./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.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_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya --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 96b71e4fe20331af08d1b5394215c6ca1c246124118142d0900823a256b0e31d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:29:20,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:29:20,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:29:20,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:29:20,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:29:20,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:29:20,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:29:20,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:29:20,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:29:20,414 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:29:20,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:29:20,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:29:20,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:29:20,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:29:20,417 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:29:20,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:29:20,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:29:20,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:29:20,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:29:20,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:29:20,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:29:20,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:29:20,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:29:20,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:29:20,422 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:29:20,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:29:20,423 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:29:20,433 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:29:20,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:29:20,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:29:20,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:29:20,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:29:20,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:29:20,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:29:20,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:29:20,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:29:20,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:29:20,437 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:29:20,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:29:20,438 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:29:20,438 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:29:20,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:29:20,439 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_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96b71e4fe20331af08d1b5394215c6ca1c246124118142d0900823a256b0e31d [2023-11-29 03:29:20,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:29:20,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:29:20,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:29:20,674 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:29:20,674 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:29:20,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2023-11-29 03:29:23,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:29:23,532 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:29:23,533 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2023-11-29 03:29:23,539 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/data/3ec2d7285/8fa38cb9766443c988b74587c7f282b7/FLAGb426ecb4c [2023-11-29 03:29:23,552 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/data/3ec2d7285/8fa38cb9766443c988b74587c7f282b7 [2023-11-29 03:29:23,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:29:23,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:29:23,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:29:23,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:29:23,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:29:23,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306960c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23, skipping insertion in model container [2023-11-29 03:29:23,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,581 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:29:23,698 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_13c768bb-5bbf-446b-8952-5b5df7cacaa4/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c[524,537] [2023-11-29 03:29:23,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:29:23,723 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:29:23,733 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_13c768bb-5bbf-446b-8952-5b5df7cacaa4/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c[524,537] [2023-11-29 03:29:23,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:29:23,753 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:29:23,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23 WrapperNode [2023-11-29 03:29:23,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:29:23,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:29:23,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:29:23,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:29:23,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,780 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-11-29 03:29:23,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:29:23,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:29:23,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:29:23,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:29:23,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,791 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,803 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]. [2023-11-29 03:29:23,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:29:23,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:29:23,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:29:23,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:29:23,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (1/1) ... [2023-11-29 03:29:23,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:29:23,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:29:23,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:29:23,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:29:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:29:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:29:23,879 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:29:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:29:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:29:23,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:29:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 03:29:23,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 03:29:23,938 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:29:23,940 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:29:24,075 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:29:24,101 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:29:24,101 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:29:24,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:29:24 BoogieIcfgContainer [2023-11-29 03:29:24,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:29:24,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:29:24,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:29:24,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:29:24,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:29:23" (1/3) ... [2023-11-29 03:29:24,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59060483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:29:24, skipping insertion in model container [2023-11-29 03:29:24,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:29:23" (2/3) ... [2023-11-29 03:29:24,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59060483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:29:24, skipping insertion in model container [2023-11-29 03:29:24,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:29:24" (3/3) ... [2023-11-29 03:29:24,111 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound10.c [2023-11-29 03:29:24,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:29:24,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:29:24,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:29:24,186 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;@54ea0fad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:29:24,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:29:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 03:29:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 03:29:24,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:29:24,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:24,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:29:24,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1060579028, now seen corresponding path program 1 times [2023-11-29 03:29:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:24,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713141194] [2023-11-29 03:29:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:24,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:24,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:29:24,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598611227] [2023-11-29 03:29:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:24,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:24,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:29:24,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:29:24,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:29:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:24,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:29:24,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:29:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:29:24,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:29:24,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:29:24,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713141194] [2023-11-29 03:29:24,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:29:24,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598611227] [2023-11-29 03:29:24,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598611227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:29:24,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:29:24,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:29:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247736034] [2023-11-29 03:29:24,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:29:24,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:29:24,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:29:24,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:29:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:29:24,450 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:29:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:29:24,499 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2023-11-29 03:29:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:29:24,502 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-11-29 03:29:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:29:24,510 INFO L225 Difference]: With dead ends: 42 [2023-11-29 03:29:24,510 INFO L226 Difference]: Without dead ends: 20 [2023-11-29 03:29:24,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:29:24,517 INFO L413 NwaCegarLoop]: 24 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, 24 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 [2023-11-29 03:29:24,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:29:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-29 03:29:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-29 03:29:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:29:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-11-29 03:29:24,565 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 17 [2023-11-29 03:29:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:29:24,566 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-11-29 03:29:24,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:29:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-11-29 03:29:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 03:29:24,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:29:24,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:24,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:29:24,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:24,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:29:24,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:24,775 INFO L85 PathProgramCache]: Analyzing trace with hash -778881514, now seen corresponding path program 1 times [2023-11-29 03:29:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:24,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641676358] [2023-11-29 03:29:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:24,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:29:24,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233746802] [2023-11-29 03:29:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:24,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:24,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:29:24,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:29:24,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:29:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:24,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:29:24,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:29:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:29:24,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:29:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:29:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641676358] [2023-11-29 03:29:24,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:29:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233746802] [2023-11-29 03:29:24,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233746802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:29:24,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:29:24,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:29:24,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574200430] [2023-11-29 03:29:24,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:29:24,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:29:24,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:29:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:29:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:29:24,914 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:29:24,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:29:24,931 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-11-29 03:29:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:29:24,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-29 03:29:24,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:29:24,933 INFO L225 Difference]: With dead ends: 29 [2023-11-29 03:29:24,933 INFO L226 Difference]: Without dead ends: 22 [2023-11-29 03:29:24,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:29:24,935 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:29:24,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:29:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-29 03:29:24,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-29 03:29:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:29:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-11-29 03:29:24,943 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 18 [2023-11-29 03:29:24,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:29:24,944 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-11-29 03:29:24,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:29:24,945 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-29 03:29:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 03:29:24,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:29:24,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:24,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 03:29:25,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 03:29:25,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:29:25,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash -777094054, now seen corresponding path program 1 times [2023-11-29 03:29:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:25,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807281919] [2023-11-29 03:29:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:25,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:29:25,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907979511] [2023-11-29 03:29:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:25,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:25,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:29:25,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:29:25,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:29:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:25,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:29:25,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:29:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:29:25,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:29:25,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:29:25,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807281919] [2023-11-29 03:29:25,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:29:25,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907979511] [2023-11-29 03:29:25,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907979511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:29:25,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:29:25,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:29:25,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522629437] [2023-11-29 03:29:25,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:29:25,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:29:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:29:25,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:29:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:29:25,531 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:29:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:29:25,827 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2023-11-29 03:29:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:29:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-29 03:29:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:29:25,829 INFO L225 Difference]: With dead ends: 34 [2023-11-29 03:29:25,829 INFO L226 Difference]: Without dead ends: 32 [2023-11-29 03:29:25,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:29:25,831 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:29:25,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:29:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-29 03:29:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-11-29 03:29:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 03:29:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-29 03:29:25,843 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2023-11-29 03:29:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:29:25,843 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-29 03:29:25,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:29:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-29 03:29:25,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 03:29:25,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:29:25,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:25,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:29:26,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 03:29:26,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:29:26,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:26,046 INFO L85 PathProgramCache]: Analyzing trace with hash -331201790, now seen corresponding path program 1 times [2023-11-29 03:29:26,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:26,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412130719] [2023-11-29 03:29:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:26,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:26,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:29:26,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263956395] [2023-11-29 03:29:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:26,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:26,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:29:26,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:29:26,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:29:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:26,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:29:26,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:29:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:29:26,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:29:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:29:26,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:29:26,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412130719] [2023-11-29 03:29:26,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:29:26,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263956395] [2023-11-29 03:29:26,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263956395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:29:26,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:29:26,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-11-29 03:29:26,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42757229] [2023-11-29 03:29:26,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:29:26,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:29:26,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:29:26,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:29:26,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:29:26,326 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 03:29:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:29:26,449 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-11-29 03:29:26,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:29:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-11-29 03:29:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:29:26,452 INFO L225 Difference]: With dead ends: 38 [2023-11-29 03:29:26,452 INFO L226 Difference]: Without dead ends: 33 [2023-11-29 03:29:26,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:29:26,454 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:29:26,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:29:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-29 03:29:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2023-11-29 03:29:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:29:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-29 03:29:26,465 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 24 [2023-11-29 03:29:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:29:26,465 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-29 03:29:26,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 03:29:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-29 03:29:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 03:29:26,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:29:26,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:26,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:29:26,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:26,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:29:26,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:26,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1584280999, now seen corresponding path program 1 times [2023-11-29 03:29:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:26,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159992356] [2023-11-29 03:29:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:26,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:26,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:29:26,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159950574] [2023-11-29 03:29:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:26,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:26,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:29:26,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:29:26,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:29:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:26,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:29:26,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:29:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:29:26,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:29:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:29:26,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:29:26,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159992356] [2023-11-29 03:29:26,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:29:26,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159950574] [2023-11-29 03:29:26,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159950574] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:29:26,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:29:26,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-11-29 03:29:26,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099680335] [2023-11-29 03:29:26,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:29:26,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:29:26,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:29:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:29:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:29:26,832 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 03:29:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:29:26,908 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2023-11-29 03:29:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:29:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2023-11-29 03:29:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:29:26,910 INFO L225 Difference]: With dead ends: 56 [2023-11-29 03:29:26,910 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 03:29:26,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:29:26,911 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:29:26,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 88 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:29:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 03:29:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-29 03:29:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:29:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2023-11-29 03:29:26,933 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 27 [2023-11-29 03:29:26,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:29:26,933 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2023-11-29 03:29:26,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 03:29:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2023-11-29 03:29:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 03:29:26,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:29:26,936 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:26,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 03:29:27,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:27,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:29:27,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1262136106, now seen corresponding path program 2 times [2023-11-29 03:29:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:27,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705206652] [2023-11-29 03:29:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:27,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:27,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:29:27,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178708318] [2023-11-29 03:29:27,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:29:27,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:27,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:29:27,152 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:29:27,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:29:27,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:29:27,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:29:27,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:29:27,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:29:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:29:27,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:29:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 03:29:27,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:29:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705206652] [2023-11-29 03:29:27,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:29:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178708318] [2023-11-29 03:29:27,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178708318] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:29:27,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:29:27,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 03:29:27,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222262673] [2023-11-29 03:29:27,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:29:27,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:29:27,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:29:27,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:29:27,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:29:27,518 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 03:29:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:29:27,726 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2023-11-29 03:29:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:29:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 54 [2023-11-29 03:29:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:29:27,729 INFO L225 Difference]: With dead ends: 110 [2023-11-29 03:29:27,729 INFO L226 Difference]: Without dead ends: 105 [2023-11-29 03:29:27,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:29:27,731 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:29:27,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 132 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:29:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-29 03:29:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-11-29 03:29:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.1375) internal successors, (91), 80 states have internal predecessors, (91), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 03:29:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2023-11-29 03:29:27,760 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 54 [2023-11-29 03:29:27,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:29:27,760 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2023-11-29 03:29:27,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 03:29:27,761 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2023-11-29 03:29:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 03:29:27,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:29:27,764 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:27,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:29:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:27,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:29:27,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash -254685450, now seen corresponding path program 3 times [2023-11-29 03:29:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485710504] [2023-11-29 03:29:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:27,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:27,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:29:27,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993214093] [2023-11-29 03:29:27,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:29:27,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:27,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:29:27,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:29:27,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:29:28,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 03:29:28,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-29 03:29:28,480 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:29:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:29:28,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:29:28,559 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 03:29:28,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 03:29:28,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 03:29:28,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:28,765 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-11-29 03:29:28,768 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:29:28,795 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,797 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,798 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,798 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,799 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,800 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,801 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,802 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,803 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,804 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,805 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:29:28 BoogieIcfgContainer [2023-11-29 03:29:28,816 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:29:28,817 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:29:28,817 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:29:28,817 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:29:28,818 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:29:24" (3/4) ... [2023-11-29 03:29:28,819 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-29 03:29:28,828 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,829 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,830 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,830 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,831 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,832 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,832 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,833 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,834 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,834 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,835 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 03:29:28,887 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:29:28,888 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:29:28,888 INFO L158 Benchmark]: Toolchain (without parser) took 5331.75ms. Allocated memory was 140.5MB in the beginning and 195.0MB in the end (delta: 54.5MB). Free memory was 96.2MB in the beginning and 56.1MB in the end (delta: 40.1MB). Peak memory consumption was 96.4MB. Max. memory is 16.1GB. [2023-11-29 03:29:28,889 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 140.5MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:29:28,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.21ms. Allocated memory is still 140.5MB. Free memory was 96.2MB in the beginning and 85.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 03:29:28,889 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.00ms. Allocated memory is still 140.5MB. Free memory was 85.3MB in the beginning and 83.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:29:28,890 INFO L158 Benchmark]: Boogie Preprocessor took 32.85ms. Allocated memory is still 140.5MB. Free memory was 83.8MB in the beginning and 82.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:29:28,890 INFO L158 Benchmark]: RCFGBuilder took 287.00ms. Allocated memory is still 140.5MB. Free memory was 82.1MB in the beginning and 70.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 03:29:28,891 INFO L158 Benchmark]: TraceAbstraction took 4711.89ms. Allocated memory was 140.5MB in the beginning and 195.0MB in the end (delta: 54.5MB). Free memory was 70.1MB in the beginning and 61.3MB in the end (delta: 8.8MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. [2023-11-29 03:29:28,891 INFO L158 Benchmark]: Witness Printer took 70.66ms. Allocated memory is still 195.0MB. Free memory was 61.3MB in the beginning and 56.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:29:28,893 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 140.5MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.21ms. Allocated memory is still 140.5MB. Free memory was 96.2MB in the beginning and 85.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.00ms. Allocated memory is still 140.5MB. Free memory was 85.3MB in the beginning and 83.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.85ms. Allocated memory is still 140.5MB. Free memory was 83.8MB in the beginning and 82.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 287.00ms. Allocated memory is still 140.5MB. Free memory was 82.1MB in the beginning and 70.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4711.89ms. Allocated memory was 140.5MB in the beginning and 195.0MB in the end (delta: 54.5MB). Free memory was 70.1MB in the beginning and 61.3MB in the end (delta: 8.8MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. * Witness Printer took 70.66ms. Allocated memory is still 195.0MB. Free memory was 61.3MB in the beginning and 56.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(cond)=1, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [A=2603, R=52, counter=0] [L28] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L28] RET assume_abort_if_not(A % 2 == 1) VAL [A=2603, R=52, counter=0] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [A=2603, R=52, counter=0, r=101, u=105, v=1] [L34] EXPR counter++ VAL [A=2603, R=52, counter=1, r=101, u=105, v=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=1, r=101, u=105, v=1] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=1, r=101, u=105, v=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=1, r=100, u=105, v=3] [L34] EXPR counter++ VAL [A=2603, R=52, counter=2, r=100, u=105, v=3] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=2, r=100, u=105, v=3] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=2, r=100, u=105, v=3] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=2, r=97, u=105, v=5] [L34] EXPR counter++ VAL [A=2603, R=52, counter=3, r=97, u=105, v=5] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=3, r=97, u=105, v=5] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=3, r=97, u=105, v=5] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=3, r=92, u=105, v=7] [L34] EXPR counter++ VAL [A=2603, R=52, counter=4, r=92, u=105, v=7] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=4, r=92, u=105, v=7] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=4, r=92, u=105, v=7] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=4, r=85, u=105, v=9] [L34] EXPR counter++ VAL [A=2603, R=52, counter=5, r=85, u=105, v=9] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=5, r=85, u=105, v=9] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=5, r=85, u=105, v=9] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=5, r=76, u=105, v=11] [L34] EXPR counter++ VAL [A=2603, R=52, counter=6, r=76, u=105, v=11] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=6, r=76, u=105, v=11] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=6, r=76, u=105, v=11] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=6, r=65, u=105, v=13] [L34] EXPR counter++ VAL [A=2603, R=52, counter=7, r=65, u=105, v=13] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=7, r=65, u=105, v=13] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=7, r=65, u=105, v=13] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=7, r=52, u=105, v=15] [L34] EXPR counter++ VAL [A=2603, R=52, counter=8, r=52, u=105, v=15] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=8, r=52, u=105, v=15] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=8, r=52, u=105, v=15] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=8, r=37, u=105, v=17] [L34] EXPR counter++ VAL [A=2603, R=52, counter=9, r=37, u=105, v=17] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=9, r=37, u=105, v=17] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=9, r=37, u=105, v=17] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=9, r=20, u=105, v=19] [L34] EXPR counter++ VAL [A=2603, R=52, counter=10, r=20, u=105, v=19] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, R=52, counter=10, r=20, u=105, v=19] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, R=52, counter=10, r=20, u=105, v=19] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, R=52, counter=10, r=1, u=105, v=21] [L34] EXPR counter++ VAL [A=2603, R=52, counter=11, r=1, u=105, v=21] [L34] COND FALSE !(counter++<10) [L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, counter=11] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L14] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 112 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 464 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 351 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 220 IncrementalHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 113 mSDtfsCounter, 220 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 271 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 254 ConstructedInterpolants, 0 QuantifiedInterpolants, 718 SizeOfPredicates, 11 NumberOfNonLiveVariables, 497 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 82/188 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 proved your program to be incorrect! [2023-11-29 03:29:28,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c768bb-5bbf-446b-8952-5b5df7cacaa4/bin/uautomizer-verify-BQ2R08f2Ya/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE