./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/rule60_list2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/ldv-regression/rule60_list2.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 ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:36:56,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:36:56,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:36:57,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:36:57,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:36:57,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:36:57,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:36:57,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:36:57,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:36:57,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:36:57,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:36:57,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:36:57,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:36:57,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:36:57,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:36:57,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:36:57,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:36:57,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:36:57,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:36:57,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:36:57,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:36:57,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:36:57,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:36:57,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:36:57,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:36:57,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:36:57,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:36:57,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:36:57,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:36:57,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:36:57,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:36:57,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:36:57,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:36:57,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:36:57,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:36:57,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:36:57,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:36:57,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:36:57,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:36:57,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:36:57,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:36:57,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:36:57,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:36:57,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:36:57,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:36:57,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:36:57,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:36:57,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:36:57,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:36:57,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:36:57,085 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:36:57,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:36:57,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:36:57,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:36:57,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:36:57,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:36:57,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:36:57,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:36:57,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:36:57,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:36:57,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:36:57,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:36:57,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:36:57,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:36:57,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:36:57,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:36:57,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:36:57,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:36:57,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:36:57,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:36:57,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:36:57,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:36:57,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:36:57,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:36:57,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:36:57,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:36:57,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 [2021-12-14 13:36:57,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:36:57,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:36:57,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:36:57,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:36:57,282 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:36:57,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/rule60_list2.i [2021-12-14 13:36:57,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed7991d2/a50bf2da91a04ba787f477309ef6cb7b/FLAGe55b35646 [2021-12-14 13:36:57,720 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:36:57,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list2.i [2021-12-14 13:36:57,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed7991d2/a50bf2da91a04ba787f477309ef6cb7b/FLAGe55b35646 [2021-12-14 13:36:57,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed7991d2/a50bf2da91a04ba787f477309ef6cb7b [2021-12-14 13:36:57,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:36:57,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:36:57,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:36:57,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:36:57,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:36:57,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:36:57" (1/1) ... [2021-12-14 13:36:57,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@298e8fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:57, skipping insertion in model container [2021-12-14 13:36:57,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:36:57" (1/1) ... [2021-12-14 13:36:57,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:36:57,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:36:57,883 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/ldv-regression/rule60_list2.i[292,305] [2021-12-14 13:36:57,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:36:57,999 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:36:58,008 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/ldv-regression/rule60_list2.i[292,305] [2021-12-14 13:36:58,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:36:58,061 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:36:58,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58 WrapperNode [2021-12-14 13:36:58,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:36:58,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:36:58,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:36:58,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:36:58,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,102 INFO L137 Inliner]: procedures = 126, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2021-12-14 13:36:58,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:36:58,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:36:58,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:36:58,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:36:58,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:36:58,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:36:58,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:36:58,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:36:58,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (1/1) ... [2021-12-14 13:36:58,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:36:58,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:36:58,174 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) [2021-12-14 13:36:58,195 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 [2021-12-14 13:36:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-12-14 13:36:58,204 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-12-14 13:36:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:36:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-14 13:36:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-14 13:36:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 13:36:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-12-14 13:36:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-12-14 13:36:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:36:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:36:58,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:36:58,286 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:36:58,287 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:36:58,385 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:36:58,389 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:36:58,390 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 13:36:58,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:36:58 BoogieIcfgContainer [2021-12-14 13:36:58,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:36:58,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:36:58,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:36:58,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:36:58,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:36:57" (1/3) ... [2021-12-14 13:36:58,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c3d54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:36:58, skipping insertion in model container [2021-12-14 13:36:58,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:58" (2/3) ... [2021-12-14 13:36:58,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c3d54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:36:58, skipping insertion in model container [2021-12-14 13:36:58,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:36:58" (3/3) ... [2021-12-14 13:36:58,398 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2021-12-14 13:36:58,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:36:58,402 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:36:58,448 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:36:58,455 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 13:36:58,456 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:36:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-14 13:36:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-14 13:36:58,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:36:58,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:36:58,478 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:36:58,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:36:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash 483918471, now seen corresponding path program 1 times [2021-12-14 13:36:58,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:36:58,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116654835] [2021-12-14 13:36:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:36:58,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:36:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:36:58,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:36:58,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116654835] [2021-12-14 13:36:58,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116654835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:36:58,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:36:58,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 13:36:58,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236315633] [2021-12-14 13:36:58,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:36:58,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 13:36:58,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:36:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 13:36:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:36:58,680 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:36:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:36:58,722 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2021-12-14 13:36:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 13:36:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-14 13:36:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:36:58,728 INFO L225 Difference]: With dead ends: 66 [2021-12-14 13:36:58,728 INFO L226 Difference]: Without dead ends: 29 [2021-12-14 13:36:58,730 INFO L932 BasicCegarLoop]: 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 [2021-12-14 13:36:58,732 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:36:58,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 93 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:36:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-14 13:36:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-14 13:36:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:36:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-12-14 13:36:58,755 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2021-12-14 13:36:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:36:58,755 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-12-14 13:36:58,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:36:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-12-14 13:36:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 13:36:58,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:36:58,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:36:58,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:36:58,757 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:36:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:36:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1376776956, now seen corresponding path program 1 times [2021-12-14 13:36:58,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:36:58,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313693460] [2021-12-14 13:36:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:36:58,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:36:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:36:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:58,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 13:36:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 13:36:58,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:36:58,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313693460] [2021-12-14 13:36:58,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313693460] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:36:58,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480290288] [2021-12-14 13:36:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:36:58,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:36:58,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:36:58,949 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) [2021-12-14 13:36:58,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 13:36:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:59,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-14 13:36:59,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:36:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 13:36:59,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:36:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 13:36:59,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480290288] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:36:59,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:36:59,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2021-12-14 13:36:59,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242440927] [2021-12-14 13:36:59,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:36:59,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:36:59,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:36:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:36:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:36:59,301 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 13:36:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:36:59,375 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2021-12-14 13:36:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 13:36:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-12-14 13:36:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:36:59,378 INFO L225 Difference]: With dead ends: 51 [2021-12-14 13:36:59,378 INFO L226 Difference]: Without dead ends: 32 [2021-12-14 13:36:59,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 13:36:59,381 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 12 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:36:59,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 133 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:36:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-14 13:36:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-14 13:36:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-14 13:36:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-12-14 13:36:59,389 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 26 [2021-12-14 13:36:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:36:59,389 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-12-14 13:36:59,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 13:36:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-12-14 13:36:59,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 13:36:59,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:36:59,390 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:36:59,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 13:36:59,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:36:59,596 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:36:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:36:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2100541890, now seen corresponding path program 1 times [2021-12-14 13:36:59,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:36:59,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35701361] [2021-12-14 13:36:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:36:59,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:36:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:36:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 13:36:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 13:36:59,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:36:59,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35701361] [2021-12-14 13:36:59,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35701361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:36:59,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:36:59,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 13:36:59,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489413477] [2021-12-14 13:36:59,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:36:59,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:36:59,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:36:59,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:36:59,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:36:59,744 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 13:36:59,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:36:59,801 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-12-14 13:36:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 13:36:59,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-12-14 13:36:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:36:59,803 INFO L225 Difference]: With dead ends: 49 [2021-12-14 13:36:59,803 INFO L226 Difference]: Without dead ends: 29 [2021-12-14 13:36:59,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 13:36:59,804 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:36:59,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:36:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-14 13:36:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-14 13:36:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:36:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-12-14 13:36:59,808 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 26 [2021-12-14 13:36:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:36:59,809 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-12-14 13:36:59,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 13:36:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-12-14 13:36:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 13:36:59,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:36:59,810 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:36:59,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 13:36:59,810 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:36:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:36:59,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1493360828, now seen corresponding path program 1 times [2021-12-14 13:36:59,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:36:59,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091772204] [2021-12-14 13:36:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:36:59,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:36:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:36:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 13:36:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:36:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 13:36:59,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:36:59,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091772204] [2021-12-14 13:36:59,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091772204] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:36:59,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329545737] [2021-12-14 13:36:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:36:59,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:36:59,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:36:59,976 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) [2021-12-14 13:36:59,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 13:37:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:00,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-14 13:37:00,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:37:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 13:37:00,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:37:00,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329545737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:37:00,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 13:37:00,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 22 [2021-12-14 13:37:00,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132453490] [2021-12-14 13:37:00,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:37:00,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 13:37:00,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:37:00,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 13:37:00,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-12-14 13:37:00,299 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 13:37:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:37:00,520 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2021-12-14 13:37:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 13:37:00,520 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-12-14 13:37:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:37:00,522 INFO L225 Difference]: With dead ends: 55 [2021-12-14 13:37:00,522 INFO L226 Difference]: Without dead ends: 46 [2021-12-14 13:37:00,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2021-12-14 13:37:00,523 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 55 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 13:37:00,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 119 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 13:37:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-14 13:37:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-12-14 13:37:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-14 13:37:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2021-12-14 13:37:00,529 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 26 [2021-12-14 13:37:00,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:37:00,530 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2021-12-14 13:37:00,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 13:37:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2021-12-14 13:37:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 13:37:00,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:37:00,531 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:37:00,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 13:37:00,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-14 13:37:00,750 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:37:00,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:37:00,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1025994815, now seen corresponding path program 1 times [2021-12-14 13:37:00,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:37:00,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690886068] [2021-12-14 13:37:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:37:00,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:37:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:37:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 13:37:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 13:37:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 13:37:00,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:37:00,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690886068] [2021-12-14 13:37:00,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690886068] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:37:00,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034595270] [2021-12-14 13:37:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:37:00,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:37:00,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:37:00,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:37:00,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 13:37:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:00,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-14 13:37:00,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:37:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:37:01,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:37:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:37:01,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034595270] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:37:01,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:37:01,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 25 [2021-12-14 13:37:01,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867897365] [2021-12-14 13:37:01,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:37:01,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-14 13:37:01,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:37:01,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-14 13:37:01,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-12-14 13:37:01,304 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 13:37:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:37:01,706 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2021-12-14 13:37:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 13:37:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33 [2021-12-14 13:37:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:37:01,707 INFO L225 Difference]: With dead ends: 55 [2021-12-14 13:37:01,707 INFO L226 Difference]: Without dead ends: 48 [2021-12-14 13:37:01,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2021-12-14 13:37:01,708 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 63 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 13:37:01,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 113 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 13:37:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-14 13:37:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-12-14 13:37:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-14 13:37:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-12-14 13:37:01,713 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 33 [2021-12-14 13:37:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:37:01,713 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-12-14 13:37:01,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 13:37:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-12-14 13:37:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 13:37:01,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:37:01,714 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:37:01,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 13:37:01,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:37:01,933 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:37:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:37:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash 216648189, now seen corresponding path program 1 times [2021-12-14 13:37:01,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:37:01,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194888038] [2021-12-14 13:37:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:37:01,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:37:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:02,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:37:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 13:37:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 13:37:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 13:37:02,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:37:02,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194888038] [2021-12-14 13:37:02,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194888038] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:37:02,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627710433] [2021-12-14 13:37:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:37:02,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:37:02,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:37:02,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:37:02,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 13:37:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:02,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-14 13:37:02,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:37:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:37:02,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:37:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:37:02,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627710433] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:37:02,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:37:02,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2021-12-14 13:37:02,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561401162] [2021-12-14 13:37:02,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:37:02,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-14 13:37:02,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:37:02,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-14 13:37:02,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2021-12-14 13:37:02,682 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 26 states have internal predecessors, (63), 7 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-14 13:37:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:37:03,107 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-12-14 13:37:03,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 13:37:03,108 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 26 states have internal predecessors, (63), 7 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 33 [2021-12-14 13:37:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:37:03,110 INFO L225 Difference]: With dead ends: 57 [2021-12-14 13:37:03,110 INFO L226 Difference]: Without dead ends: 54 [2021-12-14 13:37:03,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=1695, Unknown=0, NotChecked=0, Total=1980 [2021-12-14 13:37:03,115 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 119 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 13:37:03,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 94 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 13:37:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-14 13:37:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2021-12-14 13:37:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-14 13:37:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2021-12-14 13:37:03,120 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 33 [2021-12-14 13:37:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:37:03,120 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2021-12-14 13:37:03,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 26 states have internal predecessors, (63), 7 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-14 13:37:03,121 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-12-14 13:37:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-14 13:37:03,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:37:03,122 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:37:03,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 13:37:03,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:37:03,335 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:37:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:37:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1230299368, now seen corresponding path program 1 times [2021-12-14 13:37:03,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:37:03,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930620523] [2021-12-14 13:37:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:37:03,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:37:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:37:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 13:37:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 13:37:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 13:37:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 13:37:03,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:37:03,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930620523] [2021-12-14 13:37:03,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930620523] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:37:03,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855710031] [2021-12-14 13:37:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:37:03,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:37:03,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:37:03,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:37:03,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 13:37:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:03,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-14 13:37:03,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:37:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 13:37:03,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:37:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 13:37:03,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855710031] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:37:03,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:37:03,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 30 [2021-12-14 13:37:03,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554353991] [2021-12-14 13:37:03,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:37:03,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-14 13:37:03,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:37:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-14 13:37:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2021-12-14 13:37:03,993 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 30 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 23 states have internal predecessors, (56), 7 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-14 13:37:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:37:04,568 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2021-12-14 13:37:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 13:37:04,568 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 23 states have internal predecessors, (56), 7 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 43 [2021-12-14 13:37:04,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:37:04,569 INFO L225 Difference]: With dead ends: 61 [2021-12-14 13:37:04,569 INFO L226 Difference]: Without dead ends: 37 [2021-12-14 13:37:04,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=256, Invalid=2096, Unknown=0, NotChecked=0, Total=2352 [2021-12-14 13:37:04,570 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 99 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 13:37:04,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 169 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 13:37:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-14 13:37:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-14 13:37:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 13:37:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-12-14 13:37:04,573 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 43 [2021-12-14 13:37:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:37:04,574 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-12-14 13:37:04,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 23 states have internal predecessors, (56), 7 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-14 13:37:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-12-14 13:37:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-14 13:37:04,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:37:04,575 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:37:04,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 13:37:04,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:37:04,788 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:37:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:37:04,788 INFO L85 PathProgramCache]: Analyzing trace with hash -588595988, now seen corresponding path program 1 times [2021-12-14 13:37:04,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:37:04,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151135113] [2021-12-14 13:37:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:37:04,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:37:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:37:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 13:37:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:04,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 13:37:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:04,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 13:37:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-14 13:37:04,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:37:04,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151135113] [2021-12-14 13:37:04,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151135113] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:37:04,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178720281] [2021-12-14 13:37:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:37:04,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:37:04,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:37:04,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:37:04,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 13:37:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:37:04,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-14 13:37:04,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:37:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 13:37:05,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:37:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 13:37:05,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178720281] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:37:05,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:37:05,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 16 [2021-12-14 13:37:05,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603066323] [2021-12-14 13:37:05,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:37:05,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 13:37:05,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:37:05,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 13:37:05,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-14 13:37:05,175 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-14 13:37:05,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:37:05,284 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-12-14 13:37:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 13:37:05,284 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2021-12-14 13:37:05,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:37:05,286 INFO L225 Difference]: With dead ends: 37 [2021-12-14 13:37:05,286 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 13:37:05,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-12-14 13:37:05,287 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 13:37:05,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 82 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 13:37:05,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 13:37:05,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 13:37:05,288 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) [2021-12-14 13:37:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 13:37:05,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-12-14 13:37:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:37:05,288 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 13:37:05,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-14 13:37:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 13:37:05,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 13:37:05,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 13:37:05,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 13:37:05,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:37:05,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-14 13:37:05,843 INFO L858 garLoopResultBuilder]: For program point my_mallocFINAL(lines 528 530) no Hoare annotation was computed. [2021-12-14 13:37:05,844 INFO L854 garLoopResultBuilder]: At program point my_mallocENTRY(lines 528 530) the Hoare annotation is: (or (not (= |my_malloc_#in~size#1| 8)) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) [2021-12-14 13:37:05,844 INFO L854 garLoopResultBuilder]: At program point L526(lines 520 527) the Hoare annotation is: (let ((.cse0 (not (= |my_malloc_#in~size#1| 8)))) (and (or (= |my_malloc___getMemory_~size#1| 8) .cse0) (or (not (<= ~elem~0.offset 0)) (and (<= ~guard_malloc_counter~0.offset |my_malloc___getMemory_#res#1.offset|) (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (= |my_malloc___getMemory_#res#1.base| |old(~guard_malloc_counter~0.base)|) (<= |my_malloc___getMemory_#res#1.offset| ~guard_malloc_counter~0.offset) (= ~guard_malloc_counter~0.base 0)) (and (<= 0 |my_malloc___getMemory_#res#1.base|) (<= |my_malloc___getMemory_#res#1.offset| 0) (<= 0 |my_malloc___getMemory_#res#1.offset|) (<= |my_malloc___getMemory_#res#1.base| 0)) .cse0 (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))))) [2021-12-14 13:37:05,844 INFO L858 garLoopResultBuilder]: For program point L524(lines 524 525) no Hoare annotation was computed. [2021-12-14 13:37:05,844 INFO L858 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2021-12-14 13:37:05,844 INFO L854 garLoopResultBuilder]: At program point L522-2(line 522) the Hoare annotation is: (not (= |my_malloc_#in~size#1| 8)) [2021-12-14 13:37:05,844 INFO L858 garLoopResultBuilder]: For program point L522-3(line 522) no Hoare annotation was computed. [2021-12-14 13:37:05,844 INFO L858 garLoopResultBuilder]: For program point my_mallocEXIT(lines 528 530) no Hoare annotation was computed. [2021-12-14 13:37:05,844 INFO L854 garLoopResultBuilder]: At program point list_addENTRY(lines 535 539) the Hoare annotation is: (and (or (not (<= |old(~elem~0.offset)| 0)) (not (<= 1 ~guard_malloc_counter~0.offset)) (<= ~elem~0.offset 0) (not (<= 2 |list_add_#in~new.offset|))) (or (= |old(~elem~0.offset)| |list_add_#in~new.offset|) (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= ~guard_malloc_counter~0.base 0)))) [2021-12-14 13:37:05,844 INFO L858 garLoopResultBuilder]: For program point L537(lines 537 538) no Hoare annotation was computed. [2021-12-14 13:37:05,844 INFO L858 garLoopResultBuilder]: For program point L536(line 536) no Hoare annotation was computed. [2021-12-14 13:37:05,844 INFO L858 garLoopResultBuilder]: For program point L537-2(lines 535 539) no Hoare annotation was computed. [2021-12-14 13:37:05,844 INFO L854 garLoopResultBuilder]: At program point L536-2(line 536) the Hoare annotation is: (and (or (= |old(~elem~0.offset)| |list_add_#in~new.offset|) (not (= ~guard_malloc_counter~0.base 0))) (or (not (<= |old(~elem~0.offset)| 0)) (not (<= 1 ~guard_malloc_counter~0.offset)) (not (<= 2 |list_add_#in~new.offset|)))) [2021-12-14 13:37:05,844 INFO L858 garLoopResultBuilder]: For program point L536-3(line 536) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point list_addEXIT(lines 535 539) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L861 garLoopResultBuilder]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point L541(lines 541 542) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L854 garLoopResultBuilder]: At program point L550(line 550) the Hoare annotation is: (and (= |ULTIMATE.start_main_~dev2~0#1.base| 0) (<= (+ |ULTIMATE.start_main_~dev1~0#1.offset| 1) |ULTIMATE.start_main_~dev2~0#1.offset|) (= ~elem~0.offset 0) (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) (= ~guard_malloc_counter~0.base 0) (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset)) [2021-12-14 13:37:05,845 INFO L854 garLoopResultBuilder]: At program point L550-1(line 550) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~dev2~0#1.base| 0)) (.cse1 (+ |ULTIMATE.start_main_~dev1~0#1.offset| 1)) (.cse2 (= ~guard_malloc_counter~0.base 0)) (.cse3 (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset))) (or (and .cse0 (<= .cse1 |ULTIMATE.start_main_~dev2~0#1.offset|) (= ~elem~0.offset 0) (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) .cse2 .cse3) (and (= ~elem~0.offset |ULTIMATE.start_main_~dev2~0#1.offset|) .cse0 (not (= 0 |ULTIMATE.start_main_~dev2~0#1.offset|)) (= ~elem~0.base |ULTIMATE.start_main_~dev2~0#1.base|) (<= .cse1 ~elem~0.offset) .cse2 .cse3))) [2021-12-14 13:37:05,845 INFO L854 garLoopResultBuilder]: At program point L548(line 548) the Hoare annotation is: (or (and (= ~elem~0.offset 0) (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) (= ~guard_malloc_counter~0.base 0) (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset)) (and (= |ULTIMATE.start_main_~dev1~0#1.base| 0) (= |ULTIMATE.start_main_~dev1~0#1.offset| 0))) [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point L548-1(line 548) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L858 garLoopResultBuilder]: For program point L540(lines 540 543) no Hoare annotation was computed. [2021-12-14 13:37:05,845 INFO L861 garLoopResultBuilder]: At program point L555(lines 545 556) the Hoare annotation is: true [2021-12-14 13:37:05,845 INFO L854 garLoopResultBuilder]: At program point L553(line 553) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~dev2~0#1.base| 0)) (.cse1 (<= (+ |ULTIMATE.start_main_~dev1~0#1.offset| 1) |ULTIMATE.start_main_~dev2~0#1.offset|)) (.cse2 (not (= 0 |ULTIMATE.start_main_~dev2~0#1.offset|))) (.cse3 (= ~guard_malloc_counter~0.base 0)) (.cse4 (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset))) (or (and .cse0 .cse1 .cse2 (= ~elem~0.offset 0) .cse3 .cse4) (let ((.cse5 (+ ~elem~0.offset 1))) (and (<= .cse5 |ULTIMATE.start_main_~dev2~0#1.offset|) .cse0 .cse1 .cse2 (<= .cse5 |ULTIMATE.start_list_del_~entry#1.offset|) .cse3 .cse4)) (and (<= 2 |ULTIMATE.start_main_~dev2~0#1.offset|) (<= 1 ~guard_malloc_counter~0.offset) (<= ~elem~0.offset 0)))) [2021-12-14 13:37:05,846 INFO L858 garLoopResultBuilder]: For program point L551(line 551) no Hoare annotation was computed. [2021-12-14 13:37:05,846 INFO L858 garLoopResultBuilder]: For program point L549(lines 549 554) no Hoare annotation was computed. [2021-12-14 13:37:05,846 INFO L858 garLoopResultBuilder]: For program point L549-1(lines 549 554) no Hoare annotation was computed. [2021-12-14 13:37:05,846 INFO L854 garLoopResultBuilder]: At program point L547(line 547) the Hoare annotation is: (and (= ~guard_malloc_counter~0.offset 0) (= ~elem~0.offset 0) (= ~guard_malloc_counter~0.base 0)) [2021-12-14 13:37:05,846 INFO L858 garLoopResultBuilder]: For program point L547-1(line 547) no Hoare annotation was computed. [2021-12-14 13:37:05,848 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:37:05,849 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:37:05,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:37:05 BoogieIcfgContainer [2021-12-14 13:37:05,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 13:37:05,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 13:37:05,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 13:37:05,861 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 13:37:05,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:36:58" (3/4) ... [2021-12-14 13:37:05,863 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 13:37:05,867 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure my_malloc [2021-12-14 13:37:05,867 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure list_add [2021-12-14 13:37:05,867 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __blast_assert [2021-12-14 13:37:05,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-14 13:37:05,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-14 13:37:05,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 13:37:05,872 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 13:37:05,895 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (size == 8 || !(\old(size) == 8)) && (((((!(elem <= 0) || ((((guard_malloc_counter <= \result && \old(guard_malloc_counter) + 1 <= guard_malloc_counter) && \result == \old(guard_malloc_counter)) && \result <= guard_malloc_counter) && guard_malloc_counter == 0)) || (((0 <= \result && \result <= 0) && 0 <= \result) && \result <= 0)) || !(\old(size) == 8)) || !(\old(guard_malloc_counter) == 0)) || !(0 <= \old(guard_malloc_counter))) [2021-12-14 13:37:05,901 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 13:37:05,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 13:37:05,902 INFO L158 Benchmark]: Toolchain (without parser) took 8163.76ms. Allocated memory was 111.1MB in the beginning and 172.0MB in the end (delta: 60.8MB). Free memory was 79.8MB in the beginning and 122.9MB in the end (delta: -43.1MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-12-14 13:37:05,902 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:37:05,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.48ms. Allocated memory is still 111.1MB. Free memory was 79.8MB in the beginning and 80.9MB in the end (delta: -1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 13:37:05,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.84ms. Allocated memory is still 111.1MB. Free memory was 80.9MB in the beginning and 79.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:37:05,902 INFO L158 Benchmark]: Boogie Preprocessor took 40.41ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 78.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:37:05,903 INFO L158 Benchmark]: RCFGBuilder took 247.03ms. Allocated memory is still 111.1MB. Free memory was 78.0MB in the beginning and 66.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 13:37:05,903 INFO L158 Benchmark]: TraceAbstraction took 7468.08ms. Allocated memory was 111.1MB in the beginning and 172.0MB in the end (delta: 60.8MB). Free memory was 66.2MB in the beginning and 126.0MB in the end (delta: -59.9MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. [2021-12-14 13:37:05,903 INFO L158 Benchmark]: Witness Printer took 40.43ms. Allocated memory is still 172.0MB. Free memory was 126.0MB in the beginning and 122.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:37:05,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.48ms. Allocated memory is still 111.1MB. Free memory was 79.8MB in the beginning and 80.9MB in the end (delta: -1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.84ms. Allocated memory is still 111.1MB. Free memory was 80.9MB in the beginning and 79.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.41ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 78.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 247.03ms. Allocated memory is still 111.1MB. Free memory was 78.0MB in the beginning and 66.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7468.08ms. Allocated memory was 111.1MB in the beginning and 172.0MB in the end (delta: 60.8MB). Free memory was 66.2MB in the beginning and 126.0MB in the end (delta: -59.9MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. * Witness Printer took 40.43ms. Allocated memory is still 172.0MB. Free memory was 126.0MB in the beginning and 122.9MB 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: 6]: 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 4 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 394 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 394 mSDsluCounter, 930 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 713 mSDsCounter, 197 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2253 IncrementalHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 197 mSolverCounterUnsat, 217 mSDtfsCounter, 2253 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 549 GetRequests, 356 SyntacticMatches, 5 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 61 PreInvPairs, 76 NumberOfFragments, 290 HoareAnnotationTreeSize, 61 FomulaSimplifications, 80 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 862 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 441 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 600 ConstructedInterpolants, 0 QuantifiedInterpolants, 2173 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1223 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 117/198 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: 545]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 520]: Loop Invariant Derived loop invariant: (size == 8 || !(\old(size) == 8)) && (((((!(elem <= 0) || ((((guard_malloc_counter <= \result && \old(guard_malloc_counter) + 1 <= guard_malloc_counter) && \result == \old(guard_malloc_counter)) && \result <= guard_malloc_counter) && guard_malloc_counter == 0)) || (((0 <= \result && \result <= 0) && 0 <= \result) && \result <= 0)) || !(\old(size) == 8)) || !(\old(guard_malloc_counter) == 0)) || !(0 <= \old(guard_malloc_counter))) RESULT: Ultimate proved your program to be correct! [2021-12-14 13:37:05,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE