./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.i --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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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 87554a4f39ea71934805d096a19f81b20cf82924707369622052a80438a85d9f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:36,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:36,362 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:41:36,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:36,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:36,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:36,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:36,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:36,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:36,418 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:36,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:36,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:36,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:36,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:36,422 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:36,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:36,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:36,423 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:41:36,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:36,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:41:36,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:36,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:36,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:36,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:36,426 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:41:36,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:36,427 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:36,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:36,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:36,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:36,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:36,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:36,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:36,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:36,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:36,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:36,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:36,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:36,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:36,432 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:36,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:36,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:36,433 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87554a4f39ea71934805d096a19f81b20cf82924707369622052a80438a85d9f [2023-11-26 10:41:36,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:36,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:36,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:36,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:36,811 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:36,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.i [2023-11-26 10:41:39,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:40,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:40,080 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i [2023-11-26 10:41:40,090 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/data/4d64d561b/256fd60771b04e4e88c5b9f1982de7d3/FLAG8ad06de67 [2023-11-26 10:41:40,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/data/4d64d561b/256fd60771b04e4e88c5b9f1982de7d3 [2023-11-26 10:41:40,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:40,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:40,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:40,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:40,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:40,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd0e1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40, skipping insertion in model container [2023-11-26 10:41:40,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:40,359 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[1226,1239] [2023-11-26 10:41:40,385 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[2862,2875] [2023-11-26 10:41:40,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:40,398 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:41:40,421 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[1226,1239] [2023-11-26 10:41:40,433 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[2862,2875] [2023-11-26 10:41:40,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:40,451 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:41:40,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40 WrapperNode [2023-11-26 10:41:40,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:40,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:40,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:41:40,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:41:40,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,501 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 93 [2023-11-26 10:41:40,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:40,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:41:40,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:41:40,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:41:40,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,531 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-26 10:41:40,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,532 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:41:40,549 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:41:40,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:41:40,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:41:40,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:40,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:40,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:41:40,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:41:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:41:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-26 10:41:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-26 10:41:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-26 10:41:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-26 10:41:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:41:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:41:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:41:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:41:40,754 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:41:40,758 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:40,993 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:41,032 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:41,033 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:41:41,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:41 BoogieIcfgContainer [2023-11-26 10:41:41,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:41,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:41,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:41,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:41,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:40" (1/3) ... [2023-11-26 10:41:41,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ec7298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:41, skipping insertion in model container [2023-11-26 10:41:41,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (2/3) ... [2023-11-26 10:41:41,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ec7298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:41, skipping insertion in model container [2023-11-26 10:41:41,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:41" (3/3) ... [2023-11-26 10:41:41,049 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_2.i [2023-11-26 10:41:41,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:41,071 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:41:41,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:41,120 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;@46873cdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:41,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 10:41:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 10:41:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 10:41:41,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:41,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:41,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:41,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash 210916014, now seen corresponding path program 1 times [2023-11-26 10:41:41,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:41,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838139520] [2023-11-26 10:41:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:41,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:41,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838139520] [2023-11-26 10:41:41,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838139520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:41,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:41,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:41,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738602510] [2023-11-26 10:41:41,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:41,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:41,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:41,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:41,573 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:41,646 INFO L93 Difference]: Finished difference Result 67 states and 91 transitions. [2023-11-26 10:41:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:41,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-26 10:41:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:41,655 INFO L225 Difference]: With dead ends: 67 [2023-11-26 10:41:41,656 INFO L226 Difference]: Without dead ends: 30 [2023-11-26 10:41:41,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:41,662 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:41,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 90 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-26 10:41:41,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-11-26 10:41:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 10:41:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-11-26 10:41:41,701 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 9 [2023-11-26 10:41:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:41,701 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-11-26 10:41:41,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-26 10:41:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 10:41:41,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:41,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:41,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:41:41,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:41,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:41,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1985923376, now seen corresponding path program 1 times [2023-11-26 10:41:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600366356] [2023-11-26 10:41:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:41,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600366356] [2023-11-26 10:41:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600366356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:41,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:41,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631509406] [2023-11-26 10:41:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:41,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:41:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:41,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:41:41,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:41,897 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:41,949 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-11-26 10:41:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:41,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-26 10:41:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:41,951 INFO L225 Difference]: With dead ends: 34 [2023-11-26 10:41:41,951 INFO L226 Difference]: Without dead ends: 29 [2023-11-26 10:41:41,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:41,953 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:41,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-26 10:41:41,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-26 10:41:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 10:41:41,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-26 10:41:41,962 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 9 [2023-11-26 10:41:41,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:41,962 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-26 10:41:41,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:41,962 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-26 10:41:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-26 10:41:41,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:41,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:41,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:41:41,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:41,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:41,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1419511809, now seen corresponding path program 1 times [2023-11-26 10:41:41,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:41,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872518871] [2023-11-26 10:41:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:41,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:41,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82954266] [2023-11-26 10:41:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:41,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:41,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:41,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:42,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:41:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-26 10:41:42,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:47,828 WARN L854 $PredicateComparison]: unable to prove that (and (let ((.cse5 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256))) (or (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse1 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse0 (mod .cse1 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse0) (<= (mod (+ .cse1 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256) 127) (<= (mod (+ .cse1 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= .cse0 127) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse3 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse2 (mod .cse3 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse2) (<= 128 (mod (+ .cse3 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256)) (<= .cse2 127) (<= 128 (mod (+ .cse3 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse6 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse4 (mod .cse6 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 .cse4) (= .cse5 .cse4) (<= 128 (mod (+ .cse6 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256)) (<= 128 (mod (+ .cse6 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse8 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse7 (mod .cse8 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 .cse7) (= .cse5 .cse7) (<= (mod (+ .cse8 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256) 127) (<= (mod (+ .cse8 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse9 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse9 256)) (<= |v_ULTIMATE.start_gcd_test_~b#1_13| 127) (<= (mod (+ .cse9 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_13|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_13| 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse11 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse10 (mod .cse11 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse10) (<= 128 (mod (+ .cse11 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256)) (<= (mod (+ .cse11 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= .cse10 127) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse13 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse12 (mod .cse13 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 .cse12) (= .cse5 .cse12) (<= (mod (+ .cse13 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256) 127) (<= 128 (mod (+ .cse13 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse14 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse14 256)) (<= |v_ULTIMATE.start_gcd_test_~b#1_13| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 (mod (+ .cse14 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (not (= |v_ULTIMATE.start_gcd_test_~b#1_13| 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse16 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse15 (mod .cse16 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (<= 128 .cse15) (= .cse5 .cse15) (<= 128 (mod (+ .cse16 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256)) (<= (mod (+ .cse16 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~b#1_13| Int)) (let ((.cse18 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_13|))) (let ((.cse17 (mod .cse18 256))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| |v_ULTIMATE.start_gcd_test_~b#1_13|) (= |c_ULTIMATE.start_gcd_test_~b#1| .cse17) (<= (mod (+ .cse18 (* 255 |v_ULTIMATE.start_gcd_test_~b#1_13|)) 256) 127) (<= .cse17 127) (<= 128 (mod (+ .cse18 |v_ULTIMATE.start_gcd_test_~b#1_13|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_13| 1) 0))))))) (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) is different from false [2023-11-26 10:42:11,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-11-26 10:42:11,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872518871] [2023-11-26 10:42:11,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:42:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82954266] [2023-11-26 10:42:11,253 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-26 10:42:11,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:11,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:11,454 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2023-11-26 10:42:11,458 INFO L158 Benchmark]: Toolchain (without parser) took 31343.68ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 121.6MB in the beginning and 136.6MB in the end (delta: -15.0MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2023-11-26 10:42:11,458 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:11,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.96ms. Allocated memory is still 157.3MB. Free memory was 121.6MB in the beginning and 109.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:42:11,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.02ms. Allocated memory is still 157.3MB. Free memory was 109.5MB in the beginning and 107.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:42:11,460 INFO L158 Benchmark]: Boogie Preprocessor took 46.21ms. Allocated memory is still 157.3MB. Free memory was 107.8MB in the beginning and 105.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:42:11,461 INFO L158 Benchmark]: RCFGBuilder took 490.88ms. Allocated memory is still 157.3MB. Free memory was 105.3MB in the beginning and 92.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:42:11,461 INFO L158 Benchmark]: TraceAbstraction took 30414.16ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 91.5MB in the beginning and 136.6MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:11,467 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.96ms. Allocated memory is still 157.3MB. Free memory was 121.6MB in the beginning and 109.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.02ms. Allocated memory is still 157.3MB. Free memory was 109.5MB in the beginning and 107.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.21ms. Allocated memory is still 157.3MB. Free memory was 107.8MB in the beginning and 105.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 490.88ms. Allocated memory is still 157.3MB. Free memory was 105.3MB in the beginning and 92.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 30414.16ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 91.5MB in the beginning and 136.6MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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 87554a4f39ea71934805d096a19f81b20cf82924707369622052a80438a85d9f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:13,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:14,084 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 10:42:14,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:14,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:14,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:14,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:14,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:14,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:14,125 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:14,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:14,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:14,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:14,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:14,129 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:14,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:14,131 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:42:14,131 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:42:14,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:42:14,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:14,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:42:14,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:14,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:42:14,135 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:42:14,136 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 10:42:14,136 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 10:42:14,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:42:14,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:42:14,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:14,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:14,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:14,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:14,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:14,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:14,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:14,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:14,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:42:14,144 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 10:42:14,145 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 10:42:14,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:14,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:14,147 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:42:14,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:14,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:14,148 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 10:42:14,148 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87554a4f39ea71934805d096a19f81b20cf82924707369622052a80438a85d9f [2023-11-26 10:42:14,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:14,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:14,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:14,601 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:14,602 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:14,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/gcd_3+newton_3_2.i [2023-11-26 10:42:17,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:18,064 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:18,065 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i [2023-11-26 10:42:18,077 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/data/3f34b341d/32708718df074a46b87db34192220c6c/FLAG22a908a48 [2023-11-26 10:42:18,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/data/3f34b341d/32708718df074a46b87db34192220c6c [2023-11-26 10:42:18,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:18,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:18,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:18,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:18,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:18,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678e7d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18, skipping insertion in model container [2023-11-26 10:42:18,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,152 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:18,379 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[1226,1239] [2023-11-26 10:42:18,438 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[2862,2875] [2023-11-26 10:42:18,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:18,462 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:18,490 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[1226,1239] [2023-11-26 10:42:18,521 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_051fa3a1-9c13-4218-b42d-765b00c3bfa3/sv-benchmarks/c/combinations/gcd_3+newton_3_2.i[2862,2875] [2023-11-26 10:42:18,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:18,548 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:18,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18 WrapperNode [2023-11-26 10:42:18,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:18,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:18,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:18,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:18,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,622 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2023-11-26 10:42:18,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:18,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:18,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:18,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:18,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,663 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-26 10:42:18,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:18,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:18,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:18,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:18,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (1/1) ... [2023-11-26 10:42:18,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:18,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:18,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:18,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 10:42:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 10:42:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-26 10:42:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-26 10:42:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-26 10:42:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-26 10:42:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:18,880 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:18,883 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:32,849 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:32,908 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:32,909 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:42:32,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:32 BoogieIcfgContainer [2023-11-26 10:42:32,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:32,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:32,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:32,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:32,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:18" (1/3) ... [2023-11-26 10:42:32,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec33242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:32, skipping insertion in model container [2023-11-26 10:42:32,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:18" (2/3) ... [2023-11-26 10:42:32,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec33242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:32, skipping insertion in model container [2023-11-26 10:42:32,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:32" (3/3) ... [2023-11-26 10:42:32,928 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_2.i [2023-11-26 10:42:32,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:32,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:42:33,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:33,010 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;@4b416ac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:33,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 10:42:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 10:42:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 10:42:33,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:33,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:33,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:33,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 210916014, now seen corresponding path program 1 times [2023-11-26 10:42:33,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:33,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284969476] [2023-11-26 10:42:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:33,042 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 10:42:33,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:33,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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 10:42:33,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051fa3a1-9c13-4218-b42d-765b00c3bfa3/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 10:42:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:42:33,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:33,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:33,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:33,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284969476] [2023-11-26 10:42:33,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284969476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:33,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:33,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043744608] [2023-11-26 10:42:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:33,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:33,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:33,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:33,324 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 24 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:38,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 10:42:42,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]