:25:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2022-07-13 09:25:33,656 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 31 [2022-07-13 09:25:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:33,656 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2022-07-13 09:25:33,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2022-07-13 09:25:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 09:25:33,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:33,657 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:33,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 09:25:33,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 09:25:33,874 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:33,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1437829230, now seen corresponding path program 2 times [2022-07-13 09:25:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:33,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044757059] [2022-07-13 09:25:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-13 09:25:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:33,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044757059] [2022-07-13 09:25:33,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044757059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:25:33,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:25:33,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 09:25:33,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327430319] [2022-07-13 09:25:33,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:25:33,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 09:25:33,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:33,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 09:25:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 09:25:33,928 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:33,942 INFO L93 Difference]: Finished difference Result 153 states and 192 transitions. [2022-07-13 09:25:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 09:25:33,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-07-13 09:25:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:33,943 INFO L225 Difference]: With dead ends: 153 [2022-07-13 09:25:33,944 INFO L226 Difference]: Without dead ends: 114 [2022-07-13 09:25:33,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 09:25:33,945 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:33,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 177 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 09:25:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-07-13 09:25:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91. [2022-07-13 09:25:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 86 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 09:25:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2022-07-13 09:25:33,952 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 45 [2022-07-13 09:25:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:33,952 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2022-07-13 09:25:33,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2022-07-13 09:25:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 09:25:33,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:25:33,953 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:25:33,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 09:25:33,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:25:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:25:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash 311045192, now seen corresponding path program 1 times [2022-07-13 09:25:33,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:25:33,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651411908] [2022-07-13 09:25:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:25:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:25:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:25:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-13 09:25:34,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:25:34,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651411908] [2022-07-13 09:25:34,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651411908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:25:34,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:25:34,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 09:25:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758409140] [2022-07-13 09:25:34,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:25:34,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 09:25:34,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:25:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 09:25:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 09:25:34,003 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:25:34,013 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2022-07-13 09:25:34,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 09:25:34,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-07-13 09:25:34,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:25:34,014 INFO L225 Difference]: With dead ends: 100 [2022-07-13 09:25:34,014 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 09:25:34,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 09:25:34,015 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 09:25:34,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 09:25:34,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 09:25:34,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 09:25:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 09:25:34,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2022-07-13 09:25:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:25:34,016 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 09:25:34,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:25:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 09:25:34,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 09:25:34,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 09:25:34,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 09:25:34,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 09:25:34,163 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 54) no Hoare annotation was computed. [2022-07-13 09:25:34,163 INFO L899 garLoopResultBuilder]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2022-07-13 09:25:34,163 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 09:25:34,163 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 09:25:34,163 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2022-07-13 09:25:34,164 INFO L895 garLoopResultBuilder]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-07-13 09:25:34,164 INFO L899 garLoopResultBuilder]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2022-07-13 09:25:34,164 INFO L899 garLoopResultBuilder]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2022-07-13 09:25:34,164 INFO L895 garLoopResultBuilder]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2022-07-13 09:25:34,164 INFO L895 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: false [2022-07-13 09:25:34,164 INFO L899 garLoopResultBuilder]: For program point L63-1(line 63) no Hoare annotation was computed. [2022-07-13 09:25:34,164 INFO L899 garLoopResultBuilder]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2022-07-13 09:25:34,164 INFO L899 garLoopResultBuilder]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2022-07-13 09:25:34,165 INFO L895 garLoopResultBuilder]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-07-13 09:25:34,165 INFO L895 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-07-13 09:25:34,165 INFO L899 garLoopResultBuilder]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2022-07-13 09:25:34,165 INFO L899 garLoopResultBuilder]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2022-07-13 09:25:34,165 INFO L895 garLoopResultBuilder]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-07-13 09:25:34,165 INFO L899 garLoopResultBuilder]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2022-07-13 09:25:34,165 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2022-07-13 09:25:34,166 INFO L895 garLoopResultBuilder]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-07-13 09:25:34,166 INFO L899 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2022-07-13 09:25:34,166 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-07-13 09:25:34,166 INFO L899 garLoopResultBuilder]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2022-07-13 09:25:34,166 INFO L895 garLoopResultBuilder]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2022-07-13 09:25:34,166 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-07-13 09:25:34,166 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2022-07-13 09:25:34,167 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 09:25:34,167 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: false [2022-07-13 09:25:34,167 INFO L899 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed. [2022-07-13 09:25:34,167 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false [2022-07-13 09:25:34,167 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2022-07-13 09:25:34,167 INFO L902 garLoopResultBuilder]: At program point L66(lines 27 67) the Hoare annotation is: true [2022-07-13 09:25:34,167 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 09:25:34,167 INFO L899 garLoopResultBuilder]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2022-07-13 09:25:34,168 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 36) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| 0) [2022-07-13 09:25:34,168 INFO L899 garLoopResultBuilder]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2022-07-13 09:25:34,168 INFO L895 garLoopResultBuilder]: At program point L25(lines 20 26) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= 0 |ULTIMATE.start_elem_exists_#res#1|) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2022-07-13 09:25:34,168 INFO L895 garLoopResultBuilder]: At program point L18(lines 16 19) the Hoare annotation is: false [2022-07-13 09:25:34,168 INFO L899 garLoopResultBuilder]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2022-07-13 09:25:34,168 INFO L895 garLoopResultBuilder]: At program point L51-3(lines 51 60) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~n~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| 0))) (or (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) .cse0 .cse1) (and .cse0 (= |ULTIMATE.start_main_~v~0#1| 0) .cse1))) [2022-07-13 09:25:34,169 INFO L899 garLoopResultBuilder]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2022-07-13 09:25:34,169 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true [2022-07-13 09:25:34,169 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-07-13 09:25:34,169 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-07-13 09:25:34,169 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-07-13 09:25:34,169 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2022-07-13 09:25:34,169 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-07-13 09:25:34,172 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-07-13 09:25:34,173 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 09:25:34,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:25:34 BoogieIcfgContainer [2022-07-13 09:25:34,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 09:25:34,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 09:25:34,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 09:25:34,184 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 09:25:34,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:25:31" (3/4) ... [2022-07-13 09:25:34,186 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 09:25:34,190 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-13 09:25:34,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-07-13 09:25:34,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-13 09:25:34,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 09:25:34,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 09:25:34,208 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((size == 0 && i == 0) && 0 == \result) && n == 0) && x == 0 [2022-07-13 09:25:34,217 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 09:25:34,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 09:25:34,217 INFO L158 Benchmark]: Toolchain (without parser) took 3378.90ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 68.7MB in the beginning and 84.5MB in the end (delta: -15.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-07-13 09:25:34,218 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 09:25:34,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.53ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 74.6MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 09:25:34,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.13ms. Allocated memory is still 98.6MB. Free memory was 74.6MB in the beginning and 72.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 09:25:34,218 INFO L158 Benchmark]: Boogie Preprocessor took 38.89ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 71.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 09:25:34,219 INFO L158 Benchmark]: RCFGBuilder took 256.18ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 58.3MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-13 09:25:34,219 INFO L158 Benchmark]: TraceAbstraction took 2799.92ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 57.5MB in the beginning and 87.7MB in the end (delta: -30.1MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2022-07-13 09:25:34,219 INFO L158 Benchmark]: Witness Printer took 33.56ms. Allocated memory is still 121.6MB. Free memory was 87.7MB in the beginning and 84.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 09:25:34,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.53ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 74.6MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.13ms. Allocated memory is still 98.6MB. Free memory was 74.6MB in the beginning and 72.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.89ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 71.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 256.18ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 58.3MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2799.92ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 57.5MB in the beginning and 87.7MB in the end (delta: -30.1MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. * Witness Printer took 33.56ms. Allocated memory is still 121.6MB. Free memory was 87.7MB in the beginning and 84.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1425 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1385 mSDsluCounter, 1167 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 799 mSDsCounter, 355 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 355 mSolverCounterUnsat, 368 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=6, InterpolantAutomatonStates: 58, 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, 7 MinimizatonAttempts, 699 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 35 PreInvPairs, 58 NumberOfFragments, 99 HoareAnnotationTreeSize, 35 FomulaSimplifications, 92 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 438 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 258/294 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((size == 0 && i == 0) && n == 0) && x == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((size == 0 && i == 0) && n == 0) && x == 0) || ((n == 0 && v == 0) && x == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((size == 0 && i == 0) && 0 == \result) && n == 0) && x == 0 - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((size == 0 && i == 0) && n == 0) && x == 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: n == 0 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-07-13 09:25:34,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE