./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 386c3e7d1ea789c9c3d2e7e38148627ea5f6d60be4bd0eecc87000a545db7275 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:16,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:16,404 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:47:16,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:16,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:16,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:16,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:16,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:16,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:16,462 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:16,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:16,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:16,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:16,465 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:16,465 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:16,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:16,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:16,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:16,485 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:16,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:16,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:16,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:16,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:16,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:16,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:16,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:16,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:16,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:16,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:16,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:16,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:16,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:16,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:16,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:16,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:16,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:16,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:16,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:16,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:16,496 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:16,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:16,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:16,498 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 386c3e7d1ea789c9c3d2e7e38148627ea5f6d60be4bd0eecc87000a545db7275 [2023-11-26 11:47:16,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:16,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:16,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:16,914 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:16,915 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:16,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c [2023-11-26 11:47:20,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:20,362 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:20,362 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c [2023-11-26 11:47:20,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/data/2f6477ec8/6cf1bc6aa96d440d988f0a5549e2e5ec/FLAGc4e6343c4 [2023-11-26 11:47:20,386 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/data/2f6477ec8/6cf1bc6aa96d440d988f0a5549e2e5ec [2023-11-26 11:47:20,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:20,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:20,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:20,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:20,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:20,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1191cecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20, skipping insertion in model container [2023-11-26 11:47:20,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:20,600 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c[712,725] [2023-11-26 11:47:20,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:20,626 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:20,640 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c[712,725] [2023-11-26 11:47:20,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:20,661 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:20,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20 WrapperNode [2023-11-26 11:47:20,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:20,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:20,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:20,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:20,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,700 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2023-11-26 11:47:20,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:20,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:20,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:20,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:20,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,727 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:47:20,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:20,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:20,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:20,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:20,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (1/1) ... [2023-11-26 11:47:20,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:20,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:20,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:20,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:47:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:20,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:47:20,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:47:20,926 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:20,950 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:21,081 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:21,105 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:21,112 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:47:21,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:21 BoogieIcfgContainer [2023-11-26 11:47:21,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:21,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:21,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:21,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:21,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:20" (1/3) ... [2023-11-26 11:47:21,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e7be54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:21, skipping insertion in model container [2023-11-26 11:47:21,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:20" (2/3) ... [2023-11-26 11:47:21,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e7be54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:21, skipping insertion in model container [2023-11-26 11:47:21,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:21" (3/3) ... [2023-11-26 11:47:21,129 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound10.c [2023-11-26 11:47:21,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:21,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:47:21,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:21,231 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f4c0ba0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:21,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:47:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:47:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:47:21,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:21,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:21,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:21,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1892700911, now seen corresponding path program 1 times [2023-11-26 11:47:21,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:21,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261466090] [2023-11-26 11:47:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:21,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:21,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:21,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261466090] [2023-11-26 11:47:21,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261466090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:21,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:21,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882752039] [2023-11-26 11:47:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:21,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:47:21,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:47:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:47:21,490 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:21,520 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2023-11-26 11:47:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:47:21,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 11:47:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:21,531 INFO L225 Difference]: With dead ends: 28 [2023-11-26 11:47:21,532 INFO L226 Difference]: Without dead ends: 13 [2023-11-26 11:47:21,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:47:21,539 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:21,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-26 11:47:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-26 11:47:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:47:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-11-26 11:47:21,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2023-11-26 11:47:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:21,580 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-11-26 11:47:21,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-26 11:47:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:47:21,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:21,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:47:21,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:21,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -115906089, now seen corresponding path program 1 times [2023-11-26 11:47:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:21,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819927986] [2023-11-26 11:47:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:21,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:21,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:21,659 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:47:21,661 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 11:47:21,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:47:21,667 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 11:47:21,671 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:47:21,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:47:21 BoogieIcfgContainer [2023-11-26 11:47:21,690 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:47:21,691 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:47:21,691 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:47:21,692 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:47:21,692 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:21" (3/4) ... [2023-11-26 11:47:21,695 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:47:21,696 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:47:21,698 INFO L158 Benchmark]: Toolchain (without parser) took 1307.45ms. Allocated memory is still 161.5MB. Free memory was 131.6MB in the beginning and 102.6MB in the end (delta: 29.0MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2023-11-26 11:47:21,698 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:21,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.54ms. Allocated memory is still 161.5MB. Free memory was 131.4MB in the beginning and 124.1MB in the end (delta: 7.3MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:21,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.70ms. Allocated memory is still 161.5MB. Free memory was 124.1MB in the beginning and 122.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:21,700 INFO L158 Benchmark]: Boogie Preprocessor took 39.90ms. Allocated memory is still 161.5MB. Free memory was 122.6MB in the beginning and 120.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:21,701 INFO L158 Benchmark]: RCFGBuilder took 371.29ms. Allocated memory is still 161.5MB. Free memory was 120.5MB in the beginning and 127.7MB in the end (delta: -7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 11:47:21,701 INFO L158 Benchmark]: TraceAbstraction took 574.30ms. Allocated memory is still 161.5MB. Free memory was 126.5MB in the beginning and 103.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:21,702 INFO L158 Benchmark]: Witness Printer took 5.62ms. Allocated memory is still 161.5MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:21,710 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.54ms. Allocated memory is still 161.5MB. Free memory was 131.4MB in the beginning and 124.1MB in the end (delta: 7.3MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.70ms. Allocated memory is still 161.5MB. Free memory was 124.1MB in the beginning and 122.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.90ms. Allocated memory is still 161.5MB. Free memory was 122.6MB in the beginning and 120.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.29ms. Allocated memory is still 161.5MB. Free memory was 120.5MB in the beginning and 127.7MB in the end (delta: -7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 574.30ms. Allocated memory is still 161.5MB. Free memory was 126.5MB in the beginning and 103.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.62ms. Allocated memory is still 161.5MB. Free memory is still 102.6MB. 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 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=10) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=10) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 11:47:21,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 386c3e7d1ea789c9c3d2e7e38148627ea5f6d60be4bd0eecc87000a545db7275 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:24,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:24,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 11:47:24,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:24,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:24,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:24,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:24,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:24,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:24,739 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:24,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:24,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:24,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:24,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:24,744 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:24,745 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:24,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:24,746 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:24,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:24,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:24,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:24,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:24,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:24,750 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:47:24,751 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:47:24,751 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:47:24,752 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:24,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:24,753 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:24,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:24,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:24,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:24,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:24,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:24,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:24,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:24,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:24,759 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:47:24,759 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:47:24,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:24,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:24,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:24,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:24,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:24,761 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:47:24,762 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 386c3e7d1ea789c9c3d2e7e38148627ea5f6d60be4bd0eecc87000a545db7275 [2023-11-26 11:47:25,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:25,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:25,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:25,245 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:25,246 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:25,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c [2023-11-26 11:47:28,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:28,832 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:28,833 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c [2023-11-26 11:47:28,842 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/data/e8638ff25/548f0fe448194c84bc7c186dab0e7675/FLAGfaab18f24 [2023-11-26 11:47:28,857 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/data/e8638ff25/548f0fe448194c84bc7c186dab0e7675 [2023-11-26 11:47:28,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:28,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:28,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:28,864 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:28,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:28,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:28" (1/1) ... [2023-11-26 11:47:28,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7b5e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:28, skipping insertion in model container [2023-11-26 11:47:28,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:28" (1/1) ... [2023-11-26 11:47:28,894 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:29,063 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c[712,725] [2023-11-26 11:47:29,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:29,102 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:29,118 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c[712,725] [2023-11-26 11:47:29,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:29,155 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:29,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29 WrapperNode [2023-11-26 11:47:29,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:29,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:29,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:29,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:29,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,212 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-11-26 11:47:29,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:29,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:29,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:29,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:29,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,259 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:47:29,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:29,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:29,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:29,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:29,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (1/1) ... [2023-11-26 11:47:29,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:29,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:29,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:29,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:29,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:29,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:47:29,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:29,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:29,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:47:29,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:47:29,478 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:29,480 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:30,659 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:30,710 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:30,716 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:47:30,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:30 BoogieIcfgContainer [2023-11-26 11:47:30,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:30,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:30,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:30,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:30,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:28" (1/3) ... [2023-11-26 11:47:30,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f43f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:30, skipping insertion in model container [2023-11-26 11:47:30,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:29" (2/3) ... [2023-11-26 11:47:30,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f43f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:30, skipping insertion in model container [2023-11-26 11:47:30,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:30" (3/3) ... [2023-11-26 11:47:30,731 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound10.c [2023-11-26 11:47:30,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:30,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:47:30,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:30,829 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5253716d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:30,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:47:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:47:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:47:30,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:30,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:30,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:30,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1892700911, now seen corresponding path program 1 times [2023-11-26 11:47:30,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:30,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513173786] [2023-11-26 11:47:30,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:30,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:30,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:30,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:30,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 11:47:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:31,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:47:31,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:31,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:31,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:47:31,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513173786] [2023-11-26 11:47:31,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513173786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:31,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:31,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:31,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964870840] [2023-11-26 11:47:31,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:31,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:47:31,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:47:31,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:47:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:47:31,526 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:31,576 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2023-11-26 11:47:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:47:31,580 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 11:47:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:31,588 INFO L225 Difference]: With dead ends: 28 [2023-11-26 11:47:31,588 INFO L226 Difference]: Without dead ends: 13 [2023-11-26 11:47:31,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:47:31,596 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:31,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-26 11:47:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-26 11:47:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:47:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-11-26 11:47:31,636 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2023-11-26 11:47:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:31,637 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-11-26 11:47:31,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-26 11:47:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:47:31,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:31,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:31,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:31,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:31,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:31,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash -115906089, now seen corresponding path program 1 times [2023-11-26 11:47:31,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:31,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534013092] [2023-11-26 11:47:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:31,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:31,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:31,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:31,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 11:47:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:32,272 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:32,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-11-26 11:47:32,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1268080506] [2023-11-26 11:47:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:32,641 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-26 11:47:32,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/cvc4 [2023-11-26 11:47:32,669 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-26 11:47:32,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_287a0d5e-cea2-4310-a928-7389d6dacd78/bin/uautomizer-verify-VRDe98Ueme/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-26 11:47:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:33,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:47:33,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:04,496 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-26 11:48:12,703 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-26 11:48:20,946 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)