./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/bitvector/soft_float_4-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/bitvector/soft_float_4-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 20:06:14,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 20:06:14,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 20:06:14,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 20:06:14,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 20:06:14,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 20:06:15,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 20:06:15,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 20:06:15,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 20:06:15,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 20:06:15,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 20:06:15,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 20:06:15,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 20:06:15,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 20:06:15,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 20:06:15,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 20:06:15,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 20:06:15,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 20:06:15,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 20:06:15,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 20:06:15,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 20:06:15,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 20:06:15,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 20:06:15,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 20:06:15,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 20:06:15,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 20:06:15,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 20:06:15,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 20:06:15,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 20:06:15,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 20:06:15,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 20:06:15,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 20:06:15,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 20:06:15,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 20:06:15,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 20:06:15,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 20:06:15,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 20:06:15,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 20:06:15,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 20:06:15,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 20:06:15,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 20:06:15,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 20:06:15,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 20:06:15,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 20:06:15,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 20:06:15,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 20:06:15,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 20:06:15,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 20:06:15,095 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 20:06:15,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 20:06:15,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 20:06:15,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 20:06:15,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 20:06:15,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 20:06:15,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 20:06:15,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 20:06:15,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 20:06:15,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 20:06:15,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 20:06:15,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 20:06:15,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 20:06:15,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 20:06:15,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 20:06:15,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 20:06:15,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:06:15,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 20:06:15,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 20:06:15,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 20:06:15,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 20:06:15,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 20:06:15,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 20:06:15,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 20:06:15,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2021-08-25 20:06:15,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 20:06:15,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 20:06:15,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 20:06:15,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 20:06:15,436 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 20:06:15,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-08-25 20:06:15,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1cd4b62/a0463848332742cab328f75d3c3ea958/FLAG2ab2a3f5a [2021-08-25 20:06:15,913 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 20:06:15,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-08-25 20:06:15,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1cd4b62/a0463848332742cab328f75d3c3ea958/FLAG2ab2a3f5a [2021-08-25 20:06:15,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1cd4b62/a0463848332742cab328f75d3c3ea958 [2021-08-25 20:06:15,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 20:06:15,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 20:06:15,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 20:06:15,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 20:06:15,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 20:06:15,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:06:15" (1/1) ... [2021-08-25 20:06:15,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34bd9432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:15, skipping insertion in model container [2021-08-25 20:06:15,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:06:15" (1/1) ... [2021-08-25 20:06:15,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 20:06:15,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 20:06:16,101 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-08-25 20:06:16,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:06:16,160 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 20:06:16,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-08-25 20:06:16,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:06:16,235 INFO L208 MainTranslator]: Completed translation [2021-08-25 20:06:16,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16 WrapperNode [2021-08-25 20:06:16,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 20:06:16,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 20:06:16,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 20:06:16,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 20:06:16,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 20:06:16,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 20:06:16,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 20:06:16,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 20:06:16,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 20:06:16,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 20:06:16,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 20:06:16,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 20:06:16,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (1/1) ... [2021-08-25 20:06:16,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:06:16,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:06:16,362 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) [2021-08-25 20:06:16,382 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 [2021-08-25 20:06:16,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 20:06:16,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 20:06:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 20:06:16,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 20:06:16,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 20:06:16,699 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-08-25 20:06:16,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:16 BoogieIcfgContainer [2021-08-25 20:06:16,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 20:06:16,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 20:06:16,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 20:06:16,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 20:06:16,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:06:15" (1/3) ... [2021-08-25 20:06:16,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bd094d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:06:16, skipping insertion in model container [2021-08-25 20:06:16,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:16" (2/3) ... [2021-08-25 20:06:16,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bd094d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:06:16, skipping insertion in model container [2021-08-25 20:06:16,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:16" (3/3) ... [2021-08-25 20:06:16,705 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-08-25 20:06:16,709 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 20:06:16,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-25 20:06:16,737 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 20:06:16,741 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-25 20:06:16,741 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-25 20:06:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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) [2021-08-25 20:06:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-25 20:06:16,756 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:16,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:16,757 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2021-08-25 20:06:16,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:16,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259051949] [2021-08-25 20:06:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:16,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:16,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:16,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259051949] [2021-08-25 20:06:16,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259051949] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:16,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:16,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-25 20:06:16,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638727529] [2021-08-25 20:06:16,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-25 20:06:16,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:16,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-25 20:06:16,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-25 20:06:16,958 INFO L87 Difference]: Start difference. First operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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) Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-08-25 20:06:17,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:17,196 INFO L93 Difference]: Finished difference Result 273 states and 400 transitions. [2021-08-25 20:06:17,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-25 20:06:17,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) Word has length 15 [2021-08-25 20:06:17,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:17,211 INFO L225 Difference]: With dead ends: 273 [2021-08-25 20:06:17,212 INFO L226 Difference]: Without dead ends: 181 [2021-08-25 20:06:17,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 81.1ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-08-25 20:06:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-08-25 20:06:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 119. [2021-08-25 20:06:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 118 states have internal predecessors, (162), 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) [2021-08-25 20:06:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2021-08-25 20:06:17,263 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 15 [2021-08-25 20:06:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:17,264 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2021-08-25 20:06:17,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-08-25 20:06:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2021-08-25 20:06:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-25 20:06:17,265 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:17,266 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:17,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 20:06:17,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1395490240, now seen corresponding path program 1 times [2021-08-25 20:06:17,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:17,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351799426] [2021-08-25 20:06:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:17,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:17,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:17,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351799426] [2021-08-25 20:06:17,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351799426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:17,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:17,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-25 20:06:17,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543383348] [2021-08-25 20:06:17,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-25 20:06:17,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-25 20:06:17,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-25 20:06:17,438 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-08-25 20:06:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:17,559 INFO L93 Difference]: Finished difference Result 194 states and 243 transitions. [2021-08-25 20:06:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-25 20:06:17,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) Word has length 19 [2021-08-25 20:06:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:17,563 INFO L225 Difference]: With dead ends: 194 [2021-08-25 20:06:17,563 INFO L226 Difference]: Without dead ends: 165 [2021-08-25 20:06:17,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-25 20:06:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-08-25 20:06:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 108. [2021-08-25 20:06:17,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 107 states have internal predecessors, (144), 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) [2021-08-25 20:06:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2021-08-25 20:06:17,581 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2021-08-25 20:06:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:17,582 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2021-08-25 20:06:17,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-08-25 20:06:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2021-08-25 20:06:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 20:06:17,584 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:17,584 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:17,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 20:06:17,584 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:17,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1649339140, now seen corresponding path program 1 times [2021-08-25 20:06:17,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:17,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707418989] [2021-08-25 20:06:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:17,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:17,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:17,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707418989] [2021-08-25 20:06:17,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707418989] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:17,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:17,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-25 20:06:17,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170877706] [2021-08-25 20:06:17,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-25 20:06:17,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-25 20:06:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-08-25 20:06:17,795 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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) [2021-08-25 20:06:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:18,063 INFO L93 Difference]: Finished difference Result 167 states and 210 transitions. [2021-08-25 20:06:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-25 20:06:18,064 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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) Word has length 23 [2021-08-25 20:06:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:18,065 INFO L225 Difference]: With dead ends: 167 [2021-08-25 20:06:18,065 INFO L226 Difference]: Without dead ends: 162 [2021-08-25 20:06:18,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 189.7ms TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-08-25 20:06:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-08-25 20:06:18,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 117. [2021-08-25 20:06:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 116 states have internal predecessors, (153), 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) [2021-08-25 20:06:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2021-08-25 20:06:18,070 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 23 [2021-08-25 20:06:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:18,070 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2021-08-25 20:06:18,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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) [2021-08-25 20:06:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2021-08-25 20:06:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 20:06:18,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:18,072 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:18,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-25 20:06:18,072 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:18,072 INFO L82 PathProgramCache]: Analyzing trace with hash 207332738, now seen corresponding path program 1 times [2021-08-25 20:06:18,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:18,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881775274] [2021-08-25 20:06:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:18,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:18,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:18,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881775274] [2021-08-25 20:06:18,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881775274] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:18,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:18,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-25 20:06:18,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915167486] [2021-08-25 20:06:18,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-25 20:06:18,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-25 20:06:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-25 20:06:18,125 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-08-25 20:06:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:18,206 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2021-08-25 20:06:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-25 20:06:18,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) Word has length 23 [2021-08-25 20:06:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:18,208 INFO L225 Difference]: With dead ends: 183 [2021-08-25 20:06:18,208 INFO L226 Difference]: Without dead ends: 158 [2021-08-25 20:06:18,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-25 20:06:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-08-25 20:06:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 120. [2021-08-25 20:06:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 113 states have (on average 1.3893805309734513) internal successors, (157), 119 states have internal predecessors, (157), 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) [2021-08-25 20:06:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-08-25 20:06:18,213 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2021-08-25 20:06:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:18,213 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-08-25 20:06:18,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-08-25 20:06:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-08-25 20:06:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 20:06:18,214 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:18,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:18,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 20:06:18,215 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:18,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:18,215 INFO L82 PathProgramCache]: Analyzing trace with hash 207392320, now seen corresponding path program 1 times [2021-08-25 20:06:18,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:18,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890634323] [2021-08-25 20:06:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:18,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:18,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:18,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890634323] [2021-08-25 20:06:18,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890634323] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:18,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:18,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-25 20:06:18,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612086301] [2021-08-25 20:06:18,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-25 20:06:18,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-25 20:06:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-25 20:06:18,285 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-08-25 20:06:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:18,359 INFO L93 Difference]: Finished difference Result 167 states and 211 transitions. [2021-08-25 20:06:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-25 20:06:18,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) Word has length 23 [2021-08-25 20:06:18,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:18,360 INFO L225 Difference]: With dead ends: 167 [2021-08-25 20:06:18,360 INFO L226 Difference]: Without dead ends: 142 [2021-08-25 20:06:18,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-25 20:06:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-25 20:06:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 120. [2021-08-25 20:06:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 113 states have (on average 1.3893805309734513) internal successors, (157), 119 states have internal predecessors, (157), 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) [2021-08-25 20:06:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-08-25 20:06:18,365 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2021-08-25 20:06:18,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:18,366 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-08-25 20:06:18,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-08-25 20:06:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-08-25 20:06:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 20:06:18,367 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:18,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:18,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-25 20:06:18,367 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2021-08-25 20:06:18,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:18,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622419362] [2021-08-25 20:06:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:18,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:18,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:06:18,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622419362] [2021-08-25 20:06:18,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622419362] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:18,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:18,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-25 20:06:18,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704581978] [2021-08-25 20:06:18,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-25 20:06:18,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:06:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-25 20:06:18,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-25 20:06:18,435 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-08-25 20:06:18,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:18,562 INFO L93 Difference]: Finished difference Result 342 states and 430 transitions. [2021-08-25 20:06:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-25 20:06:18,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) Word has length 23 [2021-08-25 20:06:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:18,564 INFO L225 Difference]: With dead ends: 342 [2021-08-25 20:06:18,564 INFO L226 Difference]: Without dead ends: 296 [2021-08-25 20:06:18,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-08-25 20:06:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-08-25 20:06:18,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 134. [2021-08-25 20:06:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 127 states have (on average 1.3937007874015748) internal successors, (177), 133 states have internal predecessors, (177), 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) [2021-08-25 20:06:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2021-08-25 20:06:18,568 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 23 [2021-08-25 20:06:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:18,569 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2021-08-25 20:06:18,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-08-25 20:06:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2021-08-25 20:06:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 20:06:18,570 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:18,570 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:18,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-25 20:06:18,570 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:18,571 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2021-08-25 20:06:18,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:06:18,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995612066] [2021-08-25 20:06:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:18,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:06:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:06:18,584 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 20:06:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:06:18,628 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 20:06:18,629 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 20:06:18,629 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:18,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:18,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:18,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:18,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:18,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:18,632 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:18,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-25 20:06:18,635 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 20:06:18,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:06:18 BoogieIcfgContainer [2021-08-25 20:06:18,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 20:06:18,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 20:06:18,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 20:06:18,655 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 20:06:18,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:16" (3/4) ... [2021-08-25 20:06:18,657 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-25 20:06:18,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 20:06:18,658 INFO L168 Benchmark]: Toolchain (without parser) took 2715.40 ms. Allocated memory was 50.3 MB in the beginning and 107.0 MB in the end (delta: 56.6 MB). Free memory was 27.1 MB in the beginning and 55.3 MB in the end (delta: -28.2 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:18,658 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.4 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:06:18,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.57 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.9 MB in the beginning and 42.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:18,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.93 ms. Allocated memory is still 60.8 MB. Free memory was 42.6 MB in the beginning and 40.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:18,659 INFO L168 Benchmark]: Boogie Preprocessor took 45.13 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 38.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:18,660 INFO L168 Benchmark]: RCFGBuilder took 361.42 ms. Allocated memory is still 60.8 MB. Free memory was 38.6 MB in the beginning and 40.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:18,660 INFO L168 Benchmark]: TraceAbstraction took 1952.97 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 39.9 MB in the beginning and 56.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:18,660 INFO L168 Benchmark]: Witness Printer took 2.54 ms. Allocated memory is still 107.0 MB. Free memory was 56.2 MB in the beginning and 55.3 MB in the end (delta: 862.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:18,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.4 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.57 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.9 MB in the beginning and 42.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.93 ms. Allocated memory is still 60.8 MB. Free memory was 42.6 MB in the beginning and 40.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.13 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 38.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 361.42 ms. Allocated memory is still 60.8 MB. Free memory was 38.6 MB in the beginning and 40.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1952.97 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 39.9 MB in the beginning and 56.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * Witness Printer took 2.54 ms. Allocated memory is still 107.0 MB. Free memory was 56.2 MB in the beginning and 55.3 MB in the end (delta: 862.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 1898.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 11.3ms, AutomataDifference: 955.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 720 SDtfs, 1227 SDslu, 3468 SDs, 0 SdLazy, 649 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 383.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 447.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=6, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 74.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 386 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.3ms SsaConstructionTime, 149.1ms SatisfiabilityAnalysisTime, 504.1ms InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-25 20:06:18,677 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 20:06:20,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 20:06:20,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 20:06:20,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 20:06:20,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 20:06:20,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 20:06:20,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 20:06:20,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 20:06:20,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 20:06:20,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 20:06:20,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 20:06:20,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 20:06:20,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 20:06:20,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 20:06:20,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 20:06:20,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 20:06:20,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 20:06:20,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 20:06:20,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 20:06:20,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 20:06:20,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 20:06:20,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 20:06:20,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 20:06:20,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 20:06:20,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 20:06:20,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 20:06:20,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 20:06:20,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 20:06:20,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 20:06:20,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 20:06:20,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 20:06:20,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 20:06:20,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 20:06:20,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 20:06:20,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 20:06:20,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 20:06:20,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 20:06:20,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 20:06:20,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 20:06:20,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 20:06:20,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 20:06:20,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-25 20:06:21,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 20:06:21,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 20:06:21,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 20:06:21,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 20:06:21,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 20:06:21,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 20:06:21,022 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 20:06:21,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 20:06:21,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 20:06:21,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 20:06:21,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 20:06:21,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 20:06:21,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 20:06:21,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 20:06:21,024 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-25 20:06:21,025 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-25 20:06:21,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 20:06:21,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 20:06:21,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 20:06:21,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 20:06:21,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 20:06:21,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 20:06:21,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 20:06:21,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:06:21,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 20:06:21,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 20:06:21,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 20:06:21,027 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-25 20:06:21,027 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-25 20:06:21,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 20:06:21,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 20:06:21,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-25 20:06:21,028 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2021-08-25 20:06:21,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 20:06:21,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 20:06:21,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 20:06:21,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 20:06:21,363 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 20:06:21,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-08-25 20:06:21,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39c538387/bbad9a26c2a64e2090508fb0264714f9/FLAGff2a3571c [2021-08-25 20:06:21,834 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 20:06:21,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-08-25 20:06:21,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39c538387/bbad9a26c2a64e2090508fb0264714f9/FLAGff2a3571c [2021-08-25 20:06:22,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39c538387/bbad9a26c2a64e2090508fb0264714f9 [2021-08-25 20:06:22,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 20:06:22,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 20:06:22,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 20:06:22,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 20:06:22,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 20:06:22,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7265e33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22, skipping insertion in model container [2021-08-25 20:06:22,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 20:06:22,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 20:06:22,368 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-08-25 20:06:22,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:06:22,427 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 20:06:22,453 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-08-25 20:06:22,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:06:22,505 INFO L208 MainTranslator]: Completed translation [2021-08-25 20:06:22,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22 WrapperNode [2021-08-25 20:06:22,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 20:06:22,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 20:06:22,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 20:06:22,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 20:06:22,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 20:06:22,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 20:06:22,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 20:06:22,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 20:06:22,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 20:06:22,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 20:06:22,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 20:06:22,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 20:06:22,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (1/1) ... [2021-08-25 20:06:22,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:06:22,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:06:22,691 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) [2021-08-25 20:06:22,729 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 [2021-08-25 20:06:22,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-25 20:06:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 20:06:22,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 20:06:22,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 20:06:23,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 20:06:23,100 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-08-25 20:06:23,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:23 BoogieIcfgContainer [2021-08-25 20:06:23,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 20:06:23,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 20:06:23,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 20:06:23,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 20:06:23,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:06:22" (1/3) ... [2021-08-25 20:06:23,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373c9162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:06:23, skipping insertion in model container [2021-08-25 20:06:23,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:22" (2/3) ... [2021-08-25 20:06:23,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373c9162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:06:23, skipping insertion in model container [2021-08-25 20:06:23,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:23" (3/3) ... [2021-08-25 20:06:23,115 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-08-25 20:06:23,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 20:06:23,119 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-25 20:06:23,156 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 20:06:23,161 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-25 20:06:23,161 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-25 20:06:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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) [2021-08-25 20:06:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-25 20:06:23,178 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:23,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:23,179 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:23,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:23,183 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2021-08-25 20:06:23,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:06:23,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486541202] [2021-08-25 20:06:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:23,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:06:23,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:06:23,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:06:23,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-25 20:06:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:23,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-25 20:06:23,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:23,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:06:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:23,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:06:23,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486541202] [2021-08-25 20:06:23,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486541202] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:23,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:23,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-25 20:06:23,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89568015] [2021-08-25 20:06:23,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-25 20:06:23,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:06:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-25 20:06:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-25 20:06:23,549 INFO L87 Difference]: Start difference. First operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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) Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-08-25 20:06:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:23,704 INFO L93 Difference]: Finished difference Result 231 states and 333 transitions. [2021-08-25 20:06:23,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-25 20:06:23,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 15 [2021-08-25 20:06:23,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:23,716 INFO L225 Difference]: With dead ends: 231 [2021-08-25 20:06:23,717 INFO L226 Difference]: Without dead ends: 139 [2021-08-25 20:06:23,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-25 20:06:23,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-08-25 20:06:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2021-08-25 20:06:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 85 states have internal predecessors, (115), 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) [2021-08-25 20:06:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2021-08-25 20:06:23,778 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2021-08-25 20:06:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:23,778 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2021-08-25 20:06:23,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-08-25 20:06:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2021-08-25 20:06:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-25 20:06:23,781 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:23,781 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:23,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-25 20:06:23,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:06:23,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:23,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1518313747, now seen corresponding path program 1 times [2021-08-25 20:06:23,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:06:23,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229853730] [2021-08-25 20:06:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:23,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:06:23,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:06:24,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:06:24,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-25 20:06:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:24,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-25 20:06:24,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:24,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:06:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:24,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:06:24,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229853730] [2021-08-25 20:06:24,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229853730] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:24,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:24,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-08-25 20:06:24,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869932967] [2021-08-25 20:06:24,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-25 20:06:24,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:06:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-25 20:06:24,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-25 20:06:24,199 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-25 20:06:24,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:24,340 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2021-08-25 20:06:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-25 20:06:24,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) Word has length 19 [2021-08-25 20:06:24,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:24,343 INFO L225 Difference]: With dead ends: 226 [2021-08-25 20:06:24,343 INFO L226 Difference]: Without dead ends: 200 [2021-08-25 20:06:24,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 60.7ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-08-25 20:06:24,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-08-25 20:06:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2021-08-25 20:06:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 118 states have internal predecessors, (162), 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) [2021-08-25 20:06:24,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2021-08-25 20:06:24,353 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2021-08-25 20:06:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:24,353 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2021-08-25 20:06:24,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-25 20:06:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2021-08-25 20:06:24,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-25 20:06:24,355 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:24,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:24,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:24,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:06:24,565 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:24,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2021-08-25 20:06:24,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:06:24,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682587174] [2021-08-25 20:06:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:24,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:06:24,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:06:24,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:06:24,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-25 20:06:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:24,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-25 20:06:24,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:24,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:06:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:24,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:06:24,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682587174] [2021-08-25 20:06:24,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682587174] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:24,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:24,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-08-25 20:06:24,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726209316] [2021-08-25 20:06:24,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-25 20:06:24,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:06:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-25 20:06:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-25 20:06:24,792 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-08-25 20:06:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:24,991 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2021-08-25 20:06:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-25 20:06:24,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) Word has length 19 [2021-08-25 20:06:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:24,993 INFO L225 Difference]: With dead ends: 214 [2021-08-25 20:06:24,993 INFO L226 Difference]: Without dead ends: 185 [2021-08-25 20:06:24,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 104.5ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-08-25 20:06:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-25 20:06:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2021-08-25 20:06:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 107 states have internal predecessors, (144), 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) [2021-08-25 20:06:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2021-08-25 20:06:25,000 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2021-08-25 20:06:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:25,000 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2021-08-25 20:06:25,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-08-25 20:06:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2021-08-25 20:06:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 20:06:25,001 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:25,002 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:25,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:25,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:06:25,211 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:25,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:25,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1649339140, now seen corresponding path program 1 times [2021-08-25 20:06:25,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:06:25,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292855670] [2021-08-25 20:06:25,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:25,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:06:25,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:06:25,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:06:25,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-25 20:06:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:25,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-25 20:06:25,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:25,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:06:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:25,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:06:25,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292855670] [2021-08-25 20:06:25,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292855670] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:25,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:25,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-08-25 20:06:25,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691431342] [2021-08-25 20:06:25,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-25 20:06:25,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:06:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-25 20:06:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-25 20:06:25,513 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-08-25 20:06:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:25,740 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2021-08-25 20:06:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-25 20:06:25,741 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) Word has length 23 [2021-08-25 20:06:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:25,743 INFO L225 Difference]: With dead ends: 183 [2021-08-25 20:06:25,743 INFO L226 Difference]: Without dead ends: 179 [2021-08-25 20:06:25,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-08-25 20:06:25,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-08-25 20:06:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2021-08-25 20:06:25,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 118 states have (on average 1.4067796610169492) internal successors, (166), 124 states have internal predecessors, (166), 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) [2021-08-25 20:06:25,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2021-08-25 20:06:25,751 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2021-08-25 20:06:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:25,751 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2021-08-25 20:06:25,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-08-25 20:06:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2021-08-25 20:06:25,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 20:06:25,753 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:25,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:25,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:25,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:06:25,963 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:25,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:25,963 INFO L82 PathProgramCache]: Analyzing trace with hash 207332738, now seen corresponding path program 1 times [2021-08-25 20:06:25,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:06:25,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070833675] [2021-08-25 20:06:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:25,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:06:25,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:06:25,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:06:25,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-25 20:06:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:26,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-25 20:06:26,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:26,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:06:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:26,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:06:26,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070833675] [2021-08-25 20:06:26,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070833675] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:26,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:26,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-08-25 20:06:26,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079565965] [2021-08-25 20:06:26,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-25 20:06:26,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:06:26,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-25 20:06:26,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-25 20:06:26,234 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-08-25 20:06:26,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:26,358 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2021-08-25 20:06:26,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-25 20:06:26,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) Word has length 23 [2021-08-25 20:06:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:26,360 INFO L225 Difference]: With dead ends: 182 [2021-08-25 20:06:26,360 INFO L226 Difference]: Without dead ends: 149 [2021-08-25 20:06:26,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-25 20:06:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-08-25 20:06:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2021-08-25 20:06:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 112 states have (on average 1.3928571428571428) internal successors, (156), 118 states have internal predecessors, (156), 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) [2021-08-25 20:06:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2021-08-25 20:06:26,366 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2021-08-25 20:06:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:26,366 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2021-08-25 20:06:26,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-08-25 20:06:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2021-08-25 20:06:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 20:06:26,367 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:26,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:26,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:26,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:06:26,578 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:26,578 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2021-08-25 20:06:26,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:06:26,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646822390] [2021-08-25 20:06:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:26,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:06:26,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:06:26,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:06:26,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-25 20:06:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:26,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-25 20:06:26,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:26,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:06:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:26,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:06:26,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646822390] [2021-08-25 20:06:26,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646822390] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:26,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:26,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-08-25 20:06:26,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947068269] [2021-08-25 20:06:26,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-25 20:06:26,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:06:26,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-25 20:06:26,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-25 20:06:26,904 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-08-25 20:06:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:27,424 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2021-08-25 20:06:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-25 20:06:27,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) Word has length 23 [2021-08-25 20:06:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:27,426 INFO L225 Difference]: With dead ends: 369 [2021-08-25 20:06:27,426 INFO L226 Difference]: Without dead ends: 323 [2021-08-25 20:06:27,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 261.2ms TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-08-25 20:06:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-08-25 20:06:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2021-08-25 20:06:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 128 states have internal predecessors, (172), 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) [2021-08-25 20:06:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2021-08-25 20:06:27,435 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2021-08-25 20:06:27,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:27,435 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2021-08-25 20:06:27,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-08-25 20:06:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2021-08-25 20:06:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-25 20:06:27,436 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:27,436 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:27,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:27,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:06:27,647 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:27,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:27,647 INFO L82 PathProgramCache]: Analyzing trace with hash -120407082, now seen corresponding path program 1 times [2021-08-25 20:06:27,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:06:27,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193221810] [2021-08-25 20:06:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:27,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:06:27,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:06:27,650 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:06:27,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-25 20:06:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:27,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-25 20:06:27,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:27,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:06:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:27,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:06:27,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193221810] [2021-08-25 20:06:27,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193221810] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:27,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:27,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-08-25 20:06:27,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260150107] [2021-08-25 20:06:27,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-25 20:06:27,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:06:27,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-25 20:06:27,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-25 20:06:27,987 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-08-25 20:06:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:28,266 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2021-08-25 20:06:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-25 20:06:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) Word has length 25 [2021-08-25 20:06:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:28,267 INFO L225 Difference]: With dead ends: 179 [2021-08-25 20:06:28,267 INFO L226 Difference]: Without dead ends: 174 [2021-08-25 20:06:28,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 161.8ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-08-25 20:06:28,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-08-25 20:06:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-08-25 20:06:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.3576642335766422) internal successors, (186), 141 states have internal predecessors, (186), 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) [2021-08-25 20:06:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2021-08-25 20:06:28,276 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2021-08-25 20:06:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:28,276 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2021-08-25 20:06:28,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-08-25 20:06:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2021-08-25 20:06:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-25 20:06:28,277 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:28,278 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:28,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:28,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:06:28,488 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:28,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:28,488 INFO L82 PathProgramCache]: Analyzing trace with hash -118560040, now seen corresponding path program 1 times [2021-08-25 20:06:28,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:06:28,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083306851] [2021-08-25 20:06:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:28,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:06:28,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:06:28,490 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:06:28,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-25 20:06:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:06:28,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-25 20:06:28,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 20:06:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:28,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 20:06:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:06:28,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 20:06:28,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083306851] [2021-08-25 20:06:28,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083306851] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 20:06:28,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:06:28,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-08-25 20:06:28,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608578399] [2021-08-25 20:06:28,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-25 20:06:28,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 20:06:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-25 20:06:28,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-25 20:06:28,809 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-08-25 20:06:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:06:28,896 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2021-08-25 20:06:28,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-25 20:06:28,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) Word has length 25 [2021-08-25 20:06:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:06:28,898 INFO L225 Difference]: With dead ends: 159 [2021-08-25 20:06:28,898 INFO L226 Difference]: Without dead ends: 140 [2021-08-25 20:06:28,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 43.9ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-25 20:06:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-25 20:06:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2021-08-25 20:06:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.36) internal successors, (170), 129 states have internal predecessors, (170), 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) [2021-08-25 20:06:28,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2021-08-25 20:06:28,905 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2021-08-25 20:06:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:06:28,905 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2021-08-25 20:06:28,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-08-25 20:06:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2021-08-25 20:06:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-25 20:06:28,906 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:06:28,906 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:06:28,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:29,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:06:29,116 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-25 20:06:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:06:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash -390845998, now seen corresponding path program 1 times [2021-08-25 20:06:29,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 20:06:29,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427577143] [2021-08-25 20:06:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:06:29,118 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 20:06:29,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 20:06:29,118 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 20:06:29,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-25 20:06:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:06:29,300 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 20:06:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:06:29,364 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-25 20:06:29,365 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 20:06:29,365 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:29,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:29,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:29,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:29,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:29,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:29,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:06:29,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-25 20:06:29,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 20:06:29,573 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 20:06:29,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:06:29 BoogieIcfgContainer [2021-08-25 20:06:29,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 20:06:29,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 20:06:29,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 20:06:29,604 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 20:06:29,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:23" (3/4) ... [2021-08-25 20:06:29,606 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 20:06:29,723 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 20:06:29,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 20:06:29,725 INFO L168 Benchmark]: Toolchain (without parser) took 7503.41 ms. Allocated memory was 46.1 MB in the beginning and 157.3 MB in the end (delta: 111.1 MB). Free memory was 21.8 MB in the beginning and 103.5 MB in the end (delta: -81.7 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:29,725 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 46.1 MB. Free memory was 28.6 MB in the beginning and 28.6 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:06:29,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.67 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.6 MB in the beginning and 38.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:29,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.12 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 36.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:29,726 INFO L168 Benchmark]: Boogie Preprocessor took 54.72 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 34.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:29,726 INFO L168 Benchmark]: RCFGBuilder took 470.95 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 33.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:29,727 INFO L168 Benchmark]: TraceAbstraction took 6500.49 ms. Allocated memory was 56.6 MB in the beginning and 157.3 MB in the end (delta: 100.7 MB). Free memory was 33.0 MB in the beginning and 106.7 MB in the end (delta: -73.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:29,727 INFO L168 Benchmark]: Witness Printer took 119.75 ms. Allocated memory is still 157.3 MB. Free memory was 106.7 MB in the beginning and 103.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-25 20:06:29,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 46.1 MB. Free memory was 28.6 MB in the beginning and 28.6 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.67 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.6 MB in the beginning and 38.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.12 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 36.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.72 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 34.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 470.95 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 33.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6500.49 ms. Allocated memory was 56.6 MB in the beginning and 157.3 MB in the end (delta: 100.7 MB). Free memory was 33.0 MB in the beginning and 106.7 MB in the end (delta: -73.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. * Witness Printer took 119.75 ms. Allocated memory is still 157.3 MB. Free memory was 106.7 MB in the beginning and 103.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 6417.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 15.2ms, AutomataDifference: 1793.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 944 SDtfs, 1516 SDslu, 4241 SDs, 0 SdLazy, 821 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 717.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 861.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 92.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 102.6ms SsaConstructionTime, 207.7ms SatisfiabilityAnalysisTime, 1348.1ms InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 626 SizeOfPredicates, 44 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-25 20:06:29,761 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...