./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/scopes3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/scopes3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7efcb16e512d7de15a71f6cd895dcd8493c4b646 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:17:07,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:17:07,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:17:07,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:17:07,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:17:07,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:17:07,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:17:07,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:17:07,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:17:07,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:17:07,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:17:07,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:17:07,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:17:07,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:17:07,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:17:07,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:17:07,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:17:07,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:17:07,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:17:07,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:17:07,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:17:07,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:17:07,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:17:07,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:17:07,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:17:07,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:17:07,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:17:07,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:17:07,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:17:07,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:17:07,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:17:07,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:17:07,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:17:07,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:17:07,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:17:07,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:17:07,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:17:07,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:17:07,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:17:07,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:17:07,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:17:07,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:17:07,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:17:07,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:17:07,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:17:07,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:17:07,288 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:17:07,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:17:07,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:17:07,289 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:17:07,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:17:07,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:17:07,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:17:07,291 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:17:07,291 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:17:07,291 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:17:07,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:17:07,291 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:17:07,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:17:07,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:17:07,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:17:07,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:17:07,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:17:07,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:17:07,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:17:07,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:17:07,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:17:07,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:17:07,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:17:07,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:17:07,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 7efcb16e512d7de15a71f6cd895dcd8493c4b646 [2020-10-20 06:17:07,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:17:07,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:17:07,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:17:07,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:17:07,566 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:17:07,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes3.c [2020-10-20 06:17:07,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8b3966e/0fb0bcdeaf4c42db801f4bcbf8c970a2/FLAG02e43d935 [2020-10-20 06:17:08,046 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:17:08,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes3.c [2020-10-20 06:17:08,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8b3966e/0fb0bcdeaf4c42db801f4bcbf8c970a2/FLAG02e43d935 [2020-10-20 06:17:08,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8b3966e/0fb0bcdeaf4c42db801f4bcbf8c970a2 [2020-10-20 06:17:08,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:17:08,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:17:08,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:08,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:17:08,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:17:08,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:08" (1/1) ... [2020-10-20 06:17:08,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b085457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08, skipping insertion in model container [2020-10-20 06:17:08,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:08" (1/1) ... [2020-10-20 06:17:08,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:17:08,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:17:08,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:08,741 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:17:08,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:08,779 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:17:08,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08 WrapperNode [2020-10-20 06:17:08,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:08,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:17:08,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:17:08,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:17:08,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08" (1/1) ... [2020-10-20 06:17:08,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08" (1/1) ... [2020-10-20 06:17:08,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08" (1/1) ... [2020-10-20 06:17:08,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08" (1/1) ... [2020-10-20 06:17:08,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08" (1/1) ... [2020-10-20 06:17:08,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08" (1/1) ... [2020-10-20 06:17:08,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08" (1/1) ... [2020-10-20 06:17:08,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:17:08,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:17:08,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:17:08,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:17:08,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:17:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:17:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:17:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:17:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:17:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:17:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:17:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:17:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:17:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:17:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:17:09,112 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:17:09,113 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-20 06:17:09,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:09 BoogieIcfgContainer [2020-10-20 06:17:09,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:17:09,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:17:09,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:17:09,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:17:09,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:17:08" (1/3) ... [2020-10-20 06:17:09,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e87459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:09, skipping insertion in model container [2020-10-20 06:17:09,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:08" (2/3) ... [2020-10-20 06:17:09,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e87459c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:09, skipping insertion in model container [2020-10-20 06:17:09,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:09" (3/3) ... [2020-10-20 06:17:09,124 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes3.c [2020-10-20 06:17:09,137 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:17:09,145 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-20 06:17:09,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-20 06:17:09,196 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:17:09,197 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:17:09,197 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:17:09,198 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:17:09,198 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:17:09,198 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:17:09,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:17:09,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:17:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-20 06:17:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:17:09,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:09,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:09,237 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:09,250 INFO L82 PathProgramCache]: Analyzing trace with hash -197094901, now seen corresponding path program 1 times [2020-10-20 06:17:09,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:09,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256660536] [2020-10-20 06:17:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:09,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:09,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256660536] [2020-10-20 06:17:09,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:09,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:17:09,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052652545] [2020-10-20 06:17:09,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:17:09,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:09,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:17:09,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:17:09,482 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-10-20 06:17:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:09,584 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-20 06:17:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:17:09,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 06:17:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:09,596 INFO L225 Difference]: With dead ends: 26 [2020-10-20 06:17:09,596 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 06:17:09,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:17:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 06:17:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-10-20 06:17:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:17:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-20 06:17:09,632 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2020-10-20 06:17:09,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:09,633 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-20 06:17:09,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:17:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-20 06:17:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:17:09,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:09,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:09,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:17:09,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash -197095180, now seen corresponding path program 1 times [2020-10-20 06:17:09,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:09,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952124574] [2020-10-20 06:17:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:09,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952124574] [2020-10-20 06:17:09,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:09,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:17:09,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965714075] [2020-10-20 06:17:09,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:17:09,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:09,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:17:09,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:09,700 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2020-10-20 06:17:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:09,766 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-20 06:17:09,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:17:09,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:17:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:09,768 INFO L225 Difference]: With dead ends: 22 [2020-10-20 06:17:09,768 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 06:17:09,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:17:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 06:17:09,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-10-20 06:17:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:17:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-20 06:17:09,774 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2020-10-20 06:17:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:09,775 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-20 06:17:09,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-20 06:17:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:17:09,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:09,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:09,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:17:09,777 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:09,778 INFO L82 PathProgramCache]: Analyzing trace with hash -197095125, now seen corresponding path program 1 times [2020-10-20 06:17:09,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:09,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005707187] [2020-10-20 06:17:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:09,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:09,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005707187] [2020-10-20 06:17:09,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:09,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:17:09,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022040073] [2020-10-20 06:17:09,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:17:09,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:09,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:17:09,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:09,858 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2020-10-20 06:17:09,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:09,899 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-20 06:17:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:17:09,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:17:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:09,901 INFO L225 Difference]: With dead ends: 16 [2020-10-20 06:17:09,901 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 06:17:09,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 06:17:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 06:17:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 06:17:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-20 06:17:09,905 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2020-10-20 06:17:09,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:09,906 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-20 06:17:09,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:09,906 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-20 06:17:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:17:09,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:09,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:09,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:17:09,908 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:09,909 INFO L82 PathProgramCache]: Analyzing trace with hash -197095126, now seen corresponding path program 1 times [2020-10-20 06:17:09,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:09,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108775217] [2020-10-20 06:17:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:09,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108775217] [2020-10-20 06:17:09,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:09,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:17:09,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828531325] [2020-10-20 06:17:09,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:17:09,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:09,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:17:09,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:09,968 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2020-10-20 06:17:09,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:09,999 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-10-20 06:17:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:17:10,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:17:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:10,001 INFO L225 Difference]: With dead ends: 15 [2020-10-20 06:17:10,001 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 06:17:10,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:10,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 06:17:10,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 06:17:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 06:17:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-20 06:17:10,006 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-10-20 06:17:10,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:10,006 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-20 06:17:10,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-20 06:17:10,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:17:10,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:10,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:10,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:17:10,009 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:10,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:10,009 INFO L82 PathProgramCache]: Analyzing trace with hash -440617163, now seen corresponding path program 1 times [2020-10-20 06:17:10,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:10,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718943034] [2020-10-20 06:17:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:10,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:10,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718943034] [2020-10-20 06:17:10,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448354528] [2020-10-20 06:17:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:10,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:17:10,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:10,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:10,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-20 06:17:10,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200468398] [2020-10-20 06:17:10,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:17:10,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:10,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:17:10,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:17:10,203 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2020-10-20 06:17:10,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:10,251 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-20 06:17:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:17:10,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 06:17:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:10,253 INFO L225 Difference]: With dead ends: 20 [2020-10-20 06:17:10,253 INFO L226 Difference]: Without dead ends: 20 [2020-10-20 06:17:10,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:17:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-20 06:17:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-10-20 06:17:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:17:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-20 06:17:10,258 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-10-20 06:17:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:10,259 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-20 06:17:10,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:17:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-20 06:17:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:17:10,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:10,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:10,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:10,472 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:10,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:10,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1004249772, now seen corresponding path program 2 times [2020-10-20 06:17:10,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:10,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642354494] [2020-10-20 06:17:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:10,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642354494] [2020-10-20 06:17:10,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338019879] [2020-10-20 06:17:10,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:10,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:17:10,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:10,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:17:10,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:10,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:10,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-20 06:17:10,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322799413] [2020-10-20 06:17:10,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:17:10,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:10,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:17:10,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:17:10,630 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2020-10-20 06:17:10,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:10,693 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-20 06:17:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:17:10,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-20 06:17:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:10,695 INFO L225 Difference]: With dead ends: 23 [2020-10-20 06:17:10,695 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 06:17:10,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:17:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 06:17:10,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-10-20 06:17:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:17:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-20 06:17:10,699 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2020-10-20 06:17:10,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:10,699 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-20 06:17:10,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:17:10,700 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-20 06:17:10,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:17:10,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:10,701 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:10,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:10,902 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:10,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:10,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1138822869, now seen corresponding path program 3 times [2020-10-20 06:17:10,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:10,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555466728] [2020-10-20 06:17:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:11,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555466728] [2020-10-20 06:17:11,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50922274] [2020-10-20 06:17:11,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:11,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-20 06:17:11,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:11,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:17:11,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:11,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:11,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-10-20 06:17:11,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386666503] [2020-10-20 06:17:11,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:17:11,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:11,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:17:11,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:17:11,129 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-10-20 06:17:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:11,186 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-20 06:17:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:17:11,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-20 06:17:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:11,187 INFO L225 Difference]: With dead ends: 26 [2020-10-20 06:17:11,187 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 06:17:11,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:17:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 06:17:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-20 06:17:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 06:17:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-10-20 06:17:11,192 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2020-10-20 06:17:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:11,192 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-10-20 06:17:11,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:17:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-10-20 06:17:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:17:11,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:11,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:11,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:11,405 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:11,406 INFO L82 PathProgramCache]: Analyzing trace with hash 727015860, now seen corresponding path program 4 times [2020-10-20 06:17:11,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:11,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421257234] [2020-10-20 06:17:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:11,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421257234] [2020-10-20 06:17:11,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063897673] [2020-10-20 06:17:11,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:11,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:17:11,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:11,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:17:11,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:11,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:11,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-20 06:17:11,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200310917] [2020-10-20 06:17:11,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:17:11,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:11,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:17:11,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:17:11,562 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2020-10-20 06:17:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:11,626 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-20 06:17:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:17:11,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-20 06:17:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:11,627 INFO L225 Difference]: With dead ends: 29 [2020-10-20 06:17:11,627 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 06:17:11,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:17:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 06:17:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-20 06:17:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:17:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-20 06:17:11,631 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2020-10-20 06:17:11,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:11,632 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-20 06:17:11,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:17:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-20 06:17:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:17:11,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:11,633 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:11,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:11,842 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:11,843 INFO L82 PathProgramCache]: Analyzing trace with hash -988991883, now seen corresponding path program 5 times [2020-10-20 06:17:11,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:11,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380915276] [2020-10-20 06:17:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:11,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380915276] [2020-10-20 06:17:11,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220924331] [2020-10-20 06:17:11,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:12,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 06:17:12,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:12,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:17:12,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:12,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:12,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-10-20 06:17:12,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644606906] [2020-10-20 06:17:12,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:17:12,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:12,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:17:12,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:17:12,050 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-10-20 06:17:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:12,112 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-10-20 06:17:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:17:12,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-20 06:17:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:12,113 INFO L225 Difference]: With dead ends: 32 [2020-10-20 06:17:12,113 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 06:17:12,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:17:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 06:17:12,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-20 06:17:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:17:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-10-20 06:17:12,117 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2020-10-20 06:17:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:12,118 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-10-20 06:17:12,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:17:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-10-20 06:17:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:17:12,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:12,119 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:12,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:12,330 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:12,330 INFO L82 PathProgramCache]: Analyzing trace with hash 420060692, now seen corresponding path program 6 times [2020-10-20 06:17:12,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:12,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973884919] [2020-10-20 06:17:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:12,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973884919] [2020-10-20 06:17:12,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533206897] [2020-10-20 06:17:12,430 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:12,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-20 06:17:12,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:12,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:17:12,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:12,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:12,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2020-10-20 06:17:12,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030102231] [2020-10-20 06:17:12,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:17:12,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:12,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:17:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:17:12,559 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2020-10-20 06:17:12,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:12,620 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-10-20 06:17:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:17:12,621 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-20 06:17:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:12,622 INFO L225 Difference]: With dead ends: 35 [2020-10-20 06:17:12,622 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 06:17:12,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:17:12,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 06:17:12,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-20 06:17:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 06:17:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-10-20 06:17:12,626 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 26 [2020-10-20 06:17:12,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:12,627 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-10-20 06:17:12,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:17:12,627 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-10-20 06:17:12,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:17:12,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:12,628 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:12,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:12,840 INFO L429 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:12,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:12,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1505028587, now seen corresponding path program 7 times [2020-10-20 06:17:12,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:12,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983026211] [2020-10-20 06:17:12,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:12,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983026211] [2020-10-20 06:17:12,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2628358] [2020-10-20 06:17:12,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:13,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:17:13,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:13,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:13,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2020-10-20 06:17:13,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438633251] [2020-10-20 06:17:13,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:17:13,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:13,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:17:13,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:17:13,043 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 12 states. [2020-10-20 06:17:13,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:13,104 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-10-20 06:17:13,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:17:13,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-10-20 06:17:13,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:13,106 INFO L225 Difference]: With dead ends: 38 [2020-10-20 06:17:13,106 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 06:17:13,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:17:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 06:17:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-20 06:17:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 06:17:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-10-20 06:17:13,111 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 29 [2020-10-20 06:17:13,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:13,112 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-10-20 06:17:13,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:17:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-10-20 06:17:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 06:17:13,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:13,113 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:13,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:13,325 INFO L429 AbstractCegarLoop]: === Iteration 12 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:13,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1141435788, now seen corresponding path program 8 times [2020-10-20 06:17:13,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:13,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208681721] [2020-10-20 06:17:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:13,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208681721] [2020-10-20 06:17:13,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933509595] [2020-10-20 06:17:13,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:13,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:17:13,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:13,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:17:13,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:13,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:13,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2020-10-20 06:17:13,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320623217] [2020-10-20 06:17:13,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:17:13,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:13,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:17:13,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:17:13,590 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 13 states. [2020-10-20 06:17:13,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:13,679 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-10-20 06:17:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:17:13,679 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-20 06:17:13,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:13,680 INFO L225 Difference]: With dead ends: 41 [2020-10-20 06:17:13,680 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 06:17:13,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:17:13,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 06:17:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-20 06:17:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 06:17:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-20 06:17:13,685 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 32 [2020-10-20 06:17:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:13,686 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-20 06:17:13,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:17:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-20 06:17:13,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-20 06:17:13,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:13,687 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:13,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 06:17:13,888 INFO L429 AbstractCegarLoop]: === Iteration 13 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1255881291, now seen corresponding path program 9 times [2020-10-20 06:17:13,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:13,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798290532] [2020-10-20 06:17:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:14,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:14,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798290532] [2020-10-20 06:17:14,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161138165] [2020-10-20 06:17:14,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:14,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-20 06:17:14,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:14,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:17:14,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:14,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:14,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2020-10-20 06:17:14,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030522148] [2020-10-20 06:17:14,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:17:14,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:14,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:17:14,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:17:14,206 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 14 states. [2020-10-20 06:17:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:14,273 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-10-20 06:17:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:17:14,273 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-20 06:17:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:14,274 INFO L225 Difference]: With dead ends: 42 [2020-10-20 06:17:14,274 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 06:17:14,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:17:14,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 06:17:14,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-20 06:17:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 06:17:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-10-20 06:17:14,279 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2020-10-20 06:17:14,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:14,279 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-10-20 06:17:14,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:17:14,279 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-10-20 06:17:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-20 06:17:14,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:14,281 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:14,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:14,491 INFO L429 AbstractCegarLoop]: === Iteration 14 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:14,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:14,492 INFO L82 PathProgramCache]: Analyzing trace with hash -497828140, now seen corresponding path program 10 times [2020-10-20 06:17:14,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:14,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678518864] [2020-10-20 06:17:14,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:17:14,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:17:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:17:14,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:17:14,611 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:17:14,611 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:17:14,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 06:17:14,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:17:14 BoogieIcfgContainer [2020-10-20 06:17:14,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:17:14,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:17:14,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:17:14,649 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:17:14,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:09" (3/4) ... [2020-10-20 06:17:14,652 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:17:14,724 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:17:14,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:17:14,727 INFO L168 Benchmark]: Toolchain (without parser) took 6305.02 ms. Allocated memory was 36.7 MB in the beginning and 60.8 MB in the end (delta: 24.1 MB). Free memory was 17.5 MB in the beginning and 31.2 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:14,728 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 10.0 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:17:14,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.04 ms. Allocated memory was 36.7 MB in the beginning and 43.5 MB in the end (delta: 6.8 MB). Free memory was 16.5 MB in the beginning and 25.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:14,729 INFO L168 Benchmark]: Boogie Preprocessor took 48.40 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 24.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:14,730 INFO L168 Benchmark]: RCFGBuilder took 284.93 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 23.9 MB in the beginning and 24.6 MB in the end (delta: -724.1 kB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:14,730 INFO L168 Benchmark]: TraceAbstraction took 5531.78 ms. Allocated memory was 45.6 MB in the beginning and 60.8 MB in the end (delta: 15.2 MB). Free memory was 24.1 MB in the beginning and 34.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:14,731 INFO L168 Benchmark]: Witness Printer took 76.12 ms. Allocated memory is still 60.8 MB. Free memory was 34.5 MB in the beginning and 31.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:14,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 10.0 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 352.04 ms. Allocated memory was 36.7 MB in the beginning and 43.5 MB in the end (delta: 6.8 MB). Free memory was 16.5 MB in the beginning and 25.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 48.40 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 24.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 284.93 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 23.9 MB in the beginning and 24.6 MB in the end (delta: -724.1 kB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5531.78 ms. Allocated memory was 45.6 MB in the beginning and 60.8 MB in the end (delta: 15.2 MB). Free memory was 24.1 MB in the beginning and 34.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. * Witness Printer took 76.12 ms. Allocated memory is still 60.8 MB. Free memory was 34.5 MB in the beginning and 31.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; VAL [i=0] [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={3:0}, i=0, p={3:0}] [L6] p[0] = 1 VAL [a={3:0}, i=0, p={3:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={4:0}, i=1, p={4:0}] [L6] p[0] = 1 VAL [a={4:0}, i=1, p={4:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={5:0}, i=2, p={5:0}] [L6] p[0] = 1 VAL [a={5:0}, i=2, p={5:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={6:0}, i=3, p={6:0}] [L6] p[0] = 1 VAL [a={6:0}, i=3, p={6:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={7:0}, i=4, p={7:0}] [L6] p[0] = 1 VAL [a={7:0}, i=4, p={7:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={8:0}, i=5, p={8:0}] [L6] p[0] = 1 VAL [a={8:0}, i=5, p={8:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={9:0}, i=6, p={9:0}] [L6] p[0] = 1 VAL [a={9:0}, i=6, p={9:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={10:0}, i=7, p={10:0}] [L6] p[0] = 1 VAL [a={10:0}, i=7, p={10:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={11:0}, i=8, p={11:0}] [L6] p[0] = 1 VAL [a={11:0}, i=8, p={11:0}] [L3] i++ [L3] COND TRUE i < 10 [L4] int a[10]; [L5] p = a VAL [a={2:0}, i=9, p={2:0}] [L6] p[0] = 1 VAL [a={2:0}, i=9, p={2:0}] [L3] i++ [L3] COND FALSE !(i < 10) VAL [i=10, p={2:0}] [L8] p[0] = 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 132 SDslu, 533 SDs, 0 SdLazy, 398 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 22 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 484 NumberOfCodeBlocks, 480 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 26952 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1181 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 0/810 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! Received shutdown request...