./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/verifythis/elimination_max.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/verifythis/elimination_max.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 b909735efeb9bc00b7df4035956af92a753b9076 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:52:23,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:52:23,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:52:23,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:52:23,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:52:23,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:52:23,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:52:23,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:52:23,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:52:23,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:52:23,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:52:23,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:52:23,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:52:23,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:52:23,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:52:23,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:52:23,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:52:23,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:52:23,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:52:23,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:52:23,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:52:23,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:52:23,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:52:23,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:52:23,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:52:23,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:52:23,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:52:23,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:52:23,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:52:23,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:52:23,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:52:23,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:52:23,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:52:23,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:52:23,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:52:23,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:52:23,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:52:23,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:52:23,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:52:23,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:52:23,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:52:23,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:52:23,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:52:23,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:52:23,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:52:23,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:52:23,419 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:52:23,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:52:23,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:52:23,419 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:52:23,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:52:23,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:52:23,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:52:23,420 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:52:23,421 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:52:23,421 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:52:23,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:52:23,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:52:23,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:52:23,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:52:23,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:52:23,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:52:23,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:52:23,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:52:23,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:52:23,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:52:23,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:52:23,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:52:23,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:52:23,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:52:23,425 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 -> b909735efeb9bc00b7df4035956af92a753b9076 [2020-10-20 05:52:23,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:52:23,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:52:23,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:52:23,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:52:23,655 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:52:23,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max.c [2020-10-20 05:52:23,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d0acdca/246f3f2c56e04835b655221558bb51e7/FLAG833f240b5 [2020-10-20 05:52:24,235 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:52:24,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max.c [2020-10-20 05:52:24,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d0acdca/246f3f2c56e04835b655221558bb51e7/FLAG833f240b5 [2020-10-20 05:52:24,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d0acdca/246f3f2c56e04835b655221558bb51e7 [2020-10-20 05:52:24,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:52:24,662 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:52:24,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:52:24,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:52:24,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:52:24,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:52:24" (1/1) ... [2020-10-20 05:52:24,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fbcb5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:24, skipping insertion in model container [2020-10-20 05:52:24,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:52:24" (1/1) ... [2020-10-20 05:52:24,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:52:24,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:52:24,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:52:24,991 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:52:25,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:52:25,027 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:52:25,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25 WrapperNode [2020-10-20 05:52:25,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:52:25,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:52:25,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:52:25,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:52:25,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25" (1/1) ... [2020-10-20 05:52:25,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25" (1/1) ... [2020-10-20 05:52:25,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25" (1/1) ... [2020-10-20 05:52:25,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25" (1/1) ... [2020-10-20 05:52:25,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25" (1/1) ... [2020-10-20 05:52:25,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25" (1/1) ... [2020-10-20 05:52:25,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25" (1/1) ... [2020-10-20 05:52:25,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:52:25,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:52:25,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:52:25,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:52:25,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25" (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 05:52:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:52:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:52:25,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 05:52:25,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-20 05:52:25,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-20 05:52:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:52:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-20 05:52:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:52:25,141 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:52:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:52:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 05:52:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 05:52:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:52:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-20 05:52:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-20 05:52:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:52:25,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:52:25,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 05:52:25,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-20 05:52:25,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:52:25,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:52:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:52:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 05:52:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:52:25,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:52:25,577 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:52:25,578 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 05:52:25,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:52:25 BoogieIcfgContainer [2020-10-20 05:52:25,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:52:25,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:52:25,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:52:25,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:52:25,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:52:24" (1/3) ... [2020-10-20 05:52:25,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a6567e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:52:25, skipping insertion in model container [2020-10-20 05:52:25,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:52:25" (2/3) ... [2020-10-20 05:52:25,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a6567e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:52:25, skipping insertion in model container [2020-10-20 05:52:25,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:52:25" (3/3) ... [2020-10-20 05:52:25,590 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2020-10-20 05:52:25,602 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:52:25,610 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-20 05:52:25,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-20 05:52:25,648 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:52:25,648 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:52:25,649 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:52:25,649 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:52:25,649 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:52:25,649 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:52:25,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:52:25,650 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:52:25,667 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-20 05:52:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:52:25,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:25,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:25,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:25,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1105579330, now seen corresponding path program 1 times [2020-10-20 05:52:25,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:25,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608958443] [2020-10-20 05:52:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:25,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:25,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:25,956 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 05:52:25,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608958443] [2020-10-20 05:52:25,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:25,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:52:25,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352566894] [2020-10-20 05:52:25,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:52:25,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:25,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:52:25,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:52:25,990 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-10-20 05:52:26,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:26,223 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-10-20 05:52:26,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:52:26,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-20 05:52:26,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:26,236 INFO L225 Difference]: With dead ends: 63 [2020-10-20 05:52:26,237 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 05:52:26,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 05:52:26,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 05:52:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-20 05:52:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-20 05:52:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-20 05:52:26,288 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 19 [2020-10-20 05:52:26,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:26,289 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-20 05:52:26,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:52:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-20 05:52:26,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:52:26,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:26,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:26,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:52:26,292 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:26,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:26,293 INFO L82 PathProgramCache]: Analyzing trace with hash -404514752, now seen corresponding path program 1 times [2020-10-20 05:52:26,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:26,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968519554] [2020-10-20 05:52:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:26,446 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 05:52:26,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968519554] [2020-10-20 05:52:26,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:26,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:52:26,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030062923] [2020-10-20 05:52:26,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:52:26,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:26,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:52:26,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:52:26,451 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 6 states. [2020-10-20 05:52:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:26,718 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-20 05:52:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:52:26,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-20 05:52:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:26,721 INFO L225 Difference]: With dead ends: 53 [2020-10-20 05:52:26,721 INFO L226 Difference]: Without dead ends: 53 [2020-10-20 05:52:26,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:52:26,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-20 05:52:26,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-20 05:52:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 05:52:26,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-20 05:52:26,732 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 19 [2020-10-20 05:52:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:26,734 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-20 05:52:26,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:52:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-20 05:52:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:52:26,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:26,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:26,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:52:26,737 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:26,737 INFO L82 PathProgramCache]: Analyzing trace with hash -404514751, now seen corresponding path program 1 times [2020-10-20 05:52:26,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:26,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869607570] [2020-10-20 05:52:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:26,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:26,924 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 05:52:26,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869607570] [2020-10-20 05:52:26,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:26,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:52:26,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845638120] [2020-10-20 05:52:26,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:52:26,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:26,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:52:26,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:52:26,927 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-20 05:52:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:27,406 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2020-10-20 05:52:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:52:27,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 05:52:27,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:27,409 INFO L225 Difference]: With dead ends: 101 [2020-10-20 05:52:27,409 INFO L226 Difference]: Without dead ends: 101 [2020-10-20 05:52:27,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:52:27,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-20 05:52:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2020-10-20 05:52:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-20 05:52:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2020-10-20 05:52:27,422 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 19 [2020-10-20 05:52:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:27,423 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2020-10-20 05:52:27,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:52:27,423 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2020-10-20 05:52:27,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:52:27,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:27,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:27,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:52:27,425 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:27,426 INFO L82 PathProgramCache]: Analyzing trace with hash 344944575, now seen corresponding path program 1 times [2020-10-20 05:52:27,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:27,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087350572] [2020-10-20 05:52:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:27,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:27,606 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 05:52:27,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087350572] [2020-10-20 05:52:27,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:27,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:52:27,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226267868] [2020-10-20 05:52:27,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:52:27,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:27,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:52:27,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:52:27,611 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand 7 states. [2020-10-20 05:52:28,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:28,128 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2020-10-20 05:52:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:52:28,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-20 05:52:28,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:28,131 INFO L225 Difference]: With dead ends: 119 [2020-10-20 05:52:28,131 INFO L226 Difference]: Without dead ends: 119 [2020-10-20 05:52:28,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:52:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-20 05:52:28,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 87. [2020-10-20 05:52:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-20 05:52:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2020-10-20 05:52:28,142 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 20 [2020-10-20 05:52:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:28,143 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2020-10-20 05:52:28,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:52:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2020-10-20 05:52:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 05:52:28,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:28,144 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:28,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:52:28,145 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:28,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:28,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1612932601, now seen corresponding path program 1 times [2020-10-20 05:52:28,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:28,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941315664] [2020-10-20 05:52:28,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:28,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941315664] [2020-10-20 05:52:28,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751570375] [2020-10-20 05:52:28,283 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 05:52:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:28,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:52:28,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:28,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:52:28,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2020-10-20 05:52:28,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411818257] [2020-10-20 05:52:28,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:52:28,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:28,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:52:28,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:52:28,511 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand 7 states. [2020-10-20 05:52:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:28,823 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2020-10-20 05:52:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:52:28,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-20 05:52:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:28,827 INFO L225 Difference]: With dead ends: 140 [2020-10-20 05:52:28,827 INFO L226 Difference]: Without dead ends: 140 [2020-10-20 05:52:28,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-20 05:52:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-20 05:52:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-20 05:52:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-20 05:52:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2020-10-20 05:52:28,853 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 23 [2020-10-20 05:52:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:28,854 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2020-10-20 05:52:28,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:52:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2020-10-20 05:52:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 05:52:28,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:28,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:29,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:29,060 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash -569899624, now seen corresponding path program 1 times [2020-10-20 05:52:29,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:29,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351705004] [2020-10-20 05:52:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 05:52:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:52:29,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351705004] [2020-10-20 05:52:29,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:29,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 05:52:29,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045892371] [2020-10-20 05:52:29,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:52:29,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:29,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:52:29,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:52:29,260 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 9 states. [2020-10-20 05:52:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:29,688 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2020-10-20 05:52:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 05:52:29,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-20 05:52:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:29,691 INFO L225 Difference]: With dead ends: 105 [2020-10-20 05:52:29,691 INFO L226 Difference]: Without dead ends: 105 [2020-10-20 05:52:29,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:52:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-20 05:52:29,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 76. [2020-10-20 05:52:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 05:52:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2020-10-20 05:52:29,700 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 25 [2020-10-20 05:52:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:29,701 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2020-10-20 05:52:29,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:52:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2020-10-20 05:52:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 05:52:29,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:29,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:29,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:52:29,705 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:29,706 INFO L82 PathProgramCache]: Analyzing trace with hash -487019175, now seen corresponding path program 1 times [2020-10-20 05:52:29,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:29,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200341819] [2020-10-20 05:52:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 05:52:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 05:52:29,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200341819] [2020-10-20 05:52:29,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:29,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:52:29,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111531277] [2020-10-20 05:52:29,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:52:29,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:29,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:52:29,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:52:29,808 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand 7 states. [2020-10-20 05:52:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:30,066 INFO L93 Difference]: Finished difference Result 112 states and 135 transitions. [2020-10-20 05:52:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:52:30,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-20 05:52:30,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:30,068 INFO L225 Difference]: With dead ends: 112 [2020-10-20 05:52:30,068 INFO L226 Difference]: Without dead ends: 112 [2020-10-20 05:52:30,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:52:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-20 05:52:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2020-10-20 05:52:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-20 05:52:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-10-20 05:52:30,078 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 26 [2020-10-20 05:52:30,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:30,079 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-10-20 05:52:30,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:52:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-10-20 05:52:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 05:52:30,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:30,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:30,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 05:52:30,081 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:30,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:30,081 INFO L82 PathProgramCache]: Analyzing trace with hash 145092996, now seen corresponding path program 1 times [2020-10-20 05:52:30,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:30,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918379148] [2020-10-20 05:52:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 05:52:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 05:52:30,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918379148] [2020-10-20 05:52:30,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:30,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-20 05:52:30,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927667374] [2020-10-20 05:52:30,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 05:52:30,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:30,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 05:52:30,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:52:30,226 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 11 states. [2020-10-20 05:52:30,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:30,663 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2020-10-20 05:52:30,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:52:30,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-20 05:52:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:30,665 INFO L225 Difference]: With dead ends: 79 [2020-10-20 05:52:30,666 INFO L226 Difference]: Without dead ends: 79 [2020-10-20 05:52:30,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:52:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-20 05:52:30,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-20 05:52:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-20 05:52:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2020-10-20 05:52:30,677 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 31 [2020-10-20 05:52:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:30,678 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2020-10-20 05:52:30,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 05:52:30,678 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2020-10-20 05:52:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 05:52:30,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:30,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:30,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 05:52:30,680 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:30,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1105806991, now seen corresponding path program 1 times [2020-10-20 05:52:30,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:30,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388860373] [2020-10-20 05:52:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 05:52:30,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388860373] [2020-10-20 05:52:30,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251197413] [2020-10-20 05:52:30,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:52:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:30,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:52:30,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:30,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:30,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2020-10-20 05:52:30,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464550962] [2020-10-20 05:52:30,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 05:52:30,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:30,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 05:52:30,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:52:30,974 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand 15 states. [2020-10-20 05:52:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:31,641 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2020-10-20 05:52:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 05:52:31,642 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-10-20 05:52:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:31,643 INFO L225 Difference]: With dead ends: 80 [2020-10-20 05:52:31,643 INFO L226 Difference]: Without dead ends: 80 [2020-10-20 05:52:31,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2020-10-20 05:52:31,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-20 05:52:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2020-10-20 05:52:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 05:52:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-20 05:52:31,649 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 28 [2020-10-20 05:52:31,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:31,649 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-20 05:52:31,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 05:52:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-20 05:52:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 05:52:31,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:31,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:31,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:31,863 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:31,864 INFO L82 PathProgramCache]: Analyzing trace with hash 708133075, now seen corresponding path program 1 times [2020-10-20 05:52:31,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:31,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186801281] [2020-10-20 05:52:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:31,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 05:52:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 05:52:32,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186801281] [2020-10-20 05:52:32,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131111953] [2020-10-20 05:52:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:52:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:32,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:52:32,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:32,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:52:32,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2020-10-20 05:52:32,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773945438] [2020-10-20 05:52:32,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:52:32,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:32,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:52:32,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:52:32,314 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 8 states. [2020-10-20 05:52:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:32,633 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2020-10-20 05:52:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:52:32,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-20 05:52:32,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:32,635 INFO L225 Difference]: With dead ends: 93 [2020-10-20 05:52:32,635 INFO L226 Difference]: Without dead ends: 93 [2020-10-20 05:52:32,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-10-20 05:52:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-20 05:52:32,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 60. [2020-10-20 05:52:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-20 05:52:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-20 05:52:32,642 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 30 [2020-10-20 05:52:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:32,644 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-20 05:52:32,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:52:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-20 05:52:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-20 05:52:32,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:32,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:32,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-20 05:52:32,862 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:32,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:32,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1809388562, now seen corresponding path program 1 times [2020-10-20 05:52:32,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:32,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264880074] [2020-10-20 05:52:32,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:32,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 05:52:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 05:52:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 05:52:33,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264880074] [2020-10-20 05:52:33,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:33,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-20 05:52:33,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564168343] [2020-10-20 05:52:33,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 05:52:33,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:33,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 05:52:33,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:52:33,043 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 11 states. [2020-10-20 05:52:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:33,502 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-20 05:52:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:52:33,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-20 05:52:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:33,506 INFO L225 Difference]: With dead ends: 57 [2020-10-20 05:52:33,506 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 05:52:33,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:52:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 05:52:33,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-20 05:52:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 05:52:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-20 05:52:33,511 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 40 [2020-10-20 05:52:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:33,511 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-20 05:52:33,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 05:52:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-20 05:52:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-20 05:52:33,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:33,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:33,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 05:52:33,513 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:33,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:33,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1364625355, now seen corresponding path program 1 times [2020-10-20 05:52:33,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:33,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560772990] [2020-10-20 05:52:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 05:52:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 05:52:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-20 05:52:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 05:52:33,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560772990] [2020-10-20 05:52:33,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666115685] [2020-10-20 05:52:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:52:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:33,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:52:33,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 05:52:33,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:52:33,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2020-10-20 05:52:33,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660807285] [2020-10-20 05:52:33,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:52:33,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:33,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:52:33,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:52:33,751 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 6 states. [2020-10-20 05:52:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:33,855 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2020-10-20 05:52:33,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:52:33,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-20 05:52:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:33,856 INFO L225 Difference]: With dead ends: 77 [2020-10-20 05:52:33,856 INFO L226 Difference]: Without dead ends: 77 [2020-10-20 05:52:33,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:52:33,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-20 05:52:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2020-10-20 05:52:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 05:52:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2020-10-20 05:52:33,861 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 44 [2020-10-20 05:52:33,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:33,861 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2020-10-20 05:52:33,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:52:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2020-10-20 05:52:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-20 05:52:33,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:33,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:34,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:34,073 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:34,074 INFO L82 PathProgramCache]: Analyzing trace with hash 646285478, now seen corresponding path program 1 times [2020-10-20 05:52:34,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:34,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956289564] [2020-10-20 05:52:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 05:52:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 05:52:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-20 05:52:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 05:52:34,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956289564] [2020-10-20 05:52:34,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:34,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:52:34,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953597869] [2020-10-20 05:52:34,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:52:34,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:34,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:52:34,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:52:34,201 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 6 states. [2020-10-20 05:52:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:34,376 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-20 05:52:34,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:52:34,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-20 05:52:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:34,378 INFO L225 Difference]: With dead ends: 67 [2020-10-20 05:52:34,378 INFO L226 Difference]: Without dead ends: 67 [2020-10-20 05:52:34,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:52:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-20 05:52:34,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-20 05:52:34,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-20 05:52:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-10-20 05:52:34,382 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 45 [2020-10-20 05:52:34,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:34,383 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-10-20 05:52:34,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:52:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-10-20 05:52:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-20 05:52:34,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:34,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:34,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 05:52:34,384 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:34,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:34,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1689910167, now seen corresponding path program 1 times [2020-10-20 05:52:34,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:34,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358929401] [2020-10-20 05:52:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-20 05:52:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-20 05:52:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-20 05:52:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 05:52:34,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358929401] [2020-10-20 05:52:34,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:34,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:52:34,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590040356] [2020-10-20 05:52:34,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:52:34,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:34,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:52:34,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:52:34,551 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-10-20 05:52:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:34,751 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-10-20 05:52:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:52:34,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-20 05:52:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:34,753 INFO L225 Difference]: With dead ends: 66 [2020-10-20 05:52:34,753 INFO L226 Difference]: Without dead ends: 45 [2020-10-20 05:52:34,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:52:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-20 05:52:34,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-20 05:52:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 05:52:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-20 05:52:34,757 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 47 [2020-10-20 05:52:34,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:34,757 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-20 05:52:34,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:52:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-20 05:52:34,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-20 05:52:34,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:34,758 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:34,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 05:52:34,759 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:34,759 INFO L82 PathProgramCache]: Analyzing trace with hash -130424529, now seen corresponding path program 1 times [2020-10-20 05:52:34,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:34,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289615441] [2020-10-20 05:52:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 05:52:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-20 05:52:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-20 05:52:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 05:52:34,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289615441] [2020-10-20 05:52:34,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919729788] [2020-10-20 05:52:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:52:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:34,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 05:52:34,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 05:52:35,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:35,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2020-10-20 05:52:35,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717626749] [2020-10-20 05:52:35,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-20 05:52:35,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:35,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-20 05:52:35,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-20 05:52:35,330 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2020-10-20 05:52:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:35,918 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-10-20 05:52:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 05:52:35,918 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-10-20 05:52:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:35,920 INFO L225 Difference]: With dead ends: 58 [2020-10-20 05:52:35,920 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 05:52:35,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2020-10-20 05:52:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 05:52:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-10-20 05:52:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 05:52:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-10-20 05:52:35,923 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 48 [2020-10-20 05:52:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:35,924 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-10-20 05:52:35,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-20 05:52:35,924 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-10-20 05:52:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-20 05:52:35,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:35,925 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:36,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 05:52:36,132 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:36,133 INFO L82 PathProgramCache]: Analyzing trace with hash -337131664, now seen corresponding path program 2 times [2020-10-20 05:52:36,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:36,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624931484] [2020-10-20 05:52:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:36,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:36,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:36,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 05:52:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-20 05:52:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-20 05:52:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:36,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-20 05:52:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-20 05:52:36,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624931484] [2020-10-20 05:52:36,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788980576] [2020-10-20 05:52:36,302 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 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 05:52:36,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:52:36,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:36,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:52:36,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-20 05:52:36,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:36,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2020-10-20 05:52:36,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191204675] [2020-10-20 05:52:36,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 05:52:36,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:36,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 05:52:36,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:52:36,485 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 15 states. [2020-10-20 05:52:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:36,819 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-10-20 05:52:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 05:52:36,819 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-10-20 05:52:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:36,820 INFO L225 Difference]: With dead ends: 77 [2020-10-20 05:52:36,820 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 05:52:36,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-10-20 05:52:36,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 05:52:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-10-20 05:52:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 05:52:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-10-20 05:52:36,823 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 58 [2020-10-20 05:52:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:36,824 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-10-20 05:52:36,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 05:52:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-10-20 05:52:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-20 05:52:36,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:36,825 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:37,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:37,033 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr15ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:37,034 INFO L82 PathProgramCache]: Analyzing trace with hash 484963050, now seen corresponding path program 3 times [2020-10-20 05:52:37,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:52:37,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745114469] [2020-10-20 05:52:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:52:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:52:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:37,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 05:52:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:37,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 05:52:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-20 05:52:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:37,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 05:52:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:37,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-20 05:52:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-20 05:52:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-20 05:52:37,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745114469] [2020-10-20 05:52:37,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509692972] [2020-10-20 05:52:37,241 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 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 05:52:37,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 05:52:37,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:37,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:52:37,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:38,338 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0.base_BEFORE_CALL_7 Int) (aux_div_v_main_~a~0.offset_BEFORE_CALL_7_110 Int) (v_main_~i~0_BEFORE_CALL_5 Int)) (<= (+ (* 4 aux_div_v_main_~a~0.offset_BEFORE_CALL_7_110) 4) (+ (select |c_#length| v_main_~a~0.base_BEFORE_CALL_7) (* 4 v_main_~i~0_BEFORE_CALL_5)))) is different from true [2020-10-20 05:52:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-20 05:52:38,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:38,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2020-10-20 05:52:38,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046050846] [2020-10-20 05:52:38,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 05:52:38,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:52:38,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 05:52:38,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=265, Unknown=1, NotChecked=32, Total=342 [2020-10-20 05:52:38,495 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 19 states. [2020-10-20 05:52:41,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:41,562 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-10-20 05:52:41,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 05:52:41,563 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-20 05:52:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:41,564 INFO L225 Difference]: With dead ends: 64 [2020-10-20 05:52:41,564 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 05:52:41,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=186, Invalid=808, Unknown=2, NotChecked=60, Total=1056 [2020-10-20 05:52:41,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 05:52:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 05:52:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 05:52:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 05:52:41,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-10-20 05:52:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:41,567 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 05:52:41,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 05:52:41,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 05:52:41,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 05:52:41,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 05:52:41,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:52:41 BoogieIcfgContainer [2020-10-20 05:52:41,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:52:41,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:52:41,780 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:52:41,780 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:52:41,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:52:25" (3/4) ... [2020-10-20 05:52:41,784 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 05:52:41,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-10-20 05:52:41,791 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 05:52:41,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2020-10-20 05:52:41,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 05:52:41,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2020-10-20 05:52:41,792 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2020-10-20 05:52:41,800 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-10-20 05:52:41,801 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 05:52:41,801 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 05:52:41,801 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:52:41,857 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:52:41,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:52:41,860 INFO L168 Benchmark]: Toolchain (without parser) took 17201.92 ms. Allocated memory was 37.2 MB in the beginning and 99.6 MB in the end (delta: 62.4 MB). Free memory was 18.8 MB in the beginning and 78.5 MB in the end (delta: -59.7 MB). Peak memory consumption was 74.2 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:41,861 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 34.1 MB. Free memory was 10.8 MB in the beginning and 10.8 MB in the end (delta: 68.4 kB). Peak memory consumption was 68.4 kB. Max. memory is 14.3 GB. [2020-10-20 05:52:41,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.47 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 17.9 MB in the beginning and 26.0 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:41,862 INFO L168 Benchmark]: Boogie Preprocessor took 40.40 ms. Allocated memory is still 45.1 MB. Free memory was 26.0 MB in the beginning and 23.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:41,863 INFO L168 Benchmark]: RCFGBuilder took 512.05 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 23.9 MB in the beginning and 14.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:41,863 INFO L168 Benchmark]: TraceAbstraction took 16197.18 ms. Allocated memory was 46.7 MB in the beginning and 99.6 MB in the end (delta: 53.0 MB). Free memory was 14.0 MB in the beginning and 8.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 58.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:41,864 INFO L168 Benchmark]: Witness Printer took 78.35 ms. Allocated memory is still 99.6 MB. Free memory was 8.9 MB in the beginning and 78.5 MB in the end (delta: -69.6 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:41,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 34.1 MB. Free memory was 10.8 MB in the beginning and 10.8 MB in the end (delta: 68.4 kB). Peak memory consumption was 68.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 363.47 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 17.9 MB in the beginning and 26.0 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 40.40 ms. Allocated memory is still 45.1 MB. Free memory was 26.0 MB in the beginning and 23.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 512.05 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 23.9 MB in the beginning and 14.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 16197.18 ms. Allocated memory was 46.7 MB in the beginning and 99.6 MB in the end (delta: 53.0 MB). Free memory was 14.0 MB in the beginning and 8.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 58.0 MB. Max. memory is 14.3 GB. * Witness Printer took 78.35 ms. Allocated memory is still 99.6 MB. Free memory was 8.9 MB in the beginning and 78.5 MB in the end (delta: -69.6 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 66 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.1s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 614 SDtfs, 1578 SDslu, 1147 SDs, 0 SdLazy, 3680 SolverSat, 643 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 647 GetRequests, 394 SyntacticMatches, 8 SemanticMatches, 245 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 219 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 877 NumberOfCodeBlocks, 860 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 853 ConstructedInterpolants, 20 QuantifiedInterpolants, 183340 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1256 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 24 InterpolantComputations, 13 PerfectInterpolantSequences, 188/230 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 correct! Received shutdown request...