./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfd48abfacd60a3a4485060da29ebb446d23ac13 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:17:26,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:17:26,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:17:26,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:17:26,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:17:26,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:17:26,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:17:26,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:17:26,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:17:26,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:17:26,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:17:26,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:17:26,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:17:26,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:17:26,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:17:26,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:17:26,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:17:26,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:17:26,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:17:26,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:17:26,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:17:26,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:17:26,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:17:26,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:17:26,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:17:26,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:17:26,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:17:26,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:17:26,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:17:26,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:17:26,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:17:26,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:17:26,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:17:26,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:17:26,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:17:26,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:17:26,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:17:26,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:17:26,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:17:26,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:17:26,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:17:26,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:17:26,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:17:26,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:17:26,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:17:26,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:17:26,926 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:17:26,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:17:26,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:17:26,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:17:26,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:17:26,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:17:26,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:17:26,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:17:26,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:17:26,929 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:17:26,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:17:26,929 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:17:26,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:17:26,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:17:26,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:17:26,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:17:26,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:17:26,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:17:26,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:17:26,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:17:26,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:17:26,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:17:26,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:17:26,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:17:26,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:17:26,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfd48abfacd60a3a4485060da29ebb446d23ac13 [2020-10-25 22:17:27,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:17:27,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:17:27,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:17:27,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:17:27,403 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:17:27,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2020-10-25 22:17:27,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60456b49/7080caad15bd4ae8b5cc7a743e5a6008/FLAG6f5149981 [2020-10-25 22:17:28,089 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:17:28,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2020-10-25 22:17:28,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60456b49/7080caad15bd4ae8b5cc7a743e5a6008/FLAG6f5149981 [2020-10-25 22:17:28,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60456b49/7080caad15bd4ae8b5cc7a743e5a6008 [2020-10-25 22:17:28,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:17:28,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:17:28,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:28,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:17:28,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:17:28,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c90c8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28, skipping insertion in model container [2020-10-25 22:17:28,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:17:28,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:17:28,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:28,708 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:17:28,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:28,742 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:17:28,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28 WrapperNode [2020-10-25 22:17:28,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:28,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:28,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:17:28,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:17:28,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:28,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:17:28,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:17:28,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:17:28,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (1/1) ... [2020-10-25 22:17:28,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:17:28,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:17:28,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:17:28,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:17:28,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (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 [2020-10-25 22:17:28,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:17:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:17:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:17:28,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:17:29,084 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:17:29,084 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 22:17:29,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:29 BoogieIcfgContainer [2020-10-25 22:17:29,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:17:29,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:17:29,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:17:29,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:17:29,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:17:28" (1/3) ... [2020-10-25 22:17:29,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf3e36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:29, skipping insertion in model container [2020-10-25 22:17:29,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:28" (2/3) ... [2020-10-25 22:17:29,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf3e36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:29, skipping insertion in model container [2020-10-25 22:17:29,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:29" (3/3) ... [2020-10-25 22:17:29,096 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2020-10-25 22:17:29,108 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:17:29,113 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:17:29,127 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:17:29,166 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:17:29,167 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:17:29,167 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:17:29,167 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:17:29,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:17:29,168 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:17:29,168 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:17:29,168 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:17:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-25 22:17:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:17:29,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:29,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:29,198 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:29,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:29,206 INFO L82 PathProgramCache]: Analyzing trace with hash 531641672, now seen corresponding path program 1 times [2020-10-25 22:17:29,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:29,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736066659] [2020-10-25 22:17:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:29,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736066659] [2020-10-25 22:17:29,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:17:29,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:17:29,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980216510] [2020-10-25 22:17:29,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:17:29,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:29,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:17:29,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:17:29,453 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-25 22:17:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:29,475 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2020-10-25 22:17:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:17:29,477 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-25 22:17:29,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:29,495 INFO L225 Difference]: With dead ends: 24 [2020-10-25 22:17:29,495 INFO L226 Difference]: Without dead ends: 11 [2020-10-25 22:17:29,508 INFO L677 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 [2020-10-25 22:17:29,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-25 22:17:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-25 22:17:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-25 22:17:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-10-25 22:17:29,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-10-25 22:17:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:29,559 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-10-25 22:17:29,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:17:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-10-25 22:17:29,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:17:29,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:29,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:29,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:17:29,563 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:29,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:29,568 INFO L82 PathProgramCache]: Analyzing trace with hash 216721011, now seen corresponding path program 1 times [2020-10-25 22:17:29,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:29,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208874387] [2020-10-25 22:17:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:29,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208874387] [2020-10-25 22:17:29,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:17:29,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:17:29,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959465101] [2020-10-25 22:17:29,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:17:29,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:29,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:17:29,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:17:29,676 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2020-10-25 22:17:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:29,707 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-25 22:17:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:17:29,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-25 22:17:29,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:29,709 INFO L225 Difference]: With dead ends: 18 [2020-10-25 22:17:29,709 INFO L226 Difference]: Without dead ends: 12 [2020-10-25 22:17:29,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-25 22:17:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-25 22:17:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-25 22:17:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-10-25 22:17:29,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2020-10-25 22:17:29,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:29,714 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-10-25 22:17:29,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:17:29,714 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-10-25 22:17:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:17:29,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:29,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:29,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:17:29,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:29,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1820060357, now seen corresponding path program 1 times [2020-10-25 22:17:29,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:29,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315396497] [2020-10-25 22:17:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:29,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315396497] [2020-10-25 22:17:29,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:17:29,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:17:29,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279457320] [2020-10-25 22:17:29,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:17:29,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:29,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:17:29,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:17:29,777 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2020-10-25 22:17:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:29,853 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-10-25 22:17:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:17:29,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-25 22:17:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:29,855 INFO L225 Difference]: With dead ends: 23 [2020-10-25 22:17:29,855 INFO L226 Difference]: Without dead ends: 14 [2020-10-25 22:17:29,858 INFO L677 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 [2020-10-25 22:17:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-25 22:17:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-25 22:17:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-25 22:17:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-10-25 22:17:29,865 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2020-10-25 22:17:29,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:29,865 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-10-25 22:17:29,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:17:29,866 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-10-25 22:17:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:17:29,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:29,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:29,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 22:17:29,868 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:29,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:29,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1665560313, now seen corresponding path program 1 times [2020-10-25 22:17:29,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:29,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813698627] [2020-10-25 22:17:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:30,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813698627] [2020-10-25 22:17:30,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62616714] [2020-10-25 22:17:30,098 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 [2020-10-25 22:17:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:30,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-25 22:17:30,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:17:30,265 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:17:30,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-25 22:17:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:30,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:17:30,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-10-25 22:17:30,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840269087] [2020-10-25 22:17:30,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-25 22:17:30,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:30,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-25 22:17:30,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-25 22:17:30,307 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 11 states. [2020-10-25 22:17:30,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:30,421 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-10-25 22:17:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 22:17:30,422 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-25 22:17:30,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:30,423 INFO L225 Difference]: With dead ends: 21 [2020-10-25 22:17:30,423 INFO L226 Difference]: Without dead ends: 15 [2020-10-25 22:17:30,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-25 22:17:30,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-25 22:17:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-25 22:17:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-25 22:17:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-25 22:17:30,431 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-10-25 22:17:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:30,432 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-25 22:17:30,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-25 22:17:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-25 22:17:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 22:17:30,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:30,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:30,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:17:30,646 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:30,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:30,648 INFO L82 PathProgramCache]: Analyzing trace with hash 425228021, now seen corresponding path program 1 times [2020-10-25 22:17:30,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:30,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165102537] [2020-10-25 22:17:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:30,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165102537] [2020-10-25 22:17:30,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509751658] [2020-10-25 22:17:30,684 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 [2020-10-25 22:17:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:30,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-25 22:17:30,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:17:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:30,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:17:30,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-25 22:17:30,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203922389] [2020-10-25 22:17:30,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:17:30,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:30,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:17:30,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:30,750 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-10-25 22:17:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:30,772 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-10-25 22:17:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:17:30,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-25 22:17:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:30,773 INFO L225 Difference]: With dead ends: 26 [2020-10-25 22:17:30,773 INFO L226 Difference]: Without dead ends: 17 [2020-10-25 22:17:30,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-25 22:17:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-25 22:17:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-25 22:17:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-25 22:17:30,777 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2020-10-25 22:17:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:30,777 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-25 22:17:30,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:17:30,778 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-25 22:17:30,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 22:17:30,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:30,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:30,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:17:30,989 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:30,991 INFO L82 PathProgramCache]: Analyzing trace with hash -384118605, now seen corresponding path program 2 times [2020-10-25 22:17:30,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:30,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330510640] [2020-10-25 22:17:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:31,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330510640] [2020-10-25 22:17:31,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734948302] [2020-10-25 22:17:31,156 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 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 [2020-10-25 22:17:31,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 22:17:31,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:17:31,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-25 22:17:31,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:17:31,319 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-25 22:17:31,324 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-10-25 22:17:31,325 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-25 22:17:31,329 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-25 22:17:31,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-25 22:17:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:31,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:17:31,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-10-25 22:17:31,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910419119] [2020-10-25 22:17:31,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-25 22:17:31,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:31,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-25 22:17:31,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-25 22:17:31,356 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 14 states. [2020-10-25 22:17:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:31,636 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-25 22:17:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-25 22:17:31,637 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-10-25 22:17:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:31,637 INFO L225 Difference]: With dead ends: 29 [2020-10-25 22:17:31,637 INFO L226 Difference]: Without dead ends: 21 [2020-10-25 22:17:31,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-10-25 22:17:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-25 22:17:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-25 22:17:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-25 22:17:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-25 22:17:31,643 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2020-10-25 22:17:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:31,644 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-25 22:17:31,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-25 22:17:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-25 22:17:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 22:17:31,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:31,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:31,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:17:31,847 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:31,848 INFO L82 PathProgramCache]: Analyzing trace with hash -9370885, now seen corresponding path program 2 times [2020-10-25 22:17:31,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:31,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860405427] [2020-10-25 22:17:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:31,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860405427] [2020-10-25 22:17:31,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914474814] [2020-10-25 22:17:31,889 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 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 [2020-10-25 22:17:31,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-25 22:17:31,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 22:17:31,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 22:17:31,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:17:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:31,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:17:31,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-25 22:17:31,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298495259] [2020-10-25 22:17:31,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 22:17:31,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:31,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 22:17:31,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:17:31,954 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-10-25 22:17:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:32,006 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-25 22:17:32,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:17:32,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-25 22:17:32,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:32,007 INFO L225 Difference]: With dead ends: 30 [2020-10-25 22:17:32,008 INFO L226 Difference]: Without dead ends: 21 [2020-10-25 22:17:32,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-25 22:17:32,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-25 22:17:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-25 22:17:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-25 22:17:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-25 22:17:32,014 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2020-10-25 22:17:32,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:32,014 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-25 22:17:32,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 22:17:32,015 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-25 22:17:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 22:17:32,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:32,016 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:32,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:17:32,217 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:32,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:32,218 INFO L82 PathProgramCache]: Analyzing trace with hash -2113949387, now seen corresponding path program 3 times [2020-10-25 22:17:32,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:32,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658832367] [2020-10-25 22:17:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:17:32,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:17:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:17:32,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:17:32,314 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:17:32,315 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:17:32,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 22:17:32,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:17:32 BoogieIcfgContainer [2020-10-25 22:17:32,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:17:32,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:17:32,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:17:32,370 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:17:32,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:29" (3/4) ... [2020-10-25 22:17:32,375 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:17:32,443 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:17:32,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:17:32,446 INFO L168 Benchmark]: Toolchain (without parser) took 3978.71 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 23.3 MB in the beginning and 40.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:32,446 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 24.3 MB in the beginning and 24.3 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:32,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.61 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.7 MB in the beginning and 34.8 MB in the end (delta: -12.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:32,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.49 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 33.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:32,449 INFO L168 Benchmark]: Boogie Preprocessor took 23.12 ms. Allocated memory is still 56.6 MB. Free memory was 33.5 MB in the beginning and 32.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:32,449 INFO L168 Benchmark]: RCFGBuilder took 280.82 ms. Allocated memory is still 56.6 MB. Free memory was 32.4 MB in the beginning and 35.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:32,450 INFO L168 Benchmark]: TraceAbstraction took 3280.99 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.9 MB in the beginning and 42.6 MB in the end (delta: -7.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:32,451 INFO L168 Benchmark]: Witness Printer took 74.07 ms. Allocated memory is still 69.2 MB. Free memory was 42.6 MB in the beginning and 40.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:32,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 24.3 MB in the beginning and 24.3 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.61 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.7 MB in the beginning and 34.8 MB in the end (delta: -12.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.49 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 33.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.12 ms. Allocated memory is still 56.6 MB. Free memory was 33.5 MB in the beginning and 32.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 280.82 ms. Allocated memory is still 56.6 MB. Free memory was 32.4 MB in the beginning and 35.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3280.99 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.9 MB in the beginning and 42.6 MB in the end (delta: -7.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 74.07 ms. Allocated memory is still 69.2 MB. Free memory was 42.6 MB in the beginning and 40.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int i, n=__VERIFIER_nondet_uint(), sn=0; [L23] int i, n=__VERIFIER_nondet_uint(), sn=0; [L24] i=1 [L24] COND TRUE i<=n [L25] sn = sn + (2) [L26] COND FALSE !(i==4) [L24] i++ [L24] COND TRUE i<=n [L25] sn = sn + (2) [L26] COND FALSE !(i==4) [L24] i++ [L24] COND TRUE i<=n [L25] sn = sn + (2) [L26] COND FALSE !(i==4) [L24] i++ [L24] COND TRUE i<=n [L25] sn = sn + (2) [L26] COND TRUE i==4 [L26] sn=-10 [L24] i++ [L24] COND FALSE !(i<=n) [L15] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sum01_bug02_sum01_bug02_base.case.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 27 SDslu, 109 SDs, 0 SdLazy, 179 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 6253 SizeOfPredicates, 12 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 17/47 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...