./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 0e0057cc 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_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme --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 0.2.4-dev-0e0057c [2023-11-26 11:43:56,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:43:56,356 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:43:56,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:43:56,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:43:56,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:43:56,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:43:56,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:43:56,407 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:43:56,412 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:43:56,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:43:56,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:43:56,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:43:56,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:43:56,416 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:43:56,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:43:56,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:43:56,417 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:43:56,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:43:56,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:43:56,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:43:56,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:43:56,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:43:56,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:43:56,421 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:43:56,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:43:56,422 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:43:56,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:43:56,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:43:56,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:43:56,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:43:56,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:43:56,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:43:56,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:43:56,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:43:56,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:43:56,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:43:56,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:43:56,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:43:56,428 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:43:56,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:43:56,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:43:56,430 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_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 802be743cfa79430fe29fdc090ef145d830f22b73f5bbaa3ca042d397672c148 [2023-11-26 11:43:56,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:43:56,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:43:56,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:43:56,786 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:43:56,786 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:43:56,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c [2023-11-26 11:43:59,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:44:00,117 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:44:00,118 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c [2023-11-26 11:44:00,126 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/data/2526d310b/febd658ab02a42e5b491a4dab4342069/FLAG598ef4ac0 [2023-11-26 11:44:00,142 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/data/2526d310b/febd658ab02a42e5b491a4dab4342069 [2023-11-26 11:44:00,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:44:00,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:44:00,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:00,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:44:00,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:44:00,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ee34e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00, skipping insertion in model container [2023-11-26 11:44:00,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,180 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:44:00,376 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_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c[1242,1255] [2023-11-26 11:44:00,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:00,411 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:44:00,429 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_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c[1242,1255] [2023-11-26 11:44:00,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:00,471 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:44:00,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00 WrapperNode [2023-11-26 11:44:00,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:00,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:00,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:44:00,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:44:00,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,522 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2023-11-26 11:44:00,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:00,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:44:00,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:44:00,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:44:00,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,589 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 6, 11, 4]. 48 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 5 writes are split as follows [0, 2, 2, 1]. [2023-11-26 11:44:00,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,610 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:44:00,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:44:00,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:44:00,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:44:00,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (1/1) ... [2023-11-26 11:44:00,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:00,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:00,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:00,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:44:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:44:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_32_0 [2023-11-26 11:44:00,713 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_32_0 [2023-11-26 11:44:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:44:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:44:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:44:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:44:00,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:44:00,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:44:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:44:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:44:00,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:44:00,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-26 11:44:00,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-26 11:44:00,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-26 11:44:00,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-26 11:44:00,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-26 11:44:00,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-26 11:44:00,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-26 11:44:00,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-26 11:44:00,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:44:00,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:44:00,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:44:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:44:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:44:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:44:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:44:00,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:44:00,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:44:00,875 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:44:00,878 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:44:01,042 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:44:01,072 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:44:01,073 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:44:01,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:01 BoogieIcfgContainer [2023-11-26 11:44:01,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:44:01,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:44:01,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:44:01,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:44:01,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:44:00" (1/3) ... [2023-11-26 11:44:01,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7d7e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:01, skipping insertion in model container [2023-11-26 11:44:01,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:00" (2/3) ... [2023-11-26 11:44:01,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7d7e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:01, skipping insertion in model container [2023-11-26 11:44:01,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:01" (3/3) ... [2023-11-26 11:44:01,085 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_freire1.c [2023-11-26 11:44:01,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:44:01,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:44:01,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:44:01,169 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;@63139fcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:44:01,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:44:01,174 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) [2023-11-26 11:44:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:44:01,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:01,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:01,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:01,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:01,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1288934217, now seen corresponding path program 1 times [2023-11-26 11:44:01,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:01,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357858646] [2023-11-26 11:44:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:01,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:01,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:44:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:01,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:44:01,422 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:44:01,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 11:44:01,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:44:01,437 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 11:44:01,441 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:44:01,453 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-11-26 11:44:01,454 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-26 11:44:01,454 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-26 11:44:01,454 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-26 11:44:01,454 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem8 could not be translated [2023-11-26 11:44:01,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:44:01 BoogieIcfgContainer [2023-11-26 11:44:01,462 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:44:01,463 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:44:01,463 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:44:01,464 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:44:01,464 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:01" (3/4) ... [2023-11-26 11:44:01,469 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:44:01,470 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:44:01,471 INFO L158 Benchmark]: Toolchain (without parser) took 1325.14ms. Allocated memory is still 151.0MB. Free memory was 115.8MB in the beginning and 113.0MB in the end (delta: 2.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-11-26 11:44:01,472 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 111.1MB. Free memory was 60.9MB in the beginning and 60.7MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:44:01,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.27ms. Allocated memory is still 151.0MB. Free memory was 115.5MB in the beginning and 104.5MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:44:01,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.67ms. Allocated memory is still 151.0MB. Free memory was 104.5MB in the beginning and 102.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:44:01,474 INFO L158 Benchmark]: Boogie Preprocessor took 97.06ms. Allocated memory is still 151.0MB. Free memory was 102.9MB in the beginning and 100.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:44:01,475 INFO L158 Benchmark]: RCFGBuilder took 453.01ms. Allocated memory is still 151.0MB. Free memory was 100.8MB in the beginning and 86.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 11:44:01,475 INFO L158 Benchmark]: TraceAbstraction took 386.25ms. Allocated memory is still 151.0MB. Free memory was 86.2MB in the beginning and 113.0MB in the end (delta: -26.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:44:01,476 INFO L158 Benchmark]: Witness Printer took 7.37ms. Allocated memory is still 151.0MB. Free memory is still 113.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:44:01,480 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 111.1MB. Free memory was 60.9MB in the beginning and 60.7MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.27ms. Allocated memory is still 151.0MB. Free memory was 115.5MB in the beginning and 104.5MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.67ms. Allocated memory is still 151.0MB. Free memory was 104.5MB in the beginning and 102.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 97.06ms. Allocated memory is still 151.0MB. Free memory was 102.9MB in the beginning and 100.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 453.01ms. Allocated memory is still 151.0MB. Free memory was 100.8MB in the beginning and 86.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 386.25ms. Allocated memory is still 151.0MB. Free memory was 86.2MB in the beginning and 113.0MB in the end (delta: -26.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.37ms. Allocated memory is still 151.0MB. Free memory is still 113.0MB. 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~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem8 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: 0.3s, 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 [2023-11-26 11:44:01,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme --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 0.2.4-dev-0e0057c [2023-11-26 11:44:04,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:44:04,368 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 11:44:04,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:44:04,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:44:04,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:44:04,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:44:04,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:44:04,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:44:04,417 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:44:04,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:44:04,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:44:04,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:44:04,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:44:04,422 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:44:04,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:44:04,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:44:04,424 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:44:04,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:44:04,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:44:04,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:44:04,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:44:04,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:44:04,427 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:44:04,427 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:44:04,428 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:44:04,428 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:44:04,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:44:04,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:44:04,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:44:04,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:44:04,432 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:44:04,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:44:04,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:04,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:44:04,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:44:04,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:44:04,434 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:44:04,434 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:44:04,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:44:04,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:44:04,435 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:44:04,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:44:04,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:44:04,436 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:44:04,436 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_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 802be743cfa79430fe29fdc090ef145d830f22b73f5bbaa3ca042d397672c148 [2023-11-26 11:44:04,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:44:04,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:44:04,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:44:04,894 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:44:04,895 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:44:04,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c [2023-11-26 11:44:08,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:44:08,368 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:44:08,369 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c [2023-11-26 11:44:08,378 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/data/61bcf6ae8/a1aa5b3dea5a48449f94a79ccd7947b2/FLAG3ff4d7ff1 [2023-11-26 11:44:08,397 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/data/61bcf6ae8/a1aa5b3dea5a48449f94a79ccd7947b2 [2023-11-26 11:44:08,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:44:08,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:44:08,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:08,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:44:08,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:44:08,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cc0c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08, skipping insertion in model container [2023-11-26 11:44:08,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,446 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:44:08,650 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_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c[1242,1255] [2023-11-26 11:44:08,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:08,696 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:44:08,713 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_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/sv-benchmarks/c/recursified_nla-digbench/recursified_freire1.c[1242,1255] [2023-11-26 11:44:08,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:08,758 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:44:08,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08 WrapperNode [2023-11-26 11:44:08,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:08,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:08,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:44:08,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:44:08,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,821 INFO L138 Inliner]: procedures = 21, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-11-26 11:44:08,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:08,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:44:08,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:44:08,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:44:08,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,879 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 11, 6, 4]. 48 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 5 writes are split as follows [0, 2, 2, 1]. [2023-11-26 11:44:08,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:44:08,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:44:08,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:44:08,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:44:08,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (1/1) ... [2023-11-26 11:44:08,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:08,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:08,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:09,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:44:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:44:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-11-26 11:44:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-11-26 11:44:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-11-26 11:44:09,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-11-26 11:44:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_32_0 [2023-11-26 11:44:09,023 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_32_0 [2023-11-26 11:44:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-11-26 11:44:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-11-26 11:44:09,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-11-26 11:44:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-11-26 11:44:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:44:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 11:44:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 11:44:09,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 11:44:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:44:09,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 11:44:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 11:44:09,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 11:44:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 11:44:09,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:44:09,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:44:09,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:44:09,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:44:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:44:09,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 11:44:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 11:44:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 11:44:09,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 11:44:09,188 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:44:09,191 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:44:11,708 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:44:11,760 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:44:11,764 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:44:11,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:11 BoogieIcfgContainer [2023-11-26 11:44:11,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:44:11,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:44:11,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:44:11,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:44:11,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:44:08" (1/3) ... [2023-11-26 11:44:11,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be34a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:11, skipping insertion in model container [2023-11-26 11:44:11,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:08" (2/3) ... [2023-11-26 11:44:11,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be34a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:11, skipping insertion in model container [2023-11-26 11:44:11,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:11" (3/3) ... [2023-11-26 11:44:11,778 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_freire1.c [2023-11-26 11:44:11,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:44:11,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:44:11,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:44:11,883 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;@4c01a1ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:44:11,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:44:11,889 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) [2023-11-26 11:44:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:44:11,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:11,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:11,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:44:11,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1288934217, now seen corresponding path program 1 times [2023-11-26 11:44:11,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:44:11,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347037344] [2023-11-26 11:44:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:11,951 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 [2023-11-26 11:44:11,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:44:11,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 11:44:11,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 11:44:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:12,824 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:44:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:13,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-11-26 11:44:13,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1473699721] [2023-11-26 11:44:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:13,301 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-26 11:44:13,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/cvc4 [2023-11-26 11:44:13,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-26 11:44:13,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aff59a2-6e8d-4215-8985-a173f4b9a3a6/bin/uautomizer-verify-VRDe98Ueme/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-26 11:44:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:44:14,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:44:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat