./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4e999359b895f3090fa3a0a394d4e8b87ebbe801b1ab5ed9c028edec94c7c83 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:47:47,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:47:47,391 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:47:47,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:47:47,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:47:47,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:47:47,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:47:47,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:47:47,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:47:47,460 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:47:47,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:47:47,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:47:47,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:47:47,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:47:47,463 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:47:47,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:47:47,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:47:47,463 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:47:47,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:47:47,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:47:47,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:47:47,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:47:47,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:47:47,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:47:47,465 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:47:47,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:47:47,465 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:47:47,465 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:47:47,466 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:47:47,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:47:47,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:47:47,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:47:47,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:47:47,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:47:47,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:47:47,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:47:47,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:47:47,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:47:47,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:47:47,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:47:47,469 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:47:47,469 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:47:47,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:47:47,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:47:47,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:47:47,469 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:47:47,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:47:47,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:47:47,470 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4e999359b895f3090fa3a0a394d4e8b87ebbe801b1ab5ed9c028edec94c7c83 [2024-11-28 03:47:47,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:47:47,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:47:47,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:47:47,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:47:47,848 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:47:47,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2024-11-28 03:47:51,282 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/data/3a296bbdd/fea205171db148f3ac6139828ad4e5cc/FLAG32ca4022c [2024-11-28 03:47:51,667 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:47:51,668 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2024-11-28 03:47:51,681 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/data/3a296bbdd/fea205171db148f3ac6139828ad4e5cc/FLAG32ca4022c [2024-11-28 03:47:51,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/data/3a296bbdd/fea205171db148f3ac6139828ad4e5cc [2024-11-28 03:47:51,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:47:51,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:47:51,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:47:51,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:47:51,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:47:51,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:47:51" (1/1) ... [2024-11-28 03:47:51,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c85473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:51, skipping insertion in model container [2024-11-28 03:47:51,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:47:51" (1/1) ... [2024-11-28 03:47:51,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:47:51,975 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c[535,548] [2024-11-28 03:47:52,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:47:52,032 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:47:52,049 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound1.c[535,548] [2024-11-28 03:47:52,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:47:52,096 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:47:52,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52 WrapperNode [2024-11-28 03:47:52,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:47:52,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:47:52,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:47:52,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:47:52,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,153 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2024-11-28 03:47:52,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:47:52,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:47:52,156 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:47:52,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:47:52,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,182 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]. [2024-11-28 03:47:52,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,193 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:47:52,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:47:52,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:47:52,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:47:52,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (1/1) ... [2024-11-28 03:47:52,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:47:52,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:52,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:47:52,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:47:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:47:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:47:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:47:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:47:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:47:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:47:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:47:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:47:52,356 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:47:52,359 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:47:52,585 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-28 03:47:52,585 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:47:52,599 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:47:52,601 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 03:47:52,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:47:52 BoogieIcfgContainer [2024-11-28 03:47:52,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:47:52,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:47:52,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:47:52,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:47:52,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:47:51" (1/3) ... [2024-11-28 03:47:52,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302d971a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:47:52, skipping insertion in model container [2024-11-28 03:47:52,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:47:52" (2/3) ... [2024-11-28 03:47:52,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302d971a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:47:52, skipping insertion in model container [2024-11-28 03:47:52,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:47:52" (3/3) ... [2024-11-28 03:47:52,623 INFO L128 eAbstractionObserver]: Analyzing ICFG fermat1-ll_unwindbound1.c [2024-11-28 03:47:52,645 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:47:52,650 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fermat1-ll_unwindbound1.c that has 3 procedures, 32 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 03:47:52,717 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:47:52,731 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@341e6a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:47:52,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:47:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:47:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:47:52,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:52,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:52,748 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:47:52,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:52,755 INFO L85 PathProgramCache]: Analyzing trace with hash 738208203, now seen corresponding path program 1 times [2024-11-28 03:47:52,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:52,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769919569] [2024-11-28 03:47:52,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:52,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:47:52,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:52,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769919569] [2024-11-28 03:47:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769919569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:47:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142926193] [2024-11-28 03:47:52,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:52,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:52,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:52,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:52,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:47:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:53,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:47:53,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:47:53,131 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:47:53,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142926193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:47:53,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:47:53,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:47:53,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373052100] [2024-11-28 03:47:53,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:47:53,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:47:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:53,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:47:53,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:47:53,176 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-28 03:47:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:53,210 INFO L93 Difference]: Finished difference Result 61 states and 94 transitions. [2024-11-28 03:47:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:47:53,216 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 18 [2024-11-28 03:47:53,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:53,229 INFO L225 Difference]: With dead ends: 61 [2024-11-28 03:47:53,229 INFO L226 Difference]: Without dead ends: 28 [2024-11-28 03:47:53,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:47:53,239 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:53,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:47:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-28 03:47:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-28 03:47:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:47:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-11-28 03:47:53,299 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 18 [2024-11-28 03:47:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:53,300 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-11-28 03:47:53,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-28 03:47:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-28 03:47:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:47:53,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:53,304 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:53,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:47:53,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:53,510 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:47:53,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1800491340, now seen corresponding path program 1 times [2024-11-28 03:47:53,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:53,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724585168] [2024-11-28 03:47:53,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:53,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:47:53,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429938214] [2024-11-28 03:47:53,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:53,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:53,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:53,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:53,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:47:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:53,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:47:53,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:47:54,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:47:54,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724585168] [2024-11-28 03:47:54,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:47:54,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429938214] [2024-11-28 03:47:54,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429938214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:47:54,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:47:54,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:47:54,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715767590] [2024-11-28 03:47:54,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:47:54,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:47:54,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:54,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:47:54,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:47:54,233 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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), 1 states have call successors, (2) [2024-11-28 03:47:55,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 03:47:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:55,954 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-11-28 03:47:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:47:55,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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), 1 states have call successors, (2) Word has length 19 [2024-11-28 03:47:55,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:55,956 INFO L225 Difference]: With dead ends: 47 [2024-11-28 03:47:55,956 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 03:47:55,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:47:55,957 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:55,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 101 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:47:55,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 03:47:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-11-28 03:47:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 32 states have internal predecessors, (44), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 03:47:55,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-11-28 03:47:55,977 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 19 [2024-11-28 03:47:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:55,978 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-11-28 03:47:55,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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), 1 states have call successors, (2) [2024-11-28 03:47:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-11-28 03:47:55,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:47:55,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:55,981 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:55,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:47:56,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:56,182 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:47:56,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:56,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1798465552, now seen corresponding path program 1 times [2024-11-28 03:47:56,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:56,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967920816] [2024-11-28 03:47:56,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:56,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:47:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967920816] [2024-11-28 03:47:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967920816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:47:56,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:47:56,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:47:56,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104279016] [2024-11-28 03:47:56,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:47:56,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:47:56,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:56,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:47:56,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:47:56,315 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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), 1 states have call successors, (2) [2024-11-28 03:47:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:56,370 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2024-11-28 03:47:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:47:56,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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), 1 states have call successors, (2) Word has length 19 [2024-11-28 03:47:56,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:56,375 INFO L225 Difference]: With dead ends: 53 [2024-11-28 03:47:56,377 INFO L226 Difference]: Without dead ends: 46 [2024-11-28 03:47:56,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:47:56,379 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:56,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 91 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:47:56,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-28 03:47:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-28 03:47:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.393939393939394) internal successors, (46), 34 states have internal predecessors, (46), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 03:47:56,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2024-11-28 03:47:56,403 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 19 [2024-11-28 03:47:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:56,403 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2024-11-28 03:47:56,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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), 1 states have call successors, (2) [2024-11-28 03:47:56,404 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2024-11-28 03:47:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:47:56,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:56,406 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:56,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:47:56,406 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:47:56,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash 884762201, now seen corresponding path program 1 times [2024-11-28 03:47:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:56,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755970499] [2024-11-28 03:47:56,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:56,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:57,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:47:57,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:57,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755970499] [2024-11-28 03:47:57,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755970499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:47:57,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556651216] [2024-11-28 03:47:57,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:57,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:57,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:57,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:57,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:47:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:57,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:47:57,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:57,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:47:57,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:47:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:47:57,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556651216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:47:57,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:47:57,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2024-11-28 03:47:57,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408207169] [2024-11-28 03:47:57,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:47:57,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:47:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:57,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:47:57,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:47:57,390 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 03:47:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:57,566 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-11-28 03:47:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:47:57,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 25 [2024-11-28 03:47:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:57,568 INFO L225 Difference]: With dead ends: 53 [2024-11-28 03:47:57,568 INFO L226 Difference]: Without dead ends: 48 [2024-11-28 03:47:57,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:47:57,569 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:57,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 133 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:47:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-28 03:47:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2024-11-28 03:47:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:47:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-28 03:47:57,590 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 25 [2024-11-28 03:47:57,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:57,590 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-28 03:47:57,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 03:47:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-28 03:47:57,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 03:47:57,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:57,591 INFO L218 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, 1, 1, 1, 1] [2024-11-28 03:47:57,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:47:57,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:57,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:47:57,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1887642954, now seen corresponding path program 1 times [2024-11-28 03:47:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:57,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456316303] [2024-11-28 03:47:57,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:57,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:47:57,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534061894] [2024-11-28 03:47:57,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:57,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:57,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:57,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:57,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:47:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:47:57,884 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:47:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:47:57,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:47:57,919 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:47:57,920 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 03:47:57,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:47:58,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:58,125 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 03:47:58,145 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:47:58,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:47:58 BoogieIcfgContainer [2024-11-28 03:47:58,148 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:47:58,149 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:47:58,149 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:47:58,149 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:47:58,150 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:47:52" (3/4) ... [2024-11-28 03:47:58,151 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 03:47:58,191 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 17. [2024-11-28 03:47:58,248 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:47:58,249 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:47:58,249 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:47:58,250 INFO L158 Benchmark]: Toolchain (without parser) took 6530.10ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 93.5MB in the beginning and 264.5MB in the end (delta: -171.0MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. [2024-11-28 03:47:58,250 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 167.8MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:47:58,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.91ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 81.8MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:47:58,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.38ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 80.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:47:58,251 INFO L158 Benchmark]: Boogie Preprocessor took 47.23ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:47:58,251 INFO L158 Benchmark]: RCFGBuilder took 398.79ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 67.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:47:58,252 INFO L158 Benchmark]: TraceAbstraction took 5540.74ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 66.5MB in the beginning and 269.4MB in the end (delta: -202.9MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2024-11-28 03:47:58,252 INFO L158 Benchmark]: Witness Printer took 99.87ms. Allocated memory is still 352.3MB. Free memory was 269.4MB in the beginning and 264.5MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:47:58,254 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 167.8MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.91ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 81.8MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.38ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 80.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.23ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 79.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 398.79ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 67.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5540.74ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 66.5MB in the beginning and 269.4MB in the end (delta: -202.9MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * Witness Printer took 99.87ms. Allocated memory is still 352.3MB. Free memory was 269.4MB in the beginning and 264.5MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L25] 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, counter=0] [L25] RET assume_abort_if_not((((long long) R - 1) * ((long long) R - 1)) < A) VAL [A=15, R=4, counter=0] [L27] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L27] RET assume_abort_if_not(A % 2 == 1) VAL [A=15, R=4, counter=0] [L29] u = ((long long) 2 * R) + 1 [L30] v = 1 [L31] r = ((long long) R * R) - A VAL [A=15, counter=0, r=1, u=9, v=1] [L34] EXPR counter++ VAL [A=15, counter=1, r=1, u=9, v=1] [L34] COND TRUE counter++<1 [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, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=15, counter=1, r=1, u=9, v=1] [L36] COND FALSE !(!(r != 0)) VAL [A=15, counter=1, r=1, u=9, v=1] [L39] EXPR counter++ VAL [A=15, counter=2, r=1, u=9, v=1] [L39] COND FALSE !(counter++<1) [L47] EXPR counter++ VAL [A=15, counter=3, r=1, u=9, v=1] [L47] COND FALSE !(counter++<1) [L34] EXPR counter++ VAL [A=15, counter=4, r=1, u=9, v=1] [L34] COND FALSE !(counter++<1) [L56] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, counter=4] [L12] COND TRUE !(cond) VAL [\old(cond)=0, counter=4] [L14] reach_error() VAL [\old(cond)=0, counter=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 238 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 128 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=3, InterpolantAutomatonStates: 19, 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, 4 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 465 SizeOfPredicates, 2 NumberOfNonLiveVariables, 202 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 29/34 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-28 03:47:58,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2062f1c-5ea4-4820-bc65-0246890208b3/bin/uautomizer-verify-aQ6SnzHsRB/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