./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1052b.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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/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 cc877de57a66c963d01f9b35f68134e8e891b009 ................................................................................................................................................................................................................................................................................................................................ 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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/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 cc877de57a66c963d01f9b35f68134e8e891b009 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:46:55,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:46:55,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:46:55,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:46:55,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:46:55,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:46:55,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:46:55,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:46:55,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:46:55,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:46:55,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:46:55,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:46:55,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:46:55,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:46:55,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:46:55,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:46:55,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:46:55,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:46:55,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:46:55,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:46:55,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:46:55,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:46:55,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:46:55,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:46:55,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:46:55,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:46:55,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:46:55,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:46:55,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:46:55,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:46:55,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:46:55,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:46:55,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:46:55,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:46:55,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:46:55,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:46:55,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:46:55,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:46:55,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:46:55,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:46:55,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:46:55,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:46:55,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:46:55,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:46:55,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:46:55,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:46:55,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:46:55,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:46:55,474 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:46:55,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:46:55,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:46:55,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:46:55,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:46:55,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:46:55,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:46:55,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:46:55,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:46:55,478 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:46:55,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:46:55,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:46:55,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:46:55,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:46:55,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:46:55,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:46:55,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:46:55,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:46:55,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:46:55,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:46:55,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:46:55,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:46:55,482 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:46:55,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:46:55,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:46:55,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:46:55,484 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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc877de57a66c963d01f9b35f68134e8e891b009 [2021-10-15 19:46:55,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:46:55,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:46:55,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:46:55,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:46:55,961 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:46:55,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_1052b.c [2021-10-15 19:46:56,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data/a39bb66a3/d41e0ca5cb234088934c5301431927f0/FLAGa2a1fc5be [2021-10-15 19:46:56,706 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:46:56,712 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/sv-benchmarks/c/float-newlib/float_req_bl_1052b.c [2021-10-15 19:46:56,721 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data/a39bb66a3/d41e0ca5cb234088934c5301431927f0/FLAGa2a1fc5be [2021-10-15 19:46:57,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data/a39bb66a3/d41e0ca5cb234088934c5301431927f0 [2021-10-15 19:46:57,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:46:57,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:46:57,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:46:57,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:46:57,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:46:57,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd2ca1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57, skipping insertion in model container [2021-10-15 19:46:57,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:46:57,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:46:57,319 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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/sv-benchmarks/c/float-newlib/float_req_bl_1052b.c[1778,1791] [2021-10-15 19:46:57,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:46:57,337 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:46:57,380 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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/sv-benchmarks/c/float-newlib/float_req_bl_1052b.c[1778,1791] [2021-10-15 19:46:57,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:46:57,396 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:46:57,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57 WrapperNode [2021-10-15 19:46:57,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:46:57,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:46:57,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:46:57,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:46:57,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:46:57,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:46:57,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:46:57,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:46:57,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:46:57,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:46:57,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:46:57,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:46:57,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (1/1) ... [2021-10-15 19:46:57,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:46:57,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:57,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:46:57,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:46:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:46:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:46:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 19:46:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:46:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 19:46:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:46:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:46:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:46:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:46:58,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:46:58,037 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-15 19:46:58,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:46:58 BoogieIcfgContainer [2021-10-15 19:46:58,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:46:58,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:46:58,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:46:58,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:46:58,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:46:57" (1/3) ... [2021-10-15 19:46:58,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d003e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:46:58, skipping insertion in model container [2021-10-15 19:46:58,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:57" (2/3) ... [2021-10-15 19:46:58,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d003e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:46:58, skipping insertion in model container [2021-10-15 19:46:58,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:46:58" (3/3) ... [2021-10-15 19:46:58,050 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052b.c [2021-10-15 19:46:58,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:46:58,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:46:58,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:46:58,160 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 19:46:58,160 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:46:58,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 44 transitions, 88 flow [2021-10-15 19:46:58,240 INFO L129 PetriNetUnfolder]: 16/44 cut-off events. [2021-10-15 19:46:58,242 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:58,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 44 events. 16/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-15 19:46:58,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 44 transitions, 88 flow [2021-10-15 19:46:58,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 40 transitions, 80 flow [2021-10-15 19:46:58,267 INFO L129 PetriNetUnfolder]: 15/39 cut-off events. [2021-10-15 19:46:58,269 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:58,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:58,271 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:58,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:46:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:58,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2064187560, now seen corresponding path program 1 times [2021-10-15 19:46:58,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:58,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292968367] [2021-10-15 19:46:58,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:58,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:58,571 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 19:46:58,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:58,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292968367] [2021-10-15 19:46:58,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292968367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:58,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:58,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:46:58,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312367853] [2021-10-15 19:46:58,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:46:58,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:46:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:46:58,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 44 [2021-10-15 19:46:58,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 40 transitions, 80 flow. Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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 19:46:58,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:58,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 44 [2021-10-15 19:46:58,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:58,662 INFO L129 PetriNetUnfolder]: 9/34 cut-off events. [2021-10-15 19:46:58,663 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:58,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 34 events. 9/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 6/31 useless extension candidates. Maximal degree in co-relation 34. Up to 6 conditions per place. [2021-10-15 19:46:58,668 INFO L132 encePairwiseOnDemand]: 38/44 looper letters, 0 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2021-10-15 19:46:58,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 34 transitions, 68 flow [2021-10-15 19:46:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:46:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:46:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2021-10-15 19:46:58,689 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9090909090909091 [2021-10-15 19:46:58,691 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 80 transitions. [2021-10-15 19:46:58,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 80 transitions. [2021-10-15 19:46:58,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:58,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 80 transitions. [2021-10-15 19:46:58,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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 19:46:58,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 19:46:58,714 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 19:46:58,717 INFO L186 Difference]: Start difference. First operand has 26 places, 40 transitions, 80 flow. Second operand 2 states and 80 transitions. [2021-10-15 19:46:58,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 34 transitions, 68 flow [2021-10-15 19:46:58,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 34 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:46:58,727 INFO L242 Difference]: Finished difference. Result has 27 places, 34 transitions, 68 flow [2021-10-15 19:46:58,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=34} [2021-10-15 19:46:58,731 INFO L334 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-10-15 19:46:58,732 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 34 transitions, 68 flow [2021-10-15 19:46:58,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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 19:46:58,733 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:58,733 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:58,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:46:58,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:46:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:58,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1026834198, now seen corresponding path program 1 times [2021-10-15 19:46:58,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:58,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223436472] [2021-10-15 19:46:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:58,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:46:58,915 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:46:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:46:59,003 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:46:59,003 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:46:59,006 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:46:59,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:46:59,016 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:46:59,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:46:59 BoogieIcfgContainer [2021-10-15 19:46:59,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:46:59,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:46:59,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:46:59,050 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:46:59,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:46:58" (3/4) ... [2021-10-15 19:46:59,054 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:46:59,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:46:59,057 INFO L168 Benchmark]: Toolchain (without parser) took 2048.87 ms. Allocated memory is still 121.6 MB. Free memory was 83.8 MB in the beginning and 50.3 MB in the end (delta: 33.5 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:59,058 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 121.6 MB. Free memory is still 100.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:46:59,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.33 ms. Allocated memory is still 121.6 MB. Free memory was 83.6 MB in the beginning and 95.4 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:59,060 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 121.6 MB. Free memory was 95.4 MB in the beginning and 93.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:46:59,061 INFO L168 Benchmark]: Boogie Preprocessor took 76.86 ms. Allocated memory is still 121.6 MB. Free memory was 93.9 MB in the beginning and 92.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:59,062 INFO L168 Benchmark]: RCFGBuilder took 512.60 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 80.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:59,063 INFO L168 Benchmark]: TraceAbstraction took 1007.08 ms. Allocated memory is still 121.6 MB. Free memory was 79.7 MB in the beginning and 50.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:59,064 INFO L168 Benchmark]: Witness Printer took 5.69 ms. Allocated memory is still 121.6 MB. Free memory was 50.9 MB in the beginning and 50.3 MB in the end (delta: 547.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:46:59,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 121.6 MB. Free memory is still 100.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.33 ms. Allocated memory is still 121.6 MB. Free memory was 83.6 MB in the beginning and 95.4 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 121.6 MB. Free memory was 95.4 MB in the beginning and 93.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.86 ms. Allocated memory is still 121.6 MB. Free memory was 93.9 MB in the beginning and 92.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 512.60 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 80.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1007.08 ms. Allocated memory is still 121.6 MB. Free memory was 79.7 MB in the beginning and 50.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.69 ms. Allocated memory is still 121.6 MB. Free memory was 50.9 MB in the beginning and 50.3 MB in the end (delta: 547.9 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: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 77, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; VAL [huge_floor=1000000000000000000000000000000] [L77] float x = -1.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) VAL [huge_floor=1000000000000000000000000000000] [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_floor=1000000000000000000000000000000] [L78] float res = floor_float(x); [L60] __int32_t ix; VAL [huge_floor=1000000000000000000000000000000] [L62] ieee_float_shape_type gf_u; [L63] gf_u.value = (x) [L64] EXPR gf_u.word [L64] (ix) = gf_u.word [L66] ix &= 0x7fffffff [L67] return ((ix) == 0x7f800000L); VAL [huge_floor=1000000000000000000000000000000] [L81] COND TRUE !isinf_float(res) [L82] reach_error() VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 884.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 122.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 99.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 2, 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: 13.4ms SsaConstructionTime, 211.6ms SatisfiabilityAnalysisTime, 96.2ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 19:46:59,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:47:02,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:47:02,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:47:02,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:47:02,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:47:02,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:47:02,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:47:02,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:47:02,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:47:02,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:47:02,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:47:02,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:47:02,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:47:02,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:47:02,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:47:02,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:47:02,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:47:02,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:47:02,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:47:02,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:47:02,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:47:02,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:47:02,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:47:02,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:47:02,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:47:02,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:47:02,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:47:02,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:47:02,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:47:02,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:47:02,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:47:02,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:47:02,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:47:02,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:47:02,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:47:02,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:47:02,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:47:02,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:47:02,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:47:02,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:47:02,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:47:02,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:47:02,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:47:02,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:47:02,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:47:02,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:47:02,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:47:02,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:47:02,631 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:47:02,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:47:02,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:47:02,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:47:02,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:47:02,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:47:02,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:47:02,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:47:02,635 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:47:02,635 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:47:02,635 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:47:02,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:47:02,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:47:02,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:47:02,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:47:02,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:47:02,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:47:02,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:47:02,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:47:02,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:47:02,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:47:02,639 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:47:02,639 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:47:02,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:47:02,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:47:02,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:47:02,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:47:02,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:47:02,641 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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc877de57a66c963d01f9b35f68134e8e891b009 [2021-10-15 19:47:03,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:47:03,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:47:03,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:47:03,214 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:47:03,215 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:47:03,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_1052b.c [2021-10-15 19:47:03,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data/03f0aa047/b88f4bbaefa94d6b84e1a8c8863e0d66/FLAG70ebeec8f [2021-10-15 19:47:03,993 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:47:03,994 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/sv-benchmarks/c/float-newlib/float_req_bl_1052b.c [2021-10-15 19:47:04,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data/03f0aa047/b88f4bbaefa94d6b84e1a8c8863e0d66/FLAG70ebeec8f [2021-10-15 19:47:04,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/data/03f0aa047/b88f4bbaefa94d6b84e1a8c8863e0d66 [2021-10-15 19:47:04,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:47:04,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:47:04,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:47:04,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:47:04,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:47:04,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d9a79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04, skipping insertion in model container [2021-10-15 19:47:04,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:47:04,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:47:04,690 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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/sv-benchmarks/c/float-newlib/float_req_bl_1052b.c[1778,1791] [2021-10-15 19:47:04,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:47:04,711 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:47:04,744 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_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/sv-benchmarks/c/float-newlib/float_req_bl_1052b.c[1778,1791] [2021-10-15 19:47:04,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:47:04,767 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:47:04,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04 WrapperNode [2021-10-15 19:47:04,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:47:04,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:47:04,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:47:04,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:47:04,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:47:04,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:47:04,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:47:04,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:47:04,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:47:04,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:47:04,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:47:04,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:47:04,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (1/1) ... [2021-10-15 19:47:04,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:47:04,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:47:04,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:47:05,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:47:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:47:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:47:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-15 19:47:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:47:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:47:05,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:47:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-15 19:47:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:47:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:47:06,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:47:06,083 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-15 19:47:06,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:47:06 BoogieIcfgContainer [2021-10-15 19:47:06,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:47:06,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:47:06,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:47:06,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:47:06,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:47:04" (1/3) ... [2021-10-15 19:47:06,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef95005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:47:06, skipping insertion in model container [2021-10-15 19:47:06,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:47:04" (2/3) ... [2021-10-15 19:47:06,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef95005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:47:06, skipping insertion in model container [2021-10-15 19:47:06,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:47:06" (3/3) ... [2021-10-15 19:47:06,100 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052b.c [2021-10-15 19:47:06,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:47:06,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:47:06,180 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:47:06,189 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 19:47:06,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:47:06,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 44 transitions, 88 flow [2021-10-15 19:47:06,235 INFO L129 PetriNetUnfolder]: 16/44 cut-off events. [2021-10-15 19:47:06,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:47:06,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 44 events. 16/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-15 19:47:06,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 44 transitions, 88 flow [2021-10-15 19:47:06,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 40 transitions, 80 flow [2021-10-15 19:47:06,254 INFO L129 PetriNetUnfolder]: 15/39 cut-off events. [2021-10-15 19:47:06,254 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:47:06,254 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:47:06,255 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:06,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:47:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:06,264 INFO L82 PathProgramCache]: Analyzing trace with hash -2064187560, now seen corresponding path program 1 times [2021-10-15 19:47:06,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:47:06,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059493341] [2021-10-15 19:47:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:06,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:47:06,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:47:06,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:47:06,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:47:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:06,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:47:06,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:06,606 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 19:47:06,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:47:06,672 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 19:47:06,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:47:06,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059493341] [2021-10-15 19:47:06,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059493341] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:06,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:06,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:47:06,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113082425] [2021-10-15 19:47:06,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:47:06,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:47:06,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:47:06,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:47:06,726 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 44 [2021-10-15 19:47:06,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 40 transitions, 80 flow. Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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 19:47:06,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:47:06,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 44 [2021-10-15 19:47:06,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:47:06,759 INFO L129 PetriNetUnfolder]: 9/34 cut-off events. [2021-10-15 19:47:06,760 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:47:06,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 34 events. 9/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 6/31 useless extension candidates. Maximal degree in co-relation 34. Up to 6 conditions per place. [2021-10-15 19:47:06,763 INFO L132 encePairwiseOnDemand]: 38/44 looper letters, 0 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2021-10-15 19:47:06,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 34 transitions, 68 flow [2021-10-15 19:47:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:47:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:47:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2021-10-15 19:47:06,780 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9090909090909091 [2021-10-15 19:47:06,781 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 80 transitions. [2021-10-15 19:47:06,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 80 transitions. [2021-10-15 19:47:06,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:47:06,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 80 transitions. [2021-10-15 19:47:06,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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 19:47:06,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 19:47:06,802 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 19:47:06,805 INFO L186 Difference]: Start difference. First operand has 26 places, 40 transitions, 80 flow. Second operand 2 states and 80 transitions. [2021-10-15 19:47:06,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 34 transitions, 68 flow [2021-10-15 19:47:06,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 34 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:47:06,815 INFO L242 Difference]: Finished difference. Result has 27 places, 34 transitions, 68 flow [2021-10-15 19:47:06,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=34} [2021-10-15 19:47:06,820 INFO L334 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-10-15 19:47:06,820 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 34 transitions, 68 flow [2021-10-15 19:47:06,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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 19:47:06,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:47:06,822 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:06,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:07,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:47:07,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:47:07,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:07,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1026834198, now seen corresponding path program 1 times [2021-10-15 19:47:07,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:47:07,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122790098] [2021-10-15 19:47:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:07,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:47:07,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:47:07,048 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:47:07,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:47:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:07,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:47:07,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:07,741 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 19:47:07,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:47:08,039 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 19:47:08,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:47:08,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122790098] [2021-10-15 19:47:08,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122790098] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:08,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:08,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-15 19:47:08,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996273919] [2021-10-15 19:47:08,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:47:08,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:47:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:47:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:47:08,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2021-10-15 19:47:08,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 34 transitions, 68 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 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 19:47:08,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:47:08,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2021-10-15 19:47:08,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:47:08,545 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2021-10-15 19:47:08,545 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:47:08,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 34. Up to 8 conditions per place. [2021-10-15 19:47:08,547 INFO L132 encePairwiseOnDemand]: 38/44 looper letters, 7 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-10-15 19:47:08,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 68 flow [2021-10-15 19:47:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:47:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:47:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2021-10-15 19:47:08,552 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2021-10-15 19:47:08,552 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 98 transitions. [2021-10-15 19:47:08,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 98 transitions. [2021-10-15 19:47:08,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:47:08,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 98 transitions. [2021-10-15 19:47:08,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 19:47:08,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 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 19:47:08,558 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 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 19:47:08,559 INFO L186 Difference]: Start difference. First operand has 27 places, 34 transitions, 68 flow. Second operand 5 states and 98 transitions. [2021-10-15 19:47:08,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 68 flow [2021-10-15 19:47:08,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:47:08,562 INFO L242 Difference]: Finished difference. Result has 27 places, 24 transitions, 54 flow [2021-10-15 19:47:08,563 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2021-10-15 19:47:08,563 INFO L334 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-10-15 19:47:08,564 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 54 flow [2021-10-15 19:47:08,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 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 19:47:08,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:47:08,565 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:08,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-15 19:47:08,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:47:08,775 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:47:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:08,777 INFO L82 PathProgramCache]: Analyzing trace with hash -217487572, now seen corresponding path program 1 times [2021-10-15 19:47:08,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:47:08,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302294776] [2021-10-15 19:47:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:08,779 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:47:08,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:47:08,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:47:08,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:47:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:09,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-15 19:47:09,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:09,521 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 19:47:09,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:47:11,531 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 19:47:11,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:47:11,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302294776] [2021-10-15 19:47:11,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302294776] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:11,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:11,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-15 19:47:11,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070793343] [2021-10-15 19:47:11,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-15 19:47:11,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:47:11,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-15 19:47:11,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-10-15 19:47:11,542 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2021-10-15 19:47:11,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 54 flow. Second operand has 15 states, 15 states have (on average 20.2) internal successors, (303), 15 states have internal predecessors, (303), 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 19:47:11,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:47:11,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2021-10-15 19:47:11,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:47:12,375 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2021-10-15 19:47:12,376 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:47:12,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 29 events. 2/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 50. Up to 8 conditions per place. [2021-10-15 19:47:12,377 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 9 selfloop transitions, 3 changer transitions 7/28 dead transitions. [2021-10-15 19:47:12,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 98 flow [2021-10-15 19:47:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:47:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:47:12,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2021-10-15 19:47:12,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2021-10-15 19:47:12,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 190 transitions. [2021-10-15 19:47:12,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 190 transitions. [2021-10-15 19:47:12,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:47:12,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 190 transitions. [2021-10-15 19:47:12,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.11111111111111) internal successors, (190), 9 states have internal predecessors, (190), 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 19:47:12,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 19:47:12,391 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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 19:47:12,391 INFO L186 Difference]: Start difference. First operand has 27 places, 24 transitions, 54 flow. Second operand 9 states and 190 transitions. [2021-10-15 19:47:12,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 98 flow [2021-10-15 19:47:12,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 93 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:47:12,396 INFO L242 Difference]: Finished difference. Result has 37 places, 21 transitions, 59 flow [2021-10-15 19:47:12,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=59, PETRI_PLACES=37, PETRI_TRANSITIONS=21} [2021-10-15 19:47:12,397 INFO L334 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2021-10-15 19:47:12,397 INFO L470 AbstractCegarLoop]: Abstraction has has 37 places, 21 transitions, 59 flow [2021-10-15 19:47:12,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.2) internal successors, (303), 15 states have internal predecessors, (303), 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 19:47:12,398 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:47:12,398 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:47:12,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:12,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:47:12,617 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:47:12,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:47:12,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1158240359, now seen corresponding path program 1 times [2021-10-15 19:47:12,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:47:12,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806172318] [2021-10-15 19:47:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:47:12,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:47:12,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:47:12,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:47:12,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:47:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:47:12,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:47:12,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:47:13,164 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 19:47:13,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:47:13,405 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 19:47:13,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:47:13,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806172318] [2021-10-15 19:47:13,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806172318] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:47:13,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:47:13,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-15 19:47:13,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913732291] [2021-10-15 19:47:13,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:47:13,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:47:13,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:47:13,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:47:13,410 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2021-10-15 19:47:13,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 21 transitions, 59 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:47:13,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:47:13,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2021-10-15 19:47:13,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:47:13,554 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-10-15 19:47:13,554 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:47:13,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 5 events. 0/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-10-15 19:47:13,555 INFO L132 encePairwiseOnDemand]: 40/44 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-10-15 19:47:13,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 5 transitions, 21 flow [2021-10-15 19:47:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:47:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:47:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2021-10-15 19:47:13,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2021-10-15 19:47:13,557 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 74 transitions. [2021-10-15 19:47:13,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 74 transitions. [2021-10-15 19:47:13,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:47:13,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 74 transitions. [2021-10-15 19:47:13,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 19:47:13,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 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 19:47:13,560 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 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 19:47:13,560 INFO L186 Difference]: Start difference. First operand has 37 places, 21 transitions, 59 flow. Second operand 5 states and 74 transitions. [2021-10-15 19:47:13,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 5 transitions, 21 flow [2021-10-15 19:47:13,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 5 transitions, 18 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:47:13,561 INFO L242 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2021-10-15 19:47:13,561 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2021-10-15 19:47:13,561 INFO L334 CegarLoopForPetriNet]: 26 programPoint places, -8 predicate places. [2021-10-15 19:47:13,562 INFO L470 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2021-10-15 19:47:13,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 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 19:47:13,564 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:47:13,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:47:13,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:47:13,771 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:47:13,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:47:13 BoogieIcfgContainer [2021-10-15 19:47:13,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:47:13,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:47:13,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:47:13,776 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:47:13,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:47:06" (3/4) ... [2021-10-15 19:47:13,793 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:47:13,811 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-15 19:47:13,811 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 19:47:13,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:47:13,812 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:47:13,898 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:47:13,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:47:13,900 INFO L168 Benchmark]: Toolchain (without parser) took 9528.20 ms. Allocated memory was 48.2 MB in the beginning and 79.7 MB in the end (delta: 31.5 MB). Free memory was 23.0 MB in the beginning and 35.4 MB in the end (delta: -12.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:13,901 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 48.2 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:47:13,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.29 ms. Allocated memory is still 48.2 MB. Free memory was 22.8 MB in the beginning and 23.0 MB in the end (delta: -159.6 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:13,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.70 ms. Allocated memory is still 48.2 MB. Free memory was 23.0 MB in the beginning and 21.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:47:13,903 INFO L168 Benchmark]: Boogie Preprocessor took 73.99 ms. Allocated memory is still 48.2 MB. Free memory was 21.2 MB in the beginning and 31.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:13,904 INFO L168 Benchmark]: RCFGBuilder took 1162.86 ms. Allocated memory was 48.2 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Free memory was 31.4 MB in the beginning and 47.2 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:13,905 INFO L168 Benchmark]: TraceAbstraction took 7685.02 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 46.7 MB in the beginning and 38.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:13,905 INFO L168 Benchmark]: Witness Printer took 123.41 ms. Allocated memory is still 79.7 MB. Free memory was 38.5 MB in the beginning and 35.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:47:13,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 48.2 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 393.29 ms. Allocated memory is still 48.2 MB. Free memory was 22.8 MB in the beginning and 23.0 MB in the end (delta: -159.6 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.70 ms. Allocated memory is still 48.2 MB. Free memory was 23.0 MB in the beginning and 21.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.99 ms. Allocated memory is still 48.2 MB. Free memory was 21.2 MB in the beginning and 31.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1162.86 ms. Allocated memory was 48.2 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Free memory was 31.4 MB in the beginning and 47.2 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7685.02 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 46.7 MB in the beginning and 38.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * Witness Printer took 123.41 ms. Allocated memory is still 79.7 MB. Free memory was 38.5 MB in the beginning and 35.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7595.6ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1638.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 56.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 59 SDslu, 46 SDs, 0 SdLazy, 96 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 844.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2298.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 21, 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: 72.0ms SsaConstructionTime, 552.9ms SatisfiabilityAnalysisTime, 3988.7ms InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 108 ConstructedInterpolants, 18 QuantifiedInterpolants, 617 SizeOfPredicates, 28 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:47:13,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3aa03c-236b-4999-a9e4-4e673bbb5ac0/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...