./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/matrix-2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/matrix-2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB --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 29c60028fe77c919c85938e022adc26e4c09a5802df35e9dae1aea434a543980 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:29:37,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:29:37,745 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:29:37,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:29:37,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:29:37,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:29:37,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:29:37,792 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:29:37,792 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:29:37,793 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:29:37,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:29:37,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:29:37,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:29:37,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:29:37,795 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:29:37,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:29:37,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:29:37,795 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:29:37,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:29:37,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:29:37,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:29:37,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:29:37,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:29:37,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:29:37,796 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:29:37,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:29:37,797 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:29:37,797 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:29:37,797 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:29:37,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:29:37,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:29:37,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:29:37,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:37,798 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:29:37,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:29:37,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:29:37,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:29:37,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:37,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:29:37,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:29:37,799 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:29:37,799 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:29:37,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:29:37,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:29:37,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:29:37,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:29:37,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:29:37,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:29:37,800 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 29c60028fe77c919c85938e022adc26e4c09a5802df35e9dae1aea434a543980 [2024-11-27 20:29:38,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:29:38,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:29:38,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:29:38,126 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:29:38,126 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:29:38,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loops/matrix-2-2.c [2024-11-27 20:29:41,121 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/data/04fd3d266/e3cfa73503264375805a505d03a8a607/FLAGf70ef88d8 [2024-11-27 20:29:41,360 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:29:41,361 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/sv-benchmarks/c/loops/matrix-2-2.c [2024-11-27 20:29:41,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/data/04fd3d266/e3cfa73503264375805a505d03a8a607/FLAGf70ef88d8 [2024-11-27 20:29:41,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/data/04fd3d266/e3cfa73503264375805a505d03a8a607 [2024-11-27 20:29:41,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:29:41,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:29:41,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:29:41,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:29:41,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:29:41,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f66f637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41, skipping insertion in model container [2024-11-27 20:29:41,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:29:41,847 WARN L250 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_db659a37-2e0e-4fee-becf-69469ccb4c7f/sv-benchmarks/c/loops/matrix-2-2.c[322,335] [2024-11-27 20:29:41,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:29:41,874 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:29:41,884 WARN L250 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_db659a37-2e0e-4fee-becf-69469ccb4c7f/sv-benchmarks/c/loops/matrix-2-2.c[322,335] [2024-11-27 20:29:41,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:29:41,907 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:29:41,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41 WrapperNode [2024-11-27 20:29:41,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:29:41,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:29:41,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:29:41,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:29:41,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,937 INFO L138 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2024-11-27 20:29:41,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:29:41,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:29:41,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:29:41,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:29:41,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,948 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,967 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-27 20:29:41,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,973 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,982 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:29:41,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:29:41,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:29:41,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:29:41,989 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (1/1) ... [2024-11-27 20:29:41,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:42,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:42,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:29:42,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:29:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:29:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:29:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:29:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:29:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:29:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:29:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:29:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:29:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:29:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:29:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:29:42,135 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:29:42,136 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:29:42,311 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-27 20:29:42,311 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:29:42,320 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:29:42,320 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:29:42,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:29:42 BoogieIcfgContainer [2024-11-27 20:29:42,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:29:42,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:29:42,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:29:42,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:29:42,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:29:41" (1/3) ... [2024-11-27 20:29:42,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad9a9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:29:42, skipping insertion in model container [2024-11-27 20:29:42,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:41" (2/3) ... [2024-11-27 20:29:42,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad9a9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:29:42, skipping insertion in model container [2024-11-27 20:29:42,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:29:42" (3/3) ... [2024-11-27 20:29:42,329 INFO L128 eAbstractionObserver]: Analyzing ICFG matrix-2-2.c [2024-11-27 20:29:42,345 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:29:42,347 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG matrix-2-2.c that has 1 procedures, 24 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-27 20:29:42,411 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:29:42,426 INFO L333 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, 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;@69c891d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:29:42,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:29:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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) [2024-11-27 20:29:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 20:29:42,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:42,438 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:42,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:42,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:42,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1006173840, now seen corresponding path program 1 times [2024-11-27 20:29:42,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:42,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337824874] [2024-11-27 20:29:42,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:42,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:42,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337824874] [2024-11-27 20:29:42,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337824874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:42,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:42,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:29:42,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902740774] [2024-11-27 20:29:42,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:42,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:29:42,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:42,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:29:42,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:29:42,696 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-27 20:29:42,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:42,713 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2024-11-27 20:29:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:29:42,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2024-11-27 20:29:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:42,722 INFO L225 Difference]: With dead ends: 45 [2024-11-27 20:29:42,724 INFO L226 Difference]: Without dead ends: 20 [2024-11-27 20:29:42,728 INFO L434 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 [2024-11-27 20:29:42,732 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:42,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:29:42,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-27 20:29:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-27 20:29:42,755 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) [2024-11-27 20:29:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-27 20:29:42,759 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2024-11-27 20:29:42,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:42,759 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-27 20:29:42,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-27 20:29:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-27 20:29:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 20:29:42,760 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:42,760 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:42,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:29:42,760 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:42,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash 385588425, now seen corresponding path program 1 times [2024-11-27 20:29:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454880107] [2024-11-27 20:29:42,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:42,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454880107] [2024-11-27 20:29:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454880107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:43,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:43,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:29:43,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95496376] [2024-11-27 20:29:43,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:43,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:29:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:43,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:29:43,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:29:43,144 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-27 20:29:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:43,234 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2024-11-27 20:29:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:29:43,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2024-11-27 20:29:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:43,237 INFO L225 Difference]: With dead ends: 47 [2024-11-27 20:29:43,237 INFO L226 Difference]: Without dead ends: 36 [2024-11-27 20:29:43,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:29:43,238 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:43,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:29:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-27 20:29:43,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 21. [2024-11-27 20:29:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2024-11-27 20:29:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-27 20:29:43,248 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2024-11-27 20:29:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:43,249 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-27 20:29:43,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-27 20:29:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-27 20:29:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 20:29:43,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:43,250 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:43,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:29:43,250 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:43,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:43,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1749317018, now seen corresponding path program 1 times [2024-11-27 20:29:43,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:43,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120926407] [2024-11-27 20:29:43,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:43,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:43,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120926407] [2024-11-27 20:29:43,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120926407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:43,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:43,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:29:43,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597083455] [2024-11-27 20:29:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:43,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:29:43,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:43,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:29:43,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:29:43,512 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-11-27 20:29:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:43,626 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2024-11-27 20:29:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:29:43,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2024-11-27 20:29:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:43,630 INFO L225 Difference]: With dead ends: 57 [2024-11-27 20:29:43,630 INFO L226 Difference]: Without dead ends: 31 [2024-11-27 20:29:43,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:29:43,631 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:43,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 54 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:29:43,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-27 20:29:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2024-11-27 20:29:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2024-11-27 20:29:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-27 20:29:43,635 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2024-11-27 20:29:43,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:43,636 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-27 20:29:43,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-11-27 20:29:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-27 20:29:43,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-27 20:29:43,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:43,636 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:43,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:29:43,637 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:43,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash 920963072, now seen corresponding path program 1 times [2024-11-27 20:29:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831279666] [2024-11-27 20:29:43,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:43,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:29:43,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992993778] [2024-11-27 20:29:43,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:43,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:43,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:43,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:43,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:29:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:29:43,810 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:29:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:29:43,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:29:43,891 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:29:43,892 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:29:43,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:44,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:44,100 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-27 20:29:44,133 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:29:44,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:29:44 BoogieIcfgContainer [2024-11-27 20:29:44,136 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:29:44,137 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:29:44,137 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:29:44,139 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:29:44,140 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:29:42" (3/4) ... [2024-11-27 20:29:44,141 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-27 20:29:44,197 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 11. [2024-11-27 20:29:44,259 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:29:44,259 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db659a37-2e0e-4fee-becf-69469ccb4c7f/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:29:44,260 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:29:44,260 INFO L158 Benchmark]: Toolchain (without parser) took 2574.71ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 44.5MB in the end (delta: 48.5MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2024-11-27 20:29:44,261 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:29:44,261 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.34ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 81.5MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:29:44,261 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.41ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:29:44,261 INFO L158 Benchmark]: Boogie Preprocessor took 47.30ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 78.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:29:44,262 INFO L158 Benchmark]: RCFGBuilder took 334.79ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 66.4MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:29:44,264 INFO L158 Benchmark]: TraceAbstraction took 1813.53ms. Allocated memory is still 117.4MB. Free memory was 66.0MB in the beginning and 49.6MB in the end (delta: 16.3MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2024-11-27 20:29:44,265 INFO L158 Benchmark]: Witness Printer took 122.84ms. Allocated memory is still 117.4MB. Free memory was 49.6MB in the beginning and 44.5MB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:29:44,266 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.34ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 81.5MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.41ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.30ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 78.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 334.79ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 66.4MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1813.53ms. Allocated memory is still 117.4MB. Free memory was 66.0MB in the beginning and 49.6MB in the end (delta: 16.3MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Witness Printer took 122.84ms. Allocated memory is still 117.4MB. Free memory was 49.6MB in the beginning and 44.5MB in the end (delta: 5.1MB). There was no memory consumed. 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] COND FALSE !(N_LIN >= 4000000000 / sizeof(int) || N_COL >= 4000000000 / sizeof(int)) [L21] unsigned int j,k; [L22] int matriz[N_COL][N_LIN], maior; [L24] maior = __VERIFIER_nondet_int() [L25] j=0 VAL [N_COL=-4294967295, N_LIN=-4294967295, j=0, maior=0, matriz={4:0}] [L25] COND TRUE jmaior) [L26] k++ VAL [N_COL=-4294967295, N_LIN=-4294967295, j=0, k=1, maior=0, matriz={4:0}] [L26] COND FALSE !(k