./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3c39aff9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/brs2f.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73252317e8e8ddde1fed282fcf12f7cfbb9f94a9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-3c39aff [2019-11-27 18:43:37,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 18:43:37,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 18:43:37,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 18:43:37,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 18:43:37,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 18:43:37,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 18:43:37,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 18:43:37,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 18:43:37,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 18:43:37,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 18:43:37,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 18:43:37,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 18:43:37,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 18:43:37,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 18:43:37,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 18:43:37,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 18:43:37,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 18:43:37,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 18:43:37,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 18:43:37,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 18:43:37,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 18:43:37,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 18:43:37,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 18:43:37,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 18:43:37,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 18:43:37,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 18:43:37,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 18:43:37,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 18:43:38,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 18:43:38,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 18:43:38,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 18:43:38,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 18:43:38,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 18:43:38,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 18:43:38,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 18:43:38,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 18:43:38,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 18:43:38,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 18:43:38,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 18:43:38,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 18:43:38,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 18:43:38,031 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 18:43:38,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 18:43:38,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 18:43:38,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 18:43:38,034 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 18:43:38,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 18:43:38,034 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 18:43:38,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 18:43:38,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 18:43:38,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 18:43:38,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 18:43:38,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 18:43:38,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 18:43:38,036 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 18:43:38,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 18:43:38,037 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 18:43:38,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 18:43:38,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 18:43:38,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 18:43:38,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 18:43:38,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 18:43:38,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 18:43:38,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 18:43:38,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 18:43:38,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 18:43:38,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 18:43:38,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 18:43:38,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 18:43:38,041 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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73252317e8e8ddde1fed282fcf12f7cfbb9f94a9 [2019-11-27 18:43:38,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 18:43:38,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 18:43:38,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 18:43:38,406 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 18:43:38,407 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 18:43:38,408 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs2f.c [2019-11-27 18:43:38,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5318952/b873a8ad9fdd4eb08d3f74d149a40ff7/FLAG150313a48 [2019-11-27 18:43:38,913 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 18:43:38,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2f.c [2019-11-27 18:43:38,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5318952/b873a8ad9fdd4eb08d3f74d149a40ff7/FLAG150313a48 [2019-11-27 18:43:39,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e5318952/b873a8ad9fdd4eb08d3f74d149a40ff7 [2019-11-27 18:43:39,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 18:43:39,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 18:43:39,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 18:43:39,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 18:43:39,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 18:43:39,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33519a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39, skipping insertion in model container [2019-11-27 18:43:39,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 18:43:39,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 18:43:39,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 18:43:39,535 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 18:43:39,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 18:43:39,570 INFO L208 MainTranslator]: Completed translation [2019-11-27 18:43:39,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39 WrapperNode [2019-11-27 18:43:39,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 18:43:39,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 18:43:39,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 18:43:39,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 18:43:39,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 18:43:39,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 18:43:39,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 18:43:39,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 18:43:39,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (1/1) ... [2019-11-27 18:43:39,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 18:43:39,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 18:43:39,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 18:43:39,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 18:43:39,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (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 [2019-11-27 18:43:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 18:43:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 18:43:39,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 18:43:39,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 18:43:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 18:43:39,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 18:43:39,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 18:43:39,989 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 18:43:39,989 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-27 18:43:39,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:43:39 BoogieIcfgContainer [2019-11-27 18:43:39,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 18:43:39,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 18:43:39,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 18:43:39,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 18:43:39,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 06:43:39" (1/3) ... [2019-11-27 18:43:39,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cf3ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:43:39, skipping insertion in model container [2019-11-27 18:43:39,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:43:39" (2/3) ... [2019-11-27 18:43:39,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cf3ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:43:39, skipping insertion in model container [2019-11-27 18:43:39,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:43:39" (3/3) ... [2019-11-27 18:43:40,000 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2019-11-27 18:43:40,012 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 18:43:40,023 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 18:43:40,038 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 18:43:40,080 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 18:43:40,081 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 18:43:40,081 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 18:43:40,081 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 18:43:40,082 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 18:43:40,082 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 18:43:40,082 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 18:43:40,083 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 18:43:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-27 18:43:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 18:43:40,109 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:40,110 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:40,110 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 18:43:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:40,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1623807605, now seen corresponding path program 1 times [2019-11-27 18:43:40,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:40,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114310252] [2019-11-27 18:43:40,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:40,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114310252] [2019-11-27 18:43:40,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:43:40,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 18:43:40,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72461277] [2019-11-27 18:43:40,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 18:43:40,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:40,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 18:43:40,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 18:43:40,291 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-27 18:43:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:40,311 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2019-11-27 18:43:40,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 18:43:40,312 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-27 18:43:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:40,323 INFO L225 Difference]: With dead ends: 30 [2019-11-27 18:43:40,323 INFO L226 Difference]: Without dead ends: 14 [2019-11-27 18:43:40,327 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 18:43:40,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-27 18:43:40,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-27 18:43:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-27 18:43:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-27 18:43:40,365 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2019-11-27 18:43:40,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:40,366 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-27 18:43:40,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 18:43:40,367 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-27 18:43:40,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 18:43:40,367 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:40,368 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:40,368 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 18:43:40,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:40,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1308886944, now seen corresponding path program 1 times [2019-11-27 18:43:40,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:40,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191294583] [2019-11-27 18:43:40,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:40,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191294583] [2019-11-27 18:43:40,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:43:40,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 18:43:40,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369912216] [2019-11-27 18:43:40,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 18:43:40,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:40,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 18:43:40,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 18:43:40,498 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2019-11-27 18:43:40,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:40,602 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2019-11-27 18:43:40,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 18:43:40,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-27 18:43:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:40,604 INFO L225 Difference]: With dead ends: 28 [2019-11-27 18:43:40,604 INFO L226 Difference]: Without dead ends: 17 [2019-11-27 18:43:40,605 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 18:43:40,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-27 18:43:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-27 18:43:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-27 18:43:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-27 18:43:40,615 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2019-11-27 18:43:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:40,617 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-27 18:43:40,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 18:43:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-27 18:43:40,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-27 18:43:40,618 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:40,618 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:40,619 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 18:43:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:40,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1738269227, now seen corresponding path program 1 times [2019-11-27 18:43:40,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:40,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013164787] [2019-11-27 18:43:40,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-27 18:43:40,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013164787] [2019-11-27 18:43:40,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:43:40,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 18:43:40,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105157635] [2019-11-27 18:43:40,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 18:43:40,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:40,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 18:43:40,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 18:43:40,747 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-11-27 18:43:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:40,803 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-27 18:43:40,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 18:43:40,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-27 18:43:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:40,805 INFO L225 Difference]: With dead ends: 27 [2019-11-27 18:43:40,805 INFO L226 Difference]: Without dead ends: 20 [2019-11-27 18:43:40,806 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 18:43:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-27 18:43:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-27 18:43:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 18:43:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-27 18:43:40,812 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-11-27 18:43:40,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:40,812 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-27 18:43:40,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 18:43:40,813 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-27 18:43:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 18:43:40,814 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:40,814 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:40,814 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 18:43:40,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:40,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1896871737, now seen corresponding path program 1 times [2019-11-27 18:43:40,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:40,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965348103] [2019-11-27 18:43:40,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-27 18:43:40,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965348103] [2019-11-27 18:43:40,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 18:43:40,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-27 18:43:40,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632758493] [2019-11-27 18:43:40,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 18:43:40,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:40,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 18:43:40,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-27 18:43:40,917 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2019-11-27 18:43:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:40,991 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-11-27 18:43:40,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 18:43:40,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-27 18:43:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:40,993 INFO L225 Difference]: With dead ends: 25 [2019-11-27 18:43:40,993 INFO L226 Difference]: Without dead ends: 21 [2019-11-27 18:43:40,994 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-27 18:43:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-27 18:43:40,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-27 18:43:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-27 18:43:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-27 18:43:41,000 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2019-11-27 18:43:41,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:41,000 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-27 18:43:41,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 18:43:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-27 18:43:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 18:43:41,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:41,002 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:41,002 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 18:43:41,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:41,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1877487447, now seen corresponding path program 1 times [2019-11-27 18:43:41,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:41,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505752418] [2019-11-27 18:43:41,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:41,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505752418] [2019-11-27 18:43:41,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265275404] [2019-11-27 18:43:41,126 INFO L94 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 [2019-11-27 18:43:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:41,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-27 18:43:41,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:41,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 18:43:41,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-27 18:43:41,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010973420] [2019-11-27 18:43:41,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 18:43:41,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:41,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 18:43:41,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-27 18:43:41,301 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 10 states. [2019-11-27 18:43:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:41,480 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2019-11-27 18:43:41,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-27 18:43:41,481 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-27 18:43:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:41,482 INFO L225 Difference]: With dead ends: 41 [2019-11-27 18:43:41,482 INFO L226 Difference]: Without dead ends: 27 [2019-11-27 18:43:41,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-27 18:43:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-27 18:43:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-27 18:43:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-27 18:43:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-27 18:43:41,495 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2019-11-27 18:43:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:41,495 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-27 18:43:41,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 18:43:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-27 18:43:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-27 18:43:41,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:41,498 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:41,711 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:41,711 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 18:43:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1112618428, now seen corresponding path program 1 times [2019-11-27 18:43:41,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:41,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174941299] [2019-11-27 18:43:41,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:42,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174941299] [2019-11-27 18:43:42,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110412870] [2019-11-27 18:43:42,216 INFO L94 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 [2019-11-27 18:43:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:42,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-27 18:43:42,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:42,313 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-27 18:43:42,314 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 18:43:42,324 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 18:43:42,325 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-27 18:43:42,325 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-27 18:43:42,416 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-27 18:43:42,417 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 18:43:42,432 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 18:43:42,433 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 18:43:42,434 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2019-11-27 18:43:42,517 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-11-27 18:43:42,517 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 18:43:42,531 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 18:43:42,532 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 18:43:42,532 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2019-11-27 18:43:42,636 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2019-11-27 18:43:42,637 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 18:43:42,649 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 18:43:42,650 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-27 18:43:42,651 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:31 [2019-11-27 18:43:42,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 18:43:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:42,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 18:43:42,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2019-11-27 18:43:42,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461088561] [2019-11-27 18:43:42,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-27 18:43:42,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:42,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-27 18:43:42,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2019-11-27 18:43:42,758 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 23 states. [2019-11-27 18:43:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:43,430 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-11-27 18:43:43,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-27 18:43:43,430 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 21 [2019-11-27 18:43:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:43,431 INFO L225 Difference]: With dead ends: 49 [2019-11-27 18:43:43,431 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 18:43:43,433 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2019-11-27 18:43:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 18:43:43,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-27 18:43:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-27 18:43:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-11-27 18:43:43,439 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2019-11-27 18:43:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:43,440 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-27 18:43:43,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-27 18:43:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-11-27 18:43:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-27 18:43:43,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:43,441 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:43,641 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:43,642 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 18:43:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:43,643 INFO L82 PathProgramCache]: Analyzing trace with hash -945725626, now seen corresponding path program 2 times [2019-11-27 18:43:43,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:43,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151259651] [2019-11-27 18:43:43,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 18:43:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:43,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151259651] [2019-11-27 18:43:43,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024555911] [2019-11-27 18:43:43,848 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-27 18:43:43,888 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-27 18:43:43,888 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 18:43:43,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 18:43:43,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 18:43:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 18:43:44,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 18:43:44,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2019-11-27 18:43:44,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916346279] [2019-11-27 18:43:44,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-27 18:43:44,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 18:43:44,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-27 18:43:44,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2019-11-27 18:43:44,022 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 19 states. [2019-11-27 18:43:44,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 18:43:44,281 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-11-27 18:43:44,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-27 18:43:44,282 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2019-11-27 18:43:44,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 18:43:44,284 INFO L225 Difference]: With dead ends: 48 [2019-11-27 18:43:44,284 INFO L226 Difference]: Without dead ends: 33 [2019-11-27 18:43:44,285 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2019-11-27 18:43:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-27 18:43:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2019-11-27 18:43:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 18:43:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-11-27 18:43:44,298 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2019-11-27 18:43:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 18:43:44,299 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-11-27 18:43:44,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-27 18:43:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-11-27 18:43:44,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-27 18:43:44,301 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 18:43:44,301 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 18:43:44,507 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 18:43:44,508 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 18:43:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 18:43:44,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1279110679, now seen corresponding path program 3 times [2019-11-27 18:43:44,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 18:43:44,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674709417] [2019-11-27 18:43:44,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 18:43:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 18:43:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 18:43:44,638 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 18:43:44,638 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 18:43:44,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 06:43:44 BoogieIcfgContainer [2019-11-27 18:43:44,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 18:43:44,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 18:43:44,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 18:43:44,700 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 18:43:44,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:43:39" (3/4) ... [2019-11-27 18:43:44,703 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 18:43:44,760 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 18:43:44,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 18:43:44,762 INFO L168 Benchmark]: Toolchain (without parser) took 5445.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.3 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -141.8 MB). Peak memory consumption was 59.5 MB. Max. memory is 11.5 GB. [2019-11-27 18:43:44,762 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 18:43:44,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.57 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 18:43:44,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 18:43:44,764 INFO L168 Benchmark]: Boogie Preprocessor took 26.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 18:43:44,765 INFO L168 Benchmark]: RCFGBuilder took 298.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-27 18:43:44,766 INFO L168 Benchmark]: TraceAbstraction took 4708.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -260.8 kB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. [2019-11-27 18:43:44,769 INFO L168 Benchmark]: Witness Printer took 60.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-27 18:43:44,775 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.57 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 93.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 298.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4708.12 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -260.8 kB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. * Witness Printer took 60.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=3] [L26] COND TRUE i