./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3 --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 526c1eaba1ce68b31ca010072f1cb0b80f604635 ..................................................................................................................................................................................................................................................................................... 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_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3 --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 526c1eaba1ce68b31ca010072f1cb0b80f604635 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-5709675 [2021-10-15 20:05:55,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:05:55,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:05:55,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:05:55,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:05:55,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:05:55,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:05:55,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:05:55,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:05:55,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:05:55,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:05:55,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:05:55,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:05:55,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:05:55,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:05:55,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:05:55,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:05:55,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:05:55,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:05:55,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:05:55,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:05:55,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:05:55,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:05:55,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:05:55,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:05:55,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:05:55,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:05:55,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:05:55,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:05:55,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:05:55,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:05:55,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:05:55,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:05:55,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:05:55,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:05:55,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:05:55,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:05:55,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:05:55,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:05:55,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:05:55,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:05:55,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:05:55,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:05:55,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:05:55,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:05:55,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:05:55,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:05:55,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:05:55,331 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:05:55,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:05:55,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:05:55,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:05:55,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:05:55,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:05:55,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:05:55,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:05:55,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:05:55,335 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:05:55,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:05:55,336 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:05:55,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:05:55,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:05:55,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:05:55,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:05:55,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:05:55,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:05:55,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:05:55,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:05:55,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:05:55,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:05:55,340 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:05:55,341 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:05:55,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:05:55,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:05:55,342 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_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526c1eaba1ce68b31ca010072f1cb0b80f604635 [2021-10-15 20:05:55,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:05:55,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:05:55,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:05:55,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:05:55,791 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:05:55,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-15 20:05:55,889 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data/ba63d516a/f6327ad4feaa4a6ab2d59c686366d588/FLAGc043b15c5 [2021-10-15 20:05:56,525 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:05:56,527 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-15 20:05:56,542 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data/ba63d516a/f6327ad4feaa4a6ab2d59c686366d588/FLAGc043b15c5 [2021-10-15 20:05:56,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data/ba63d516a/f6327ad4feaa4a6ab2d59c686366d588 [2021-10-15 20:05:56,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:05:56,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:05:56,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:05:56,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:05:56,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:05:56,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:05:56" (1/1) ... [2021-10-15 20:05:56,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f69baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:56, skipping insertion in model container [2021-10-15 20:05:56,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:05:56" (1/1) ... [2021-10-15 20:05:56,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:05:56,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:05:57,173 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_f0df44e6-d3e7-49e5-bdfc-332407647f1a/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-15 20:05:57,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:05:57,250 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:05:57,271 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_f0df44e6-d3e7-49e5-bdfc-332407647f1a/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-15 20:05:57,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:05:57,323 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:05:57,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57 WrapperNode [2021-10-15 20:05:57,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:05:57,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:05:57,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:05:57,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:05:57,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:05:57,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:05:57,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:05:57,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:05:57,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:05:57,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:05:57,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:05:57,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:05:57,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (1/1) ... [2021-10-15 20:05:57,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:05:57,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:05:57,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:05:57,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:05:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:05:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:05:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:05:57,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:05:57,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:05:57,993 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-15 20:05:57,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:05:57 BoogieIcfgContainer [2021-10-15 20:05:57,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:05:58,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:05:58,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:05:58,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:05:58,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:05:56" (1/3) ... [2021-10-15 20:05:58,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af7144e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:05:58, skipping insertion in model container [2021-10-15 20:05:58,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:05:57" (2/3) ... [2021-10-15 20:05:58,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af7144e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:05:58, skipping insertion in model container [2021-10-15 20:05:58,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:05:57" (3/3) ... [2021-10-15 20:05:58,023 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound1.c [2021-10-15 20:05:58,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:05:58,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-15 20:05:58,158 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:05:58,167 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, mConcurrency=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 [2021-10-15 20:05:58,167 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 20:05:58,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 40 transitions, 80 flow [2021-10-15 20:05:58,227 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2021-10-15 20:05:58,228 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:05:58,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 40 events. 9/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:05:58,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 40 transitions, 80 flow [2021-10-15 20:05:58,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 35 transitions, 70 flow [2021-10-15 20:05:58,253 INFO L129 PetriNetUnfolder]: 3/13 cut-off events. [2021-10-15 20:05:58,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:05:58,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:05:58,257 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-15 20:05:58,258 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 20:05:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:05:58,269 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-15 20:05:58,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:05:58,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946230543] [2021-10-15 20:05:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:05:58,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:05:58,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 20:05:58,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523474886] [2021-10-15 20:05:58,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:05:58,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:05:58,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:05:58,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:05:58,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:05:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:05:58,589 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:05:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:05:58,636 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:05:58,639 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:05:58,640 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:05:58,643 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:05:58,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:05:58,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:05:58,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:05:58,645 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:05:58,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:05:58,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:05:58,872 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:05:58,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:05:58 BoogieIcfgContainer [2021-10-15 20:05:58,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:05:58,907 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:05:58,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:05:58,909 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:05:58,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:05:57" (3/4) ... [2021-10-15 20:05:58,915 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:05:58,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:05:58,918 INFO L168 Benchmark]: Toolchain (without parser) took 2056.83 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 48.3 MB in the beginning and 76.6 MB in the end (delta: -28.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:05:58,920 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 86.0 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:05:58,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.13 ms. Allocated memory is still 86.0 MB. Free memory was 48.1 MB in the beginning and 61.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:05:58,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.74 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 59.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:05:58,929 INFO L168 Benchmark]: Boogie Preprocessor took 60.31 ms. Allocated memory is still 86.0 MB. Free memory was 59.4 MB in the beginning and 58.5 MB in the end (delta: 936.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:05:58,938 INFO L168 Benchmark]: RCFGBuilder took 525.22 ms. Allocated memory is still 86.0 MB. Free memory was 58.2 MB in the beginning and 48.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:05:58,940 INFO L168 Benchmark]: TraceAbstraction took 891.73 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.8 MB in the beginning and 77.3 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:05:58,941 INFO L168 Benchmark]: Witness Printer took 8.96 ms. Allocated memory is still 104.9 MB. Free memory was 77.3 MB in the beginning and 76.6 MB in the end (delta: 668.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:05:58,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 86.0 MB. Free memory is still 64.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 461.13 ms. Allocated memory is still 86.0 MB. Free memory was 48.1 MB in the beginning and 61.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.74 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 59.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.31 ms. Allocated memory is still 86.0 MB. Free memory was 59.4 MB in the beginning and 58.5 MB in the end (delta: 936.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 525.22 ms. Allocated memory is still 86.0 MB. Free memory was 58.2 MB in the beginning and 48.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 891.73 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.8 MB in the beginning and 77.3 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 8.96 ms. Allocated memory is still 104.9 MB. Free memory was 77.3 MB in the beginning and 76.6 MB in the end (delta: 668.9 kB). 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 714.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 82.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred 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: 9.0ms SsaConstructionTime, 57.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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 [2021-10-15 20:05:59,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:06:02,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:06:02,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:06:02,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:06:02,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:06:02,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:06:02,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:06:02,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:06:02,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:06:02,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:06:02,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:06:02,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:06:02,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:06:02,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:06:02,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:06:02,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:06:02,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:06:02,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:06:02,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:06:02,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:06:02,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:06:02,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:06:02,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:06:02,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:06:02,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:06:02,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:06:02,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:06:02,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:06:02,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:06:02,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:06:02,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:06:02,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:06:02,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:06:02,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:06:02,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:06:02,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:06:02,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:06:02,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:06:02,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:06:02,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:06:02,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:06:02,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:06:02,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:06:02,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:06:02,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:06:02,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:06:02,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:06:02,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:06:02,477 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:06:02,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:06:02,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:06:02,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:06:02,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:06:02,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:06:02,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:06:02,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:06:02,481 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:06:02,482 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:06:02,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:06:02,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:06:02,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:06:02,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:06:02,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:06:02,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:06:02,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:06:02,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:06:02,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:06:02,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:06:02,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:06:02,486 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:06:02,486 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:06:02,487 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:06:02,487 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:06:02,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:06:02,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:06:02,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:06:02,489 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_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526c1eaba1ce68b31ca010072f1cb0b80f604635 [2021-10-15 20:06:02,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:06:03,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:06:03,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:06:03,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:06:03,029 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:06:03,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-15 20:06:03,110 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data/4ac04a713/73fd3d6c93cc4608aa5e298281d6a222/FLAGaeb1acbba [2021-10-15 20:06:03,878 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:06:03,879 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-15 20:06:03,889 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data/4ac04a713/73fd3d6c93cc4608aa5e298281d6a222/FLAGaeb1acbba [2021-10-15 20:06:04,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/data/4ac04a713/73fd3d6c93cc4608aa5e298281d6a222 [2021-10-15 20:06:04,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:06:04,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:06:04,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:06:04,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:06:04,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:06:04,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c80933a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04, skipping insertion in model container [2021-10-15 20:06:04,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:06:04,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:06:04,480 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_f0df44e6-d3e7-49e5-bdfc-332407647f1a/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-15 20:06:04,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:06:04,557 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:06:04,598 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_f0df44e6-d3e7-49e5-bdfc-332407647f1a/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-15 20:06:04,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:06:04,687 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:06:04,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04 WrapperNode [2021-10-15 20:06:04,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:06:04,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:06:04,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:06:04,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:06:04,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:06:04,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:06:04,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:06:04,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:06:04,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:06:04,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:06:04,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:06:04,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:06:04,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (1/1) ... [2021-10-15 20:06:04,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:06:04,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:06:04,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:06:04,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:06:04,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:06:04,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:06:04,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:06:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:06:17,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:06:17,700 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-15 20:06:17,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:17 BoogieIcfgContainer [2021-10-15 20:06:17,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:06:17,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:06:17,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:06:17,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:06:17,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:06:04" (1/3) ... [2021-10-15 20:06:17,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3082dd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:06:17, skipping insertion in model container [2021-10-15 20:06:17,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:06:04" (2/3) ... [2021-10-15 20:06:17,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3082dd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:06:17, skipping insertion in model container [2021-10-15 20:06:17,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:17" (3/3) ... [2021-10-15 20:06:17,714 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound1.c [2021-10-15 20:06:17,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:06:17,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-15 20:06:17,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:06:17,792 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, mConcurrency=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 [2021-10-15 20:06:17,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 20:06:17,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 40 transitions, 80 flow [2021-10-15 20:06:17,837 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2021-10-15 20:06:17,838 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:17,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 40 events. 9/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:06:17,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 40 transitions, 80 flow [2021-10-15 20:06:17,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 35 transitions, 70 flow [2021-10-15 20:06:17,851 INFO L129 PetriNetUnfolder]: 3/13 cut-off events. [2021-10-15 20:06:17,851 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:17,852 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:17,853 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-15 20:06:17,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 20:06:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:17,860 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-15 20:06:17,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:06:17,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795640932] [2021-10-15 20:06:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:17,878 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:06:17,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:06:17,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:06:17,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:06:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:06:18,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:06:18,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:06:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:18,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:06:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:06:27,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:06:27,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795640932] [2021-10-15 20:06:27,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795640932] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:06:27,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:06:27,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-15 20:06:27,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444272110] [2021-10-15 20:06:27,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:06:27,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:06:27,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:06:27,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:06:27,321 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2021-10-15 20:06:27,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 35 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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) [2021-10-15 20:06:27,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:06:27,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2021-10-15 20:06:27,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:06:58,434 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2021-10-15 20:06:58,435 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:06:58,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 41 events. 3/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 8/42 useless extension candidates. Maximal degree in co-relation 2. Up to 15 conditions per place. [2021-10-15 20:06:58,438 INFO L132 encePairwiseOnDemand]: 19/40 looper letters, 11 selfloop transitions, 19 changer transitions 0/38 dead transitions. [2021-10-15 20:06:58,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 136 flow [2021-10-15 20:06:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:06:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:06:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2021-10-15 20:06:58,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.41785714285714287 [2021-10-15 20:06:58,452 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 117 transitions. [2021-10-15 20:06:58,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 117 transitions. [2021-10-15 20:06:58,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:06:58,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 117 transitions. [2021-10-15 20:06:58,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2021-10-15 20:06:58,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 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) [2021-10-15 20:06:58,468 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 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) [2021-10-15 20:06:58,470 INFO L186 Difference]: Start difference. First operand has 28 places, 35 transitions, 70 flow. Second operand 7 states and 117 transitions. [2021-10-15 20:06:58,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 136 flow [2021-10-15 20:06:58,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:06:58,478 INFO L242 Difference]: Finished difference. Result has 36 places, 37 transitions, 138 flow [2021-10-15 20:06:58,480 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2021-10-15 20:06:58,481 INFO L334 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2021-10-15 20:06:58,481 INFO L470 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 138 flow [2021-10-15 20:06:58,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 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) [2021-10-15 20:06:58,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:06:58,482 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:06:58,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:06:58,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:06:58,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 20:06:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:06:58,706 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-15 20:06:58,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:06:58,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412532574] [2021-10-15 20:06:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:06:58,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:06:58,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:06:58,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:06:58,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 20:07:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:07:01,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 20:07:01,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:07:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:04,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:07:10,677 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-15 20:07:12,722 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-15 20:07:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:07:34,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:07:34,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412532574] [2021-10-15 20:07:34,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412532574] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:07:34,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:07:34,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-15 20:07:34,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879806573] [2021-10-15 20:07:34,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:07:34,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:07:34,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:07:34,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-10-15 20:07:34,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2021-10-15 20:07:34,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 138 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 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) [2021-10-15 20:07:34,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:07:34,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2021-10-15 20:07:34,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:07:47,376 WARN L207 SmtUtils]: Spent 6.60 s on a formula simplification that was a NOOP. DAG size: 14 [2021-10-15 20:07:52,895 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-10-15 20:07:56,055 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-15 20:08:58,718 INFO L129 PetriNetUnfolder]: 3/42 cut-off events. [2021-10-15 20:08:58,719 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-10-15 20:08:58,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 42 events. 3/42 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 57. Up to 15 conditions per place. [2021-10-15 20:08:58,720 INFO L132 encePairwiseOnDemand]: 26/40 looper letters, 10 selfloop transitions, 20 changer transitions 0/38 dead transitions. [2021-10-15 20:08:58,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 203 flow [2021-10-15 20:08:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:08:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 20:08:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2021-10-15 20:08:58,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.365625 [2021-10-15 20:08:58,726 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 117 transitions. [2021-10-15 20:08:58,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 117 transitions. [2021-10-15 20:08:58,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:08:58,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 117 transitions. [2021-10-15 20:08:58,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 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) [2021-10-15 20:08:58,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 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) [2021-10-15 20:08:58,734 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 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) [2021-10-15 20:08:58,734 INFO L186 Difference]: Start difference. First operand has 36 places, 37 transitions, 138 flow. Second operand 8 states and 117 transitions. [2021-10-15 20:08:58,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 203 flow [2021-10-15 20:08:58,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:08:58,742 INFO L242 Difference]: Finished difference. Result has 44 places, 38 transitions, 213 flow [2021-10-15 20:08:58,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2021-10-15 20:08:58,744 INFO L334 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2021-10-15 20:08:58,744 INFO L470 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 213 flow [2021-10-15 20:08:58,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 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) [2021-10-15 20:08:58,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:08:58,745 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:08:58,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 20:08:58,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:08:58,947 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 20:08:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:08:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-10-15 20:08:58,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:08:58,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947213419] [2021-10-15 20:08:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:08:58,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:08:58,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:08:58,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:08:58,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 20:08:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:08:59,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 20:08:59,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:08:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:08:59,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:08:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:08:59,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:08:59,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947213419] [2021-10-15 20:08:59,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947213419] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:08:59,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:08:59,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 20:08:59,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088018837] [2021-10-15 20:08:59,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:08:59,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:08:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:08:59,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:08:59,970 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 40 [2021-10-15 20:08:59,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 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) [2021-10-15 20:08:59,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:08:59,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 40 [2021-10-15 20:08:59,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:09:01,889 INFO L129 PetriNetUnfolder]: 2/34 cut-off events. [2021-10-15 20:09:01,889 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-10-15 20:09:01,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 34 events. 2/34 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2021-10-15 20:09:01,891 INFO L132 encePairwiseOnDemand]: 36/40 looper letters, 4 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2021-10-15 20:09:01,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 191 flow [2021-10-15 20:09:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:09:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:09:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2021-10-15 20:09:01,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-10-15 20:09:01,894 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2021-10-15 20:09:01,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2021-10-15 20:09:01,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:09:01,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2021-10-15 20:09:01,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-10-15 20:09:01,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-10-15 20:09:01,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-10-15 20:09:01,900 INFO L186 Difference]: Start difference. First operand has 44 places, 38 transitions, 213 flow. Second operand 4 states and 120 transitions. [2021-10-15 20:09:01,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 191 flow [2021-10-15 20:09:01,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 156 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-10-15 20:09:01,905 INFO L242 Difference]: Finished difference. Result has 41 places, 34 transitions, 156 flow [2021-10-15 20:09:01,906 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2021-10-15 20:09:01,906 INFO L334 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2021-10-15 20:09:01,906 INFO L470 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 156 flow [2021-10-15 20:09:01,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 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) [2021-10-15 20:09:01,907 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:09:01,907 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:09:01,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 20:09:02,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:09:02,128 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 20:09:02,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:09:02,129 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-15 20:09:02,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:09:02,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961635831] [2021-10-15 20:09:02,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:09:02,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:09:02,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:09:02,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:09:02,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 20:09:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:09:04,087 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:09:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:09:06,059 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-15 20:09:06,060 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:09:06,061 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:09:06,063 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:09:06,064 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:09:06,064 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:09:06,065 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:09:06,065 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:09:06,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 20:09:06,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:09:06,273 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:09:06,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:09:06 BoogieIcfgContainer [2021-10-15 20:09:06,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:09:06,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:09:06,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:09:06,304 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:09:06,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:06:17" (3/4) ... [2021-10-15 20:09:06,307 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 20:09:06,357 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:09:06,358 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:09:06,359 INFO L168 Benchmark]: Toolchain (without parser) took 182153.40 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 31.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:06,360 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:09:06,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.82 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 43.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:06,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.45 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:09:06,362 INFO L168 Benchmark]: Boogie Preprocessor took 55.80 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 40.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:06,363 INFO L168 Benchmark]: RCFGBuilder took 12883.86 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 41.5 MB in the end (delta: -1.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:06,364 INFO L168 Benchmark]: TraceAbstraction took 168598.20 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 33.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:06,365 INFO L168 Benchmark]: Witness Printer took 54.23 ms. Allocated memory is still 60.8 MB. Free memory was 33.2 MB in the beginning and 31.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:09:06,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 50.3 MB. Free memory was 31.7 MB in the beginning and 31.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 479.82 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 43.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.45 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.80 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 40.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12883.86 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 41.5 MB in the end (delta: -1.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 168598.20 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 33.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Witness Printer took 54.23 ms. Allocated memory is still 60.8 MB. Free memory was 33.2 MB in the beginning and 31.1 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: - 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 168493.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 117573.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 54.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 42 SDslu, 34 SDs, 0 SdLazy, 111 SolverSat, 22 SolverUnsat, 35 SolverUnknown, 0 SolverNotchecked, 95454.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 40063.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=2, InterpolantAutomatonStates: 19, 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: 63.5ms SsaConstructionTime, 4901.9ms SatisfiabilityAnalysisTime, 42790.5ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 1 QuantifiedInterpolants, 310 SizeOfPredicates, 10 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be incorrect! [2021-10-15 20:09:06,601 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-15 20:09:06,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0df44e6-d3e7-49e5-bdfc-332407647f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...