./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/condgf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/condgf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6e9c50b7debf63002c3de8c5fbbc063838f4d20677e88c6b86a62b1ad965f5f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:35:34,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:35:34,482 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:35:34,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:35:34,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:35:34,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:35:34,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:35:34,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:35:34,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:35:34,564 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:35:34,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:35:34,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:35:34,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:35:34,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:35:34,570 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:35:34,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:35:34,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:35:34,572 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:35:34,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:35:34,574 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:35:34,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:35:34,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:35:34,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:35:34,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:35:34,578 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:35:34,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:35:34,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:35:34,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:35:34,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:35:34,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:35:34,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:35:34,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:34,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:35:34,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:35:34,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:35:34,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:35:34,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:35:34,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:35:34,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:35:34,587 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:35:34,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:35:34,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:35:34,588 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_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6e9c50b7debf63002c3de8c5fbbc063838f4d20677e88c6b86a62b1ad965f5f [2023-11-23 21:35:34,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:35:35,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:35:35,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:35:35,007 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:35:35,010 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:35:35,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/array-fpi/condgf.c [2023-11-23 21:35:38,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:35:38,528 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:35:38,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/sv-benchmarks/c/array-fpi/condgf.c [2023-11-23 21:35:38,542 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/data/a986b294e/4b36a9c7213544d4aeeeaadae098aa14/FLAGbf14f0351 [2023-11-23 21:35:38,564 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/data/a986b294e/4b36a9c7213544d4aeeeaadae098aa14 [2023-11-23 21:35:38,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:35:38,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:35:38,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:38,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:35:38,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:35:38,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:38,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317512d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38, skipping insertion in model container [2023-11-23 21:35:38,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:38,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:35:38,816 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_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2023-11-23 21:35:38,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:38,856 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:35:38,872 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_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2023-11-23 21:35:38,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:38,903 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:35:38,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38 WrapperNode [2023-11-23 21:35:38,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:38,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:38,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:35:38,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:35:38,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:38,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:38,951 INFO L138 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2023-11-23 21:35:38,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:38,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:35:38,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:35:38,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:35:38,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:38,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:38,973 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:38,987 INFO L189 HeapSplitter]: Split 13 memory accesses to 3 slices as follows [2, 7, 4] [2023-11-23 21:35:38,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:38,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:38,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:39,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:39,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:39,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:39,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:35:39,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:35:39,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:35:39,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:35:39,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (1/1) ... [2023-11-23 21:35:39,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:39,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:39,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:35:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:35:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:35:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:35:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:35:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:35:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:35:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:35:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:35:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:35:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:35:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:35:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:35:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:35:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:35:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:35:39,219 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:35:39,223 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:35:39,502 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:35:39,535 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:35:39,535 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:35:39,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:39 BoogieIcfgContainer [2023-11-23 21:35:39,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:35:39,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:35:39,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:35:39,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:35:39,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:35:38" (1/3) ... [2023-11-23 21:35:39,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576d58b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:39, skipping insertion in model container [2023-11-23 21:35:39,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:38" (2/3) ... [2023-11-23 21:35:39,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576d58b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:39, skipping insertion in model container [2023-11-23 21:35:39,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:39" (3/3) ... [2023-11-23 21:35:39,552 INFO L112 eAbstractionObserver]: Analyzing ICFG condgf.c [2023-11-23 21:35:39,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:35:39,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:35:39,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:35:39,673 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;@64cf0214, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:35:39,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:35:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 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) [2023-11-23 21:35:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:35:39,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:39,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:39,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:39,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1932781911, now seen corresponding path program 1 times [2023-11-23 21:35:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:39,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839876177] [2023-11-23 21:35:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:39,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:39,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:39,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839876177] [2023-11-23 21:35:39,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839876177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:39,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:39,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:35:39,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977630108] [2023-11-23 21:35:39,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:40,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:35:40,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:40,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:35:40,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:35:40,040 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-23 21:35:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:40,075 INFO L93 Difference]: Finished difference Result 37 states and 57 transitions. [2023-11-23 21:35:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:35:40,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2023-11-23 21:35:40,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:40,089 INFO L225 Difference]: With dead ends: 37 [2023-11-23 21:35:40,089 INFO L226 Difference]: Without dead ends: 17 [2023-11-23 21:35:40,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:35:40,097 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:35:40,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:40,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-23 21:35:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-23 21:35:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2023-11-23 21:35:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-11-23 21:35:40,142 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 13 [2023-11-23 21:35:40,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:40,143 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-11-23 21:35:40,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-23 21:35:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-11-23 21:35:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:35:40,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:40,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:40,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:35:40,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:40,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1661120807, now seen corresponding path program 1 times [2023-11-23 21:35:40,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:40,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260127749] [2023-11-23 21:35:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:40,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:40,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:40,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260127749] [2023-11-23 21:35:40,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260127749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:40,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:40,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:35:40,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785426788] [2023-11-23 21:35:40,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:40,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:35:40,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:35:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:35:40,422 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-23 21:35:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:40,580 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2023-11-23 21:35:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:35:40,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-23 21:35:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:40,583 INFO L225 Difference]: With dead ends: 39 [2023-11-23 21:35:40,585 INFO L226 Difference]: Without dead ends: 27 [2023-11-23 21:35:40,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:35:40,591 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:35:40,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 12 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:35:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-23 21:35:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2023-11-23 21:35:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2023-11-23 21:35:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-11-23 21:35:40,608 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2023-11-23 21:35:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:40,608 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-11-23 21:35:40,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-23 21:35:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-11-23 21:35:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:35:40,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:40,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:40,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:35:40,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:40,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1604932393, now seen corresponding path program 1 times [2023-11-23 21:35:40,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153966268] [2023-11-23 21:35:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:41,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:41,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153966268] [2023-11-23 21:35:41,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153966268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:35:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713895366] [2023-11-23 21:35:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:41,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:35:41,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:41,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:35:41,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:35:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:41,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 21:35:41,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:35:41,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:35:41,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:35:41,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 21:35:42,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 21:35:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:42,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:35:42,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-23 21:35:42,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2023-11-23 21:35:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:42,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713895366] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:35:42,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:35:42,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-11-23 21:35:42,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064348751] [2023-11-23 21:35:42,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:35:42,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 21:35:42,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 21:35:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:35:42,294 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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) [2023-11-23 21:35:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:42,932 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2023-11-23 21:35:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:35:42,933 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 18 [2023-11-23 21:35:42,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:42,934 INFO L225 Difference]: With dead ends: 51 [2023-11-23 21:35:42,934 INFO L226 Difference]: Without dead ends: 42 [2023-11-23 21:35:42,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:35:42,936 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 106 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:35:42,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 102 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:35:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-23 21:35:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 29. [2023-11-23 21:35:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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) [2023-11-23 21:35:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2023-11-23 21:35:42,947 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 18 [2023-11-23 21:35:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:42,947 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2023-11-23 21:35:42,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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) [2023-11-23 21:35:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2023-11-23 21:35:42,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:35:42,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:42,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:42,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:43,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:35:43,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:43,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash 170074969, now seen corresponding path program 1 times [2023-11-23 21:35:43,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:43,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628873319] [2023-11-23 21:35:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:43,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:43,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:35:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:35:43,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:35:43,254 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:35:43,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:35:43,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:35:43,262 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-23 21:35:43,267 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:35:43,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:35:43 BoogieIcfgContainer [2023-11-23 21:35:43,300 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:35:43,301 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:35:43,301 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:35:43,301 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:35:43,302 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:39" (3/4) ... [2023-11-23 21:35:43,303 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 21:35:43,350 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c913bd-004a-40ec-b5e9-8f4d6c9cc54b/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:35:43,350 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:35:43,351 INFO L158 Benchmark]: Toolchain (without parser) took 4776.66ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 91.0MB in the end (delta: 28.0MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2023-11-23 21:35:43,351 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:35:43,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.28ms. Allocated memory is still 151.0MB. Free memory was 118.6MB in the beginning and 107.6MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:35:43,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.87ms. Allocated memory is still 151.0MB. Free memory was 107.6MB in the beginning and 106.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:35:43,353 INFO L158 Benchmark]: Boogie Preprocessor took 56.77ms. Allocated memory is still 151.0MB. Free memory was 106.1MB in the beginning and 104.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:35:43,353 INFO L158 Benchmark]: RCFGBuilder took 525.75ms. Allocated memory is still 151.0MB. Free memory was 104.0MB in the beginning and 90.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:35:43,353 INFO L158 Benchmark]: TraceAbstraction took 3760.37ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 93.1MB in the end (delta: -3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:35:43,354 INFO L158 Benchmark]: Witness Printer took 49.67ms. Allocated memory is still 151.0MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:35:43,356 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.28ms. Allocated memory is still 151.0MB. Free memory was 118.6MB in the beginning and 107.6MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.87ms. Allocated memory is still 151.0MB. Free memory was 107.6MB in the beginning and 106.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.77ms. Allocated memory is still 151.0MB. Free memory was 106.1MB in the beginning and 104.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 525.75ms. Allocated memory is still 151.0MB. Free memory was 104.0MB in the beginning and 90.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3760.37ms. Allocated memory is still 151.0MB. Free memory was 89.8MB in the beginning and 93.1MB in the end (delta: -3.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 49.67ms. Allocated memory is still 151.0MB. Free memory was 93.1MB in the beginning and 91.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [N=1, \old(cond)=1, cond=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1, a={-1:0}, i=0, sum={5:0}] [L32] COND TRUE i