./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --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 802be743cfa79430fe29fdc090ef145d830f22b73f5bbaa3ca042d397672c148 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:41:47,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:41:47,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:41:47,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:41:47,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:41:47,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:41:47,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:41:47,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:41:47,344 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:41:47,352 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:41:47,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:41:47,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:41:47,355 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:41:47,357 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:41:47,357 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:41:47,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:41:47,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:41:47,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:41:47,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:41:47,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:41:47,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:41:47,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:41:47,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:41:47,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:41:47,362 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:41:47,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:41:47,363 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:41:47,364 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:41:47,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:41:47,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:41:47,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:41:47,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:41:47,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:41:47,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:41:47,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:41:47,367 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:41:47,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:41:47,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:41:47,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:41:47,368 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:41:47,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:41:47,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:41:47,369 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 802be743cfa79430fe29fdc090ef145d830f22b73f5bbaa3ca042d397672c148 [2023-11-23 21:41:47,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:41:47,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:41:47,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:41:47,703 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:41:47,704 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:41:47,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c [2023-11-23 21:41:50,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:41:51,083 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:41:51,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c [2023-11-23 21:41:51,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/data/6c75b4a41/e6cd96beec394694b9ca9a4ae6d2f2c1/FLAG2bc165c0d [2023-11-23 21:41:51,110 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/data/6c75b4a41/e6cd96beec394694b9ca9a4ae6d2f2c1 [2023-11-23 21:41:51,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:41:51,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:41:51,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:41:51,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:41:51,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:41:51,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1927f7bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51, skipping insertion in model container [2023-11-23 21:41:51,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:41:51,363 WARN L240 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_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c[1242,1255] [2023-11-23 21:41:51,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:41:51,400 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:41:51,416 WARN L240 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_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c[1242,1255] [2023-11-23 21:41:51,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:41:51,457 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:41:51,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51 WrapperNode [2023-11-23 21:41:51,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:41:51,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:41:51,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:41:51,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:41:51,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,501 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2023-11-23 21:41:51,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:41:51,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:41:51,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:41:51,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:41:51,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,526 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,554 INFO L189 HeapSplitter]: Split 23 memory accesses to 4 slices as follows [2, 6, 4, 11] [2023-11-23 21:41:51,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:41:51,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:41:51,601 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:41:51,601 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:41:51,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (1/1) ... [2023-11-23 21:41:51,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:41:51,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:51,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:41:51,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:41:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:41:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_32_0 [2023-11-23 21:41:51,684 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_32_0 [2023-11-23 21:41:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:41:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:41:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:41:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 21:41:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:41:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:41:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:41:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:41:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 21:41:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-23 21:41:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-23 21:41:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-23 21:41:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-23 21:41:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-23 21:41:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-23 21:41:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-23 21:41:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-23 21:41:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:41:51,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:41:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:41:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:41:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:41:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 21:41:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:41:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:41:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:41:51,833 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:41:51,835 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:41:52,060 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:41:52,093 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:41:52,093 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:41:52,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:41:52 BoogieIcfgContainer [2023-11-23 21:41:52,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:41:52,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:41:52,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:41:52,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:41:52,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:41:51" (1/3) ... [2023-11-23 21:41:52,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42eac540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:41:52, skipping insertion in model container [2023-11-23 21:41:52,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:51" (2/3) ... [2023-11-23 21:41:52,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42eac540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:41:52, skipping insertion in model container [2023-11-23 21:41:52,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:41:52" (3/3) ... [2023-11-23 21:41:52,107 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_freire1.c [2023-11-23 21:41:52,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:41:52,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:41:52,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:41:52,196 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a66ad4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:41:52,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:41:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:41:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:41:52,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:41:52,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:41:52,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:41:52,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:41:52,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1288934217, now seen corresponding path program 1 times [2023-11-23 21:41:52,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:41:52,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453338860] [2023-11-23 21:41:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:41:52,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:41:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:41:52,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:41:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:41:52,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:41:52,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:41:52,583 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:41:52,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:41:52,591 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:41:52,595 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:41:52,612 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-11-23 21:41:52,613 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated [2023-11-23 21:41:52,613 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-23 21:41:52,613 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-23 21:41:52,614 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-23 21:41:52,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:41:52 BoogieIcfgContainer [2023-11-23 21:41:52,623 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:41:52,623 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:41:52,624 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:41:52,624 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:41:52,625 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:41:52" (3/4) ... [2023-11-23 21:41:52,627 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:41:52,629 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:41:52,630 INFO L158 Benchmark]: Toolchain (without parser) took 1514.73ms. Allocated memory is still 146.8MB. Free memory was 102.5MB in the beginning and 112.2MB in the end (delta: -9.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:41:52,631 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory was 62.2MB in the beginning and 62.0MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:41:52,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.43ms. Allocated memory is still 146.8MB. Free memory was 102.0MB in the beginning and 91.0MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:41:52,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.57ms. Allocated memory is still 146.8MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:41:52,633 INFO L158 Benchmark]: Boogie Preprocessor took 97.17ms. Allocated memory is still 146.8MB. Free memory was 89.4MB in the beginning and 87.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:41:52,634 INFO L158 Benchmark]: RCFGBuilder took 494.45ms. Allocated memory is still 146.8MB. Free memory was 87.3MB in the beginning and 73.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:41:52,635 INFO L158 Benchmark]: TraceAbstraction took 523.06ms. Allocated memory is still 146.8MB. Free memory was 72.1MB in the beginning and 112.3MB in the end (delta: -40.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:41:52,635 INFO L158 Benchmark]: Witness Printer took 5.42ms. Allocated memory is still 146.8MB. Free memory was 112.3MB in the beginning and 112.2MB in the end (delta: 113.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:41:52,639 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory was 62.2MB in the beginning and 62.0MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.43ms. Allocated memory is still 146.8MB. Free memory was 102.0MB in the beginning and 91.0MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.57ms. Allocated memory is still 146.8MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 97.17ms. Allocated memory is still 146.8MB. Free memory was 89.4MB in the beginning and 87.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.45ms. Allocated memory is still 146.8MB. Free memory was 87.3MB in the beginning and 73.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 523.06ms. Allocated memory is still 146.8MB. Free memory was 72.1MB in the beginning and 112.3MB in the end (delta: -40.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.42ms. Allocated memory is still 146.8MB. Free memory was 112.3MB in the beginning and 112.2MB in the end (delta: 113.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 43]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of to_int at line 58, overapproximation of someBinaryArithmeticDOUBLEoperation at line 82. Possible FailurePath: [L78] int r; [L79] double a; [L80] double x; [L81] a = __VERIFIER_nondet_double() [L82] EXPR \read(a) [L82] x = a / 2.0 [L83] r = 0 [L84] CALL func_to_recursive_line_0_to_32_0(&a, &x, &r) VAL [a={7:0}, r={5:0}, x={6:0}] [L58] EXPR \read(*r) [L58] EXPR \read(*r) [L58] EXPR \read(*a) [L58] EXPR \read(*r) [L58] EXPR \read(*x) VAL [a={7:0}, a={7:0}, r={5:0}, r={5:0}, x={6:0}, x={6:0}] [L58] CALL __VERIFIER_assert(((int) (((((*r) * (*r)) - (*a)) - (*r)) + (2 * (*x)))) == 0) VAL [\old(cond)=0] [L39] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L43] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:41:52,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --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 802be743cfa79430fe29fdc090ef145d830f22b73f5bbaa3ca042d397672c148 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:41:55,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:41:55,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-23 21:41:55,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:41:55,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:41:55,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:41:55,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:41:55,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:41:55,730 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:41:55,735 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:41:55,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:41:55,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:41:55,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:41:55,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:41:55,740 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:41:55,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:41:55,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:41:55,742 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:41:55,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:41:55,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:41:55,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:41:55,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:41:55,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:41:55,745 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:41:55,745 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:41:55,746 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:41:55,746 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:41:55,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:41:55,747 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:41:55,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:41:55,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:41:55,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:41:55,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:41:55,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:41:55,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:41:55,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:41:55,752 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:41:55,752 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 21:41:55,753 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:41:55,753 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:41:55,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:41:55,754 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:41:55,754 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:41:55,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:41:55,755 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 21:41:55,755 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 802be743cfa79430fe29fdc090ef145d830f22b73f5bbaa3ca042d397672c148 [2023-11-23 21:41:56,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:41:56,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:41:56,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:41:56,182 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:41:56,183 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:41:56,184 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c [2023-11-23 21:41:59,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:41:59,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:41:59,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c [2023-11-23 21:41:59,723 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/data/9751091b0/fc1f54831b7f4ffd805a8ea1b95be3e4/FLAGa643aa512 [2023-11-23 21:41:59,740 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/data/9751091b0/fc1f54831b7f4ffd805a8ea1b95be3e4 [2023-11-23 21:41:59,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:41:59,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:41:59,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:41:59,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:41:59,752 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:41:59,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:41:59" (1/1) ... [2023-11-23 21:41:59,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c386ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:59, skipping insertion in model container [2023-11-23 21:41:59,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:41:59" (1/1) ... [2023-11-23 21:41:59,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:42:00,003 WARN L240 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_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c[1242,1255] [2023-11-23 21:42:00,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:00,054 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:42:00,071 WARN L240 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_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c[1242,1255] [2023-11-23 21:42:00,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:00,119 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:42:00,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00 WrapperNode [2023-11-23 21:42:00,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:42:00,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:00,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:42:00,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:42:00,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,186 INFO L138 Inliner]: procedures = 21, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-11-23 21:42:00,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:00,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:42:00,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:42:00,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:42:00,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,250 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,282 INFO L189 HeapSplitter]: Split 23 memory accesses to 4 slices as follows [2, 11, 6, 4] [2023-11-23 21:42:00,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:42:00,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:42:00,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:42:00,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:42:00,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (1/1) ... [2023-11-23 21:42:00,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:42:00,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:00,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:42:00,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:42:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:42:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-11-23 21:42:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-11-23 21:42:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-11-23 21:42:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-11-23 21:42:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_32_0 [2023-11-23 21:42:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_32_0 [2023-11-23 21:42:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-11-23 21:42:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-11-23 21:42:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-11-23 21:42:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-11-23 21:42:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-23 21:42:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-23 21:42:00,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-23 21:42:00,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-23 21:42:00,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:42:00,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-23 21:42:00,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-23 21:42:00,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-23 21:42:00,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-23 21:42:00,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:42:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:42:00,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:42:00,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:42:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:42:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-23 21:42:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-23 21:42:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-23 21:42:00,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-23 21:42:00,606 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:42:00,608 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:42:02,469 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:42:02,514 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:42:02,515 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:42:02,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:02 BoogieIcfgContainer [2023-11-23 21:42:02,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:42:02,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:42:02,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:42:02,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:42:02,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:41:59" (1/3) ... [2023-11-23 21:42:02,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292435bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:02, skipping insertion in model container [2023-11-23 21:42:02,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:00" (2/3) ... [2023-11-23 21:42:02,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292435bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:02, skipping insertion in model container [2023-11-23 21:42:02,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:02" (3/3) ... [2023-11-23 21:42:02,527 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_freire1.c [2023-11-23 21:42:02,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:42:02,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:42:02,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:42:02,617 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14afc057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:42:02,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:42:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:42:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:42:02,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:02,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:02,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:02,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1288934217, now seen corresponding path program 1 times [2023-11-23 21:42:02,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:42:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134679535] [2023-11-23 21:42:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:02,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:42:02,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:42:02,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:42:02,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:42:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:03,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:42:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:03,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-11-23 21:42:03,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1772098955] [2023-11-23 21:42:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:03,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:42:03,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/cvc4 [2023-11-23 21:42:03,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:42:03,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbca8c8-95b3-4511-87c8-5dcb8af74e0e/bin/uautomizer-verify-zZY32mL2XJ/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-23 21:42:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:05,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:42:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat