./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a 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_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e779827438904e8a0bb49f414cbe4d14072e556fff2389d3772808230457c73c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:02:49,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:02:50,089 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-31 22:02:50,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:02:50,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:02:50,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:02:50,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:02:50,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:02:50,130 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:02:50,131 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:02:50,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:02:50,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:02:50,134 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:02:50,135 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:02:50,135 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:02:50,135 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:02:50,135 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:02:50,136 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:02:50,136 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:02:50,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:02:50,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:02:50,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:02:50,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:02:50,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:02:50,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:02:50,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:02:50,143 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:02:50,143 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:02:50,143 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:02:50,144 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:02:50,144 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:02:50,144 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:02:50,144 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:02:50,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:02:50,145 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:02:50,146 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:02:50,146 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e779827438904e8a0bb49f414cbe4d14072e556fff2389d3772808230457c73c [2024-10-31 22:02:50,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:02:50,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:02:50,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:02:50,470 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:02:50,471 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:02:50,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i Unable to find full path for "g++" [2024-10-31 22:02:52,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:02:52,882 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:02:52,885 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i [2024-10-31 22:02:52,897 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/data/30d13d2aa/3237431fcdee47709cc50e8735f768d4/FLAGc3b701a46 [2024-10-31 22:02:52,909 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/data/30d13d2aa/3237431fcdee47709cc50e8735f768d4 [2024-10-31 22:02:52,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:02:52,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:02:52,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:02:52,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:02:52,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:02:52,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:02:52" (1/1) ... [2024-10-31 22:02:52,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182b5fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:52, skipping insertion in model container [2024-10-31 22:02:52,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:02:52" (1/1) ... [2024-10-31 22:02:52,978 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:02:53,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:02:53,359 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:02:53,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:02:53,440 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:02:53,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53 WrapperNode [2024-10-31 22:02:53,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:02:53,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:02:53,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:02:53,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:02:53,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,491 INFO L138 Inliner]: procedures = 109, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 115 [2024-10-31 22:02:53,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:02:53,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:02:53,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:02:53,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:02:53,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,529 INFO L175 MemorySlicer]: Split 27 memory accesses to 4 slices as follows [8, 4, 7, 8]. 30 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0, 0]. The 9 writes are split as follows [3, 1, 2, 3]. [2024-10-31 22:02:53,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:02:53,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:02:53,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:02:53,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:02:53,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:02:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:53,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:02:53,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:02:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:02:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:02:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:02:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:02:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:02:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:02:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:02:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:02:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:02:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:02:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:02:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:02:53,823 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:02:53,827 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:02:54,036 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-31 22:02:54,036 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:02:54,050 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:02:54,051 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:02:54,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:54 BoogieIcfgContainer [2024-10-31 22:02:54,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:02:54,054 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:02:54,054 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:02:54,058 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:02:54,058 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:02:54,059 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:02:52" (1/3) ... [2024-10-31 22:02:54,060 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f66cf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:02:54, skipping insertion in model container [2024-10-31 22:02:54,061 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:02:54,061 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53" (2/3) ... [2024-10-31 22:02:54,063 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f66cf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:02:54, skipping insertion in model container [2024-10-31 22:02:54,063 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:02:54,063 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:54" (3/3) ... [2024-10-31 22:02:54,064 INFO L332 chiAutomizerObserver]: Analyzing ICFG fermat-alloca.i [2024-10-31 22:02:54,144 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:02:54,144 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:02:54,144 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:02:54,144 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:02:54,145 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:02:54,145 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:02:54,145 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:02:54,145 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:02:54,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2024-10-31 22:02:54,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:02:54,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:02:54,168 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:02:54,174 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:02:54,175 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:54,175 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:02:54,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2024-10-31 22:02:54,179 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:02:54,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:02:54,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:02:54,180 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:02:54,181 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:54,189 INFO L745 eck$LassoCheckResult]: Stem: 12#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~malloc4#1.base, main_#t~malloc4#1.offset, main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem14#1, main_#t~mem15#1, main_#t~post16#1, main_#t~mem17#1, main_#t~mem18#1, main_#t~mem19#1, main_#t~post20#1, main_#t~mem21#1, main_#t~mem22#1, main_#t~mem23#1, main_#t~post24#1, main_#t~mem25#1, main_#t~mem26#1, main_~MAX~0#1.base, main_~MAX~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset, main_~c~0#1.base, main_~c~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~MAX~0#1.base, main_~MAX~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~a~0#1.base, main_~a~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call main_#t~malloc4#1.base, main_#t~malloc4#1.offset := #Ultimate.allocOnStack(4);main_~b~0#1.base, main_~b~0#1.offset := main_#t~malloc4#1.base, main_#t~malloc4#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnStack(4);main_~c~0#1.base, main_~c~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call write~int#1(1000, main_~MAX~0#1.base, main_~MAX~0#1.offset, 4);call write~int#0(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call write~int#3(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call write~int#2(1, main_~c~0#1.base, main_~c~0#1.offset, 4); 6#L556-2true [2024-10-31 22:02:54,190 INFO L747 eck$LassoCheckResult]: Loop: 6#L556-2true assume !false;call main_#t~mem6#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4); 13#L557true assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int#0(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int#1(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 5#L561true assume main_#t~mem17#1 > main_#t~mem18#1;havoc main_#t~mem17#1;havoc main_#t~mem18#1;call write~int#0(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem19#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);main_#t~post20#1 := main_#t~mem19#1;call write~int#3(1 + main_#t~post20#1, main_~b~0#1.base, main_~b~0#1.offset, 4);havoc main_#t~mem19#1;havoc main_#t~post20#1; 7#L561-2true call main_#t~mem21#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem22#1 := read~int#1(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 4#L565true assume main_#t~mem21#1 > main_#t~mem22#1;havoc main_#t~mem21#1;havoc main_#t~mem22#1;call write~int#3(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem23#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);main_#t~post24#1 := main_#t~mem23#1;call write~int#2(1 + main_#t~post24#1, main_~c~0#1.base, main_~c~0#1.offset, 4);havoc main_#t~mem23#1;havoc main_#t~post24#1; 10#L565-2true call main_#t~mem25#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem26#1 := read~int#1(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 3#L569true assume !(main_#t~mem25#1 > main_#t~mem26#1);havoc main_#t~mem25#1;havoc main_#t~mem26#1; 6#L556-2true [2024-10-31 22:02:54,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-31 22:02:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:54,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055476407] [2024-10-31 22:02:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:54,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:54,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:02:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:54,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:02:54,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash -903226603, now seen corresponding path program 1 times [2024-10-31 22:02:54,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:54,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122916193] [2024-10-31 22:02:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:54,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 22:02:54,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565738001] [2024-10-31 22:02:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:54,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:54,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:54,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:02:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:54,698 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:02:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:02:54,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:02:54,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:54,773 INFO L85 PathProgramCache]: Analyzing trace with hash 643070227, now seen corresponding path program 1 times [2024-10-31 22:02:54,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:54,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118201281] [2024-10-31 22:02:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:54,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:55,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:55,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118201281] [2024-10-31 22:02:55,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118201281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:55,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:55,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:02:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688054005] [2024-10-31 22:02:55,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:08,978 WARN L286 SmtUtils]: Spent 13.44s on a formula simplification that was a NOOP. DAG size: 118 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-10-31 22:03:21,528 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-31 22:03:21,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:21,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:21,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:21,967 INFO L87 Difference]: Start difference. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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 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) [2024-10-31 22:03:22,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:22,046 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2024-10-31 22:03:22,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2024-10-31 22:03:22,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:03:22,053 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 14 transitions. [2024-10-31 22:03:22,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-10-31 22:03:22,054 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2024-10-31 22:03:22,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2024-10-31 22:03:22,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:03:22,056 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-10-31 22:03:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2024-10-31 22:03:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-31 22:03:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 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) [2024-10-31 22:03:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-10-31 22:03:22,091 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-10-31 22:03:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:22,097 INFO L425 stractBuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-10-31 22:03:22,097 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:03:22,098 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2024-10-31 22:03:22,098 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-31 22:03:22,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:03:22,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:03:22,099 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-10-31 22:03:22,099 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:22,100 INFO L745 eck$LassoCheckResult]: Stem: 50#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 51#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~malloc4#1.base, main_#t~malloc4#1.offset, main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem14#1, main_#t~mem15#1, main_#t~post16#1, main_#t~mem17#1, main_#t~mem18#1, main_#t~mem19#1, main_#t~post20#1, main_#t~mem21#1, main_#t~mem22#1, main_#t~mem23#1, main_#t~post24#1, main_#t~mem25#1, main_#t~mem26#1, main_~MAX~0#1.base, main_~MAX~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset, main_~c~0#1.base, main_~c~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~MAX~0#1.base, main_~MAX~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~a~0#1.base, main_~a~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call main_#t~malloc4#1.base, main_#t~malloc4#1.offset := #Ultimate.allocOnStack(4);main_~b~0#1.base, main_~b~0#1.offset := main_#t~malloc4#1.base, main_#t~malloc4#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnStack(4);main_~c~0#1.base, main_~c~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call write~int#1(1000, main_~MAX~0#1.base, main_~MAX~0#1.offset, 4);call write~int#0(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call write~int#3(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call write~int#2(1, main_~c~0#1.base, main_~c~0#1.offset, 4); 48#L556-2 assume !false;call main_#t~mem6#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4); 49#L557 assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int#0(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int#1(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 46#L561 assume !(main_#t~mem17#1 > main_#t~mem18#1);havoc main_#t~mem17#1;havoc main_#t~mem18#1; 47#L561-2 [2024-10-31 22:03:22,100 INFO L747 eck$LassoCheckResult]: Loop: 47#L561-2 call main_#t~mem21#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem22#1 := read~int#1(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 44#L565 assume main_#t~mem21#1 > main_#t~mem22#1;havoc main_#t~mem21#1;havoc main_#t~mem22#1;call write~int#3(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem23#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);main_#t~post24#1 := main_#t~mem23#1;call write~int#2(1 + main_#t~post24#1, main_~c~0#1.base, main_~c~0#1.offset, 4);havoc main_#t~mem23#1;havoc main_#t~post24#1; 45#L565-2 call main_#t~mem25#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem26#1 := read~int#1(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 42#L569 assume !(main_#t~mem25#1 > main_#t~mem26#1);havoc main_#t~mem25#1;havoc main_#t~mem26#1; 43#L556-2 assume !false;call main_#t~mem6#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int#2(main_~c~0#1.base, main_~c~0#1.offset, 4); 53#L557 assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int#0(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int#0(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int#1(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 52#L561 assume main_#t~mem17#1 > main_#t~mem18#1;havoc main_#t~mem17#1;havoc main_#t~mem18#1;call write~int#0(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem19#1 := read~int#3(main_~b~0#1.base, main_~b~0#1.offset, 4);main_#t~post20#1 := main_#t~mem19#1;call write~int#3(1 + main_#t~post20#1, main_~b~0#1.base, main_~b~0#1.offset, 4);havoc main_#t~mem19#1;havoc main_#t~post20#1; 47#L561-2 [2024-10-31 22:03:22,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:22,101 INFO L85 PathProgramCache]: Analyzing trace with hash 28699821, now seen corresponding path program 1 times [2024-10-31 22:03:22,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:22,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550496178] [2024-10-31 22:03:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:22,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 22:03:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643915728] [2024-10-31 22:03:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:22,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:22,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:22,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:03:22,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:03:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:03:22,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:03:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:03:22,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:03:22,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1453675845, now seen corresponding path program 2 times [2024-10-31 22:03:22,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:22,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481409112] [2024-10-31 22:03:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:22,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 22:03:22,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887306801] [2024-10-31 22:03:22,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:03:22,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:22,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:22,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:03:22,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51c133e-1cef-40a0-91fe-a33841d986a1/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:03:22,475 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:03:22,476 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-10-31 22:03:22,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:03:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:03:22,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:03:22,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1341656857, now seen corresponding path program 1 times [2024-10-31 22:03:22,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:22,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622864987] [2024-10-31 22:03:22,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:22,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622864987] [2024-10-31 22:03:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622864987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:22,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:22,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586126836] [2024-10-31 22:03:22,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton