./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/water_pid.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be --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 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 ...................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be --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 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 ....................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:20:48,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:20:48,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:20:48,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:20:48,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:20:48,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:20:48,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:20:48,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:20:48,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:20:48,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:20:48,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:20:48,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:20:48,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:20:48,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:20:48,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:20:48,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:20:48,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:20:48,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:20:48,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:20:48,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:20:48,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:20:48,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:20:48,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:20:48,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:20:48,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:20:48,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:20:48,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:20:48,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:20:48,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:20:48,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:20:48,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:20:48,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:20:48,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:20:48,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:20:48,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:20:48,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:20:48,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:20:48,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:20:48,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:20:48,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:20:48,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:20:48,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:20:48,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:20:48,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:20:48,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:20:48,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:20:48,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:20:48,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:20:48,411 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:20:48,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:20:48,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:20:48,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:20:48,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:20:48,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:20:48,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:20:48,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:20:48,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:20:48,413 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:20:48,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:20:48,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:20:48,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:20:48,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:20:48,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:20:48,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:20:48,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:20:48,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:20:48,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:20:48,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:20:48,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:20:48,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:20:48,416 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:20:48,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:20:48,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:20:48,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:20:48,417 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_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2021-10-21 20:20:48,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:20:48,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:20:48,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:20:48,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:20:48,688 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:20:48,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/water_pid.c [2021-10-21 20:20:48,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data/6ada392f4/e3f2b43c78c34b608a7eec52db7f897a/FLAG8f360d5ca [2021-10-21 20:20:49,212 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:20:49,213 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/sv-benchmarks/c/float-benchs/water_pid.c [2021-10-21 20:20:49,219 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data/6ada392f4/e3f2b43c78c34b608a7eec52db7f897a/FLAG8f360d5ca [2021-10-21 20:20:49,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data/6ada392f4/e3f2b43c78c34b608a7eec52db7f897a [2021-10-21 20:20:49,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:20:49,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:20:49,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:49,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:20:49,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:20:49,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45370413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49, skipping insertion in model container [2021-10-21 20:20:49,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:20:49,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:20:49,827 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-10-21 20:20:49,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:49,855 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:20:49,867 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-10-21 20:20:49,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:49,885 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:20:49,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49 WrapperNode [2021-10-21 20:20:49,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:49,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:20:49,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:20:49,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:20:49,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:20:49,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:20:49,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:20:49,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:20:49,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:20:49,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:20:49,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:20:49,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:20:49,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (1/1) ... [2021-10-21 20:20:49,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:20:49,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:20:50,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:20:50,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:20:50,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:20:50,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:20:50,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:20:50,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:20:50,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:20:50,288 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-21 20:20:50,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:50 BoogieIcfgContainer [2021-10-21 20:20:50,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:20:50,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:20:50,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:20:50,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:20:50,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:20:49" (1/3) ... [2021-10-21 20:20:50,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cd5d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:20:50, skipping insertion in model container [2021-10-21 20:20:50,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:49" (2/3) ... [2021-10-21 20:20:50,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cd5d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:20:50, skipping insertion in model container [2021-10-21 20:20:50,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:50" (3/3) ... [2021-10-21 20:20:50,299 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-10-21 20:20:50,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:20:50,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:20:50,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:20:50,359 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:20:50,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:20:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:20:50,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:50,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:50,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:20:50,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:50,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1804134213, now seen corresponding path program 1 times [2021-10-21 20:20:50,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:20:50,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389487488] [2021-10-21 20:20:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:50,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:20:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:20:50,492 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:20:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:20:50,563 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:20:50,565 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:20:50,566 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:20:50,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:20:50,576 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:20:50,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:20:50 BoogieIcfgContainer [2021-10-21 20:20:50,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:20:50,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:20:50,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:20:50,601 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:20:50,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:50" (3/4) ... [2021-10-21 20:20:50,604 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:20:50,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:20:50,606 INFO L168 Benchmark]: Toolchain (without parser) took 988.95 ms. Allocated memory is still 96.5 MB. Free memory was 62.3 MB in the beginning and 45.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,607 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:20:50,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.55 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 73.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.22 ms. Allocated memory is still 96.5 MB. Free memory was 73.0 MB in the beginning and 71.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,609 INFO L168 Benchmark]: Boogie Preprocessor took 23.11 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 70.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,610 INFO L168 Benchmark]: RCFGBuilder took 345.00 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 60.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,611 INFO L168 Benchmark]: TraceAbstraction took 307.95 ms. Allocated memory is still 96.5 MB. Free memory was 60.0 MB in the beginning and 45.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,611 INFO L168 Benchmark]: Witness Printer took 3.65 ms. Allocated memory is still 96.5 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:20:50,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 51.0 MB in the beginning and 51.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.55 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 73.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.22 ms. Allocated memory is still 96.5 MB. Free memory was 73.0 MB in the beginning and 71.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.11 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 70.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 345.00 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 60.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 307.95 ms. Allocated memory is still 96.5 MB. Free memory was 60.0 MB in the beginning and 45.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.65 ms. Allocated memory is still 96.5 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 41. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 [L18] yn += ui [L19] return yn; VAL [yn=49] [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 VAL [yn=49] [L39] COND TRUE i<120 [L18] yn += ui [L19] return yn; VAL [yn=52] [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L8] COND TRUE !(cond) VAL [yn=52] [L8] reach_error() VAL [yn=52] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 224.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.6ms SsaConstructionTime, 41.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-10-21 20:20:50,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:20:53,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:20:53,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:20:53,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:20:53,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:20:53,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:20:53,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:20:53,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:20:53,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:20:53,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:20:53,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:20:53,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:20:53,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:20:53,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:20:53,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:20:53,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:20:53,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:20:53,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:20:53,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:20:53,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:20:53,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:20:53,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:20:53,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:20:53,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:20:53,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:20:53,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:20:53,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:20:53,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:20:53,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:20:53,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:20:53,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:20:53,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:20:53,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:20:53,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:20:53,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:20:53,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:20:53,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:20:53,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:20:53,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:20:53,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:20:53,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:20:53,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:20:53,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:20:53,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:20:53,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:20:53,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:20:53,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:20:53,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:20:53,408 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:20:53,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:20:53,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:20:53,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:20:53,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:20:53,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:20:53,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:20:53,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:20:53,411 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:20:53,411 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:20:53,412 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:20:53,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:20:53,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:20:53,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:20:53,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:20:53,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:20:53,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:20:53,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:20:53,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:20:53,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:20:53,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:20:53,414 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:20:53,415 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:20:53,415 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:20:53,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:20:53,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:20:53,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:20:53,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:20:53,416 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2021-10-21 20:20:53,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:20:53,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:20:53,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:20:53,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:20:53,908 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:20:53,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-benchs/water_pid.c [2021-10-21 20:20:54,001 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data/8c719ead5/bab9447fda8441c6a42ac790e0460d22/FLAG4d62e6168 [2021-10-21 20:20:54,488 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:20:54,488 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/sv-benchmarks/c/float-benchs/water_pid.c [2021-10-21 20:20:54,507 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data/8c719ead5/bab9447fda8441c6a42ac790e0460d22/FLAG4d62e6168 [2021-10-21 20:20:54,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/data/8c719ead5/bab9447fda8441c6a42ac790e0460d22 [2021-10-21 20:20:54,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:20:54,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:20:54,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:54,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:20:54,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:20:54,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:54" (1/1) ... [2021-10-21 20:20:54,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0e8b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:54, skipping insertion in model container [2021-10-21 20:20:54,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:54" (1/1) ... [2021-10-21 20:20:54,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:20:54,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:20:55,089 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-10-21 20:20:55,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:55,134 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:20:55,150 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2021-10-21 20:20:55,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:55,183 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:20:55,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55 WrapperNode [2021-10-21 20:20:55,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:55,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:20:55,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:20:55,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:20:55,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:20:55,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:20:55,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:20:55,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:20:55,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:20:55,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:20:55,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:20:55,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:20:55,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (1/1) ... [2021-10-21 20:20:55,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:20:55,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:20:55,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:20:55,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:20:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:20:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:20:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:20:55,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:20:59,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:20:59,602 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-21 20:20:59,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:59 BoogieIcfgContainer [2021-10-21 20:20:59,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:20:59,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:20:59,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:20:59,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:20:59,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:20:54" (1/3) ... [2021-10-21 20:20:59,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ff466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:20:59, skipping insertion in model container [2021-10-21 20:20:59,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:55" (2/3) ... [2021-10-21 20:20:59,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ff466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:20:59, skipping insertion in model container [2021-10-21 20:20:59,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:59" (3/3) ... [2021-10-21 20:20:59,615 INFO L111 eAbstractionObserver]: Analyzing ICFG water_pid.c [2021-10-21 20:20:59,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:20:59,622 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:20:59,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:20:59,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:20:59,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:20:59,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:59,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:20:59,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:59,720 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:59,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:20:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:59,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1804134213, now seen corresponding path program 1 times [2021-10-21 20:20:59,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:20:59,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57405730] [2021-10-21 20:20:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:59,743 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:20:59,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:20:59,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:20:59,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:21:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:03,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:21:03,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:04,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:21:31,957 WARN L207 SmtUtils]: Spent 7.43 s on a formula simplification that was a NOOP. DAG size: 12 [2021-10-21 20:21:43,763 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-10-21 20:21:45,794 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0) c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2021-10-21 20:21:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:45,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:21:45,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57405730] [2021-10-21 20:21:45,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57405730] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:45,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:45,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-21 20:21:45,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721898224] [2021-10-21 20:21:45,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:21:45,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:21:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:21:45,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=53, Unknown=2, NotChecked=14, Total=90 [2021-10-21 20:21:45,825 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:05,307 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-10-21 20:22:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:22:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-21 20:22:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:22:05,317 INFO L225 Difference]: With dead ends: 37 [2021-10-21 20:22:05,318 INFO L226 Difference]: Without dead ends: 15 [2021-10-21 20:22:05,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 28274.1ms TimeCoverageRelationStatistics Valid=28, Invalid=64, Unknown=2, NotChecked=16, Total=110 [2021-10-21 20:22:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-21 20:22:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2021-10-21 20:22:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-21 20:22:05,349 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-10-21 20:22:05,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:22:05,350 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-21 20:22:05,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:22:05,350 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-21 20:22:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:22:05,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:22:05,351 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:22:05,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:22:05,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:22:05,554 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:22:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:22:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash 729433995, now seen corresponding path program 1 times [2021-10-21 20:22:05,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:22:05,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992477544] [2021-10-21 20:22:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:22:05,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:22:05,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:22:05,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:22:05,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:22:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:22:10,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:22:10,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:22:55,206 WARN L207 SmtUtils]: Spent 13.39 s on a formula simplification that was a NOOP. DAG size: 29 [2021-10-21 20:23:32,250 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= |c_ULTIMATE.start_y_#res| (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse5 (fp.add c_currentRoundingMode .cse6 .cse6))) (let ((.cse0 (fp.add c_currentRoundingMode .cse5 .cse6))) (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode .cse1 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse0)) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 .cse2) .cse4) .cse4)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse4 .cse4) (fp.sub c_currentRoundingMode .cse2 .cse3)))))))))) (= c_ULTIMATE.start_main_~yc~0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 20:23:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-21 20:23:32,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:23:44,266 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-10-21 20:23:55,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:23:55,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992477544] [2021-10-21 20:23:55,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 12431 column 7: push canceled [2021-10-21 20:23:55,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1591645344] [2021-10-21 20:23:55,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:23:55,926 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 20:23:55,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 20:23:55,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 20:23:55,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-21 20:24:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:24:08,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:24:08,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:24:08,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function ~yn~0 is already defined. [2021-10-21 20:24:08,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094194765] [2021-10-21 20:24:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:24:08,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:24:08,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:24:08,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:24:08,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:26:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:04,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-21 20:26:04,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:04,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Function ~yn~0 is already defined. [2021-10-21 20:26:04,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:04,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 20:26:04,997 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 20:26:04,997 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 20:26:05,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:05,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:26:05,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-10-21 20:26:05,621 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2021-10-21 20:26:05,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2021-10-21 20:26:05,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:05,698 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:26:05,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:26:05 BoogieIcfgContainer [2021-10-21 20:26:05,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:26:05,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:26:05,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:26:05,719 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:26:05,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:59" (3/4) ... [2021-10-21 20:26:05,723 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:26:05,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:26:05,725 INFO L168 Benchmark]: Toolchain (without parser) took 310858.74 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 53.8 MB in the beginning and 52.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:05,731 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:05,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.50 ms. Allocated memory is still 69.2 MB. Free memory was 53.6 MB in the beginning and 43.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:05,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.22 ms. Allocated memory is still 69.2 MB. Free memory was 43.1 MB in the beginning and 52.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:05,734 INFO L168 Benchmark]: Boogie Preprocessor took 49.13 ms. Allocated memory is still 69.2 MB. Free memory was 52.6 MB in the beginning and 51.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:05,735 INFO L168 Benchmark]: RCFGBuilder took 4274.05 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 41.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:05,736 INFO L168 Benchmark]: TraceAbstraction took 306111.46 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 40.9 MB in the beginning and 52.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:05,740 INFO L168 Benchmark]: Witness Printer took 4.12 ms. Allocated memory is still 83.9 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:05,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.50 ms. Allocated memory is still 69.2 MB. Free memory was 53.6 MB in the beginning and 43.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.22 ms. Allocated memory is still 69.2 MB. Free memory was 43.1 MB in the beginning and 52.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.13 ms. Allocated memory is still 69.2 MB. Free memory was 52.6 MB in the beginning and 51.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4274.05 ms. Allocated memory is still 69.2 MB. Free memory was 51.4 MB in the beginning and 41.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 306111.46 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 40.9 MB in the beginning and 52.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.12 ms. Allocated memory is still 83.9 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 [L18] yn += ui [L19] return yn; [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 [L39] COND TRUE i<120 [L18] yn += ui [L19] return yn; [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L8] COND FALSE !(!(cond)) [L39] i++ [L39] COND TRUE i<120 [L18] yn += ui [L19] return yn; [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 306017.9ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 11.5ms, AutomataDifference: 19513.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 30 SDslu, 47 SDs, 0 SdLazy, 22 SolverSat, 4 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 16547.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 28274.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.7ms SsaConstructionTime, 3125.1ms SatisfiabilityAnalysisTime, 42867.5ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 9 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-10-21 20:26:05,972 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-21 20:26:06,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a234a3e7-ccff-4492-b3f3-4428d5e7ba6c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...