./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer --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 516995e3ae59a20b0dc721bf699a545863802fef .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-29 20:15:29,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:15:29,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:15:29,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:15:29,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:15:29,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:15:29,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:15:29,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:15:29,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:15:29,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:15:29,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:15:29,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:15:29,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:15:29,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:15:29,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:15:29,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:15:29,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:15:29,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:15:29,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:15:29,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:15:29,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:15:29,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:15:29,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:15:29,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:15:29,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:15:29,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:15:29,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:15:29,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:15:29,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:15:29,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:15:29,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:15:29,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:15:29,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:15:29,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:15:29,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:15:29,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:15:29,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:15:29,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:15:29,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:15:29,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:15:29,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:15:29,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:15:29,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:15:29,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:15:29,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:15:29,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:15:29,941 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:15:29,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:15:29,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:15:29,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:15:29,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:15:29,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:15:29,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:15:29,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:15:29,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:15:29,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:15:29,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:15:29,945 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:15:29,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:15:29,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:15:29,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:15:29,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:15:29,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:15:29,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:15:29,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:15:29,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:15:29,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:15:29,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:15:29,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:15:29,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:15:29,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:15:29,949 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:/tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516995e3ae59a20b0dc721bf699a545863802fef [2020-11-29 20:15:30,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:15:30,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:15:30,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:15:30,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:15:30,287 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:15:30,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2020-11-29 20:15:30,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/data/73d10e59e/4f6d84d6ed5d4c52903c29c435342c39/FLAG68c5e3de3 [2020-11-29 20:15:30,980 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:15:30,981 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2020-11-29 20:15:30,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/data/73d10e59e/4f6d84d6ed5d4c52903c29c435342c39/FLAG68c5e3de3 [2020-11-29 20:15:31,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/data/73d10e59e/4f6d84d6ed5d4c52903c29c435342c39 [2020-11-29 20:15:31,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:15:31,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:15:31,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:15:31,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:15:31,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:15:31,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260d5820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31, skipping insertion in model container [2020-11-29 20:15:31,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:15:31,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:15:31,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:15:31,634 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:15:31,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:15:31,693 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:15:31,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31 WrapperNode [2020-11-29 20:15:31,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:15:31,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:15:31,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:15:31,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:15:31,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:15:31,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:15:31,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:15:31,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:15:31,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... [2020-11-29 20:15:31,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:15:31,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:15:31,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:15:31,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:15:31,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/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 [2020-11-29 20:15:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:15:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:15:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:15:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:15:32,288 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:15:32,300 INFO L298 CfgBuilder]: Removed 27 assume(true) statements. [2020-11-29 20:15:32,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:32 BoogieIcfgContainer [2020-11-29 20:15:32,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:15:32,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:15:32,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:15:32,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:15:32,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:15:31" (1/3) ... [2020-11-29 20:15:32,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69128ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:15:32, skipping insertion in model container [2020-11-29 20:15:32,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:31" (2/3) ... [2020-11-29 20:15:32,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69128ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:15:32, skipping insertion in model container [2020-11-29 20:15:32,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:32" (3/3) ... [2020-11-29 20:15:32,327 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_unwindbound1.c [2020-11-29 20:15:32,340 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:15:32,361 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 20:15:32,377 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 20:15:32,406 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:15:32,406 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:15:32,406 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:15:32,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:15:32,407 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:15:32,407 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:15:32,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:15:32,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:15:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-29 20:15:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:15:32,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:32,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:32,450 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:32,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:32,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1233739953, now seen corresponding path program 1 times [2020-11-29 20:15:32,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:32,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757539060] [2020-11-29 20:15:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:32,572 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:15:32,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950844845] [2020-11-29 20:15:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/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 [2020-11-29 20:15:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:32,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 20:15:32,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:15:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:15:32,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757539060] [2020-11-29 20:15:32,765 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:15:32,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950844845] [2020-11-29 20:15:32,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:32,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:15:32,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166513480] [2020-11-29 20:15:32,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:15:32,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:32,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:15:32,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:15:32,804 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-29 20:15:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:32,826 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2020-11-29 20:15:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:15:32,827 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 20:15:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:32,838 INFO L225 Difference]: With dead ends: 61 [2020-11-29 20:15:32,839 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 20:15:32,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:15:32,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 20:15:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 20:15:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 20:15:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-29 20:15:32,892 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 10 [2020-11-29 20:15:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:32,893 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-29 20:15:32,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:15:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-29 20:15:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:15:32,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:32,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:33,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-29 20:15:33,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-11-29 20:15:33,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:33,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346642143] [2020-11-29 20:15:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:33,145 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:15:33,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898867652] [2020-11-29 20:15:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/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 [2020-11-29 20:15:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:33,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:15:33,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:15:35,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:15:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:15:41,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346642143] [2020-11-29 20:15:41,627 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:15:41,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898867652] [2020-11-29 20:15:41,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:41,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:41,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443013763] [2020-11-29 20:15:41,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:41,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:41,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:41,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:41,639 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-11-29 20:15:46,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:46,105 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2020-11-29 20:15:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:46,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:15:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:46,109 INFO L225 Difference]: With dead ends: 51 [2020-11-29 20:15:46,109 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 20:15:46,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:15:46,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 20:15:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-11-29 20:15:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 20:15:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-11-29 20:15:46,128 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 10 [2020-11-29 20:15:46,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:46,129 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-11-29 20:15:46,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:46,130 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2020-11-29 20:15:46,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:15:46,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:46,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:46,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:15:46,360 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1507372449, now seen corresponding path program 1 times [2020-11-29 20:15:46,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:46,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376162435] [2020-11-29 20:15:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:46,372 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:15:46,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071714936] [2020-11-29 20:15:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/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 [2020-11-29 20:15:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:46,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 20:15:46,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:15:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:15:46,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376162435] [2020-11-29 20:15:46,503 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:15:46,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071714936] [2020-11-29 20:15:46,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:46,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:15:46,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272607539] [2020-11-29 20:15:46,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:46,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:46,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:46,505 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 4 states. [2020-11-29 20:15:46,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:46,542 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-11-29 20:15:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:46,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 20:15:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:46,546 INFO L225 Difference]: With dead ends: 44 [2020-11-29 20:15:46,547 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 20:15:46,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 20:15:46,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-29 20:15:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:15:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-11-29 20:15:46,566 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 11 [2020-11-29 20:15:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:46,566 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-29 20:15:46,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-11-29 20:15:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:15:46,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:46,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:46,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:15:46,791 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:46,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1188453480, now seen corresponding path program 1 times [2020-11-29 20:15:46,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:46,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329420301] [2020-11-29 20:15:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:46,809 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:15:46,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654306924] [2020-11-29 20:15:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/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 [2020-11-29 20:15:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:46,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:15:46,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:15:46,905 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:15:46,905 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:15:46,971 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:15:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:15:47,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329420301] [2020-11-29 20:15:47,074 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:15:47,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654306924] [2020-11-29 20:15:47,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:47,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:15:47,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94184197] [2020-11-29 20:15:47,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:15:47,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:47,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:15:47,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:15:47,076 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 6 states. [2020-11-29 20:15:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:57,833 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-11-29 20:15:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:15:57,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 20:15:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:57,835 INFO L225 Difference]: With dead ends: 64 [2020-11-29 20:15:57,835 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 20:15:57,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:15:57,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 20:15:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-11-29 20:15:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 20:15:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-11-29 20:15:57,846 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 13 [2020-11-29 20:15:57,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:57,846 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-11-29 20:15:57,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:15:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-11-29 20:15:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:15:57,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:57,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:58,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:15:58,060 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:58,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:58,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1139013242, now seen corresponding path program 1 times [2020-11-29 20:15:58,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:58,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236850630] [2020-11-29 20:15:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:58,070 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:15:58,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755334519] [2020-11-29 20:15:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:15:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:58,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:15:58,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:15:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:15:58,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236850630] [2020-11-29 20:15:58,197 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:15:58,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755334519] [2020-11-29 20:15:58,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:58,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:58,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388486903] [2020-11-29 20:15:58,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:15:58,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:58,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:15:58,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:15:58,200 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 5 states. [2020-11-29 20:15:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:58,263 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-11-29 20:15:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:15:58,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 20:15:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:58,266 INFO L225 Difference]: With dead ends: 63 [2020-11-29 20:15:58,266 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 20:15:58,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:15:58,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 20:15:58,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-29 20:15:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 20:15:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-29 20:15:58,274 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2020-11-29 20:15:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:58,274 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-29 20:15:58,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:15:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-29 20:15:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:15:58,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:58,276 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:58,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:15:58,508 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash -338682291, now seen corresponding path program 1 times [2020-11-29 20:15:58,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:58,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33041203] [2020-11-29 20:15:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:58,536 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:15:58,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475340178] [2020-11-29 20:15:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:15:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:58,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:58,661 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:58,698 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:58,699 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:15:58,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:15:58,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:15:58 BoogieIcfgContainer [2020-11-29 20:15:58,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:15:58,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:15:58,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:15:58,954 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:15:58,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:32" (3/4) ... [2020-11-29 20:15:58,956 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:15:59,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6ab624d7-74c4-4d91-8e3d-e0ac59f2e63c/bin/uautomizer/witness.graphml [2020-11-29 20:15:59,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:15:59,009 INFO L168 Benchmark]: Toolchain (without parser) took 27705.69 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 59.9 MB in the beginning and 72.1 MB in the end (delta: -12.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:59,010 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 48.8 MB in the beginning and 48.7 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:15:59,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.34 ms. Allocated memory is still 90.2 MB. Free memory was 59.6 MB in the beginning and 67.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:59,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.75 ms. Allocated memory is still 90.2 MB. Free memory was 67.3 MB in the beginning and 65.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:59,013 INFO L168 Benchmark]: Boogie Preprocessor took 43.63 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.7 MB in the end (delta: 901.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:15:59,014 INFO L168 Benchmark]: RCFGBuilder took 517.38 ms. Allocated memory is still 90.2 MB. Free memory was 64.3 MB in the beginning and 49.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:59,015 INFO L168 Benchmark]: TraceAbstraction took 26649.26 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 48.4 MB in the beginning and 74.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:59,015 INFO L168 Benchmark]: Witness Printer took 53.22 ms. Allocated memory is still 121.6 MB. Free memory was 74.2 MB in the beginning and 72.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:59,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 48.8 MB in the beginning and 48.7 MB in the end (delta: 39.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 372.34 ms. Allocated memory is still 90.2 MB. Free memory was 59.6 MB in the beginning and 67.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.75 ms. Allocated memory is still 90.2 MB. Free memory was 67.3 MB in the beginning and 65.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.63 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.7 MB in the end (delta: 901.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 517.38 ms. Allocated memory is still 90.2 MB. Free memory was 64.3 MB in the beginning and 49.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26649.26 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 48.4 MB in the beginning and 74.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 53.22 ms. Allocated memory is still 121.6 MB. Free memory was 74.2 MB in the beginning and 72.1 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: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) VAL [counter=0] [L9] COND FALSE !(!cond) VAL [counter=0] [L29] u = ((long long) 2 * R) + 1 [L30] v = 1 [L31] r = ((long long) R * R) - A VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<1 [L12] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND FALSE !(!(r != 0)) VAL [counter=1] [L39] EXPR counter++ VAL [counter=2] [L39] COND FALSE !(counter++<1) [L47] EXPR counter++ VAL [counter=3] [L47] COND FALSE !(counter++<1) [L34] EXPR counter++ VAL [counter=4] [L34] COND FALSE !(counter++<1) [L12] COND TRUE !(cond) VAL [counter=4] [L5] __assert_fail("0", "fermat1-ll.c", 5, "reach_error") VAL [counter=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.5s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 15.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 109 SDslu, 170 SDs, 0 SdLazy, 116 SolverSat, 32 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=3, 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, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 2829 SizeOfPredicates, 16 NumberOfNonLiveVariables, 374 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 3/3 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...