./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_unwindbound1.c --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/fermat1-ll_unwindbound1.yml/witness.yml --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26998269 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_unwindbound1.c ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/fermat1-ll_unwindbound1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.yaml-violation-witnesses-2699826-m [2024-08-14 14:31:23,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-14 14:31:24,001 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-14 14:31:24,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-14 14:31:24,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-14 14:31:24,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-14 14:31:24,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-14 14:31:24,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-14 14:31:24,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-14 14:31:24,052 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-14 14:31:24,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-14 14:31:24,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-14 14:31:24,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-14 14:31:24,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-14 14:31:24,054 INFO L153 SettingsManager]: * Use SBE=true [2024-08-14 14:31:24,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-14 14:31:24,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-14 14:31:24,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-14 14:31:24,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-14 14:31:24,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-14 14:31:24,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-14 14:31:24,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-14 14:31:24,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-14 14:31:24,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-14 14:31:24,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-14 14:31:24,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-14 14:31:24,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-14 14:31:24,057 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-14 14:31:24,057 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-14 14:31:24,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-14 14:31:24,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-14 14:31:24,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-14 14:31:24,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-14 14:31:24,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-14 14:31:24,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-14 14:31:24,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-14 14:31:24,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-14 14:31:24,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-14 14:31:24,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-14 14:31:24,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-14 14:31:24,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-14 14:31:24,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-14 14:31:24,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-14 14:31:24,061 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-14 14:31:24,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-14 14:31:24,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-14 14:31:24,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-14 14:31:24,285 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-14 14:31:24,286 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-14 14:31:24,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/fermat1-ll_unwindbound1.yml/witness.yml [2024-08-14 14:31:24,351 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-14 14:31:24,351 INFO L274 PluginConnector]: CDTParser initialized [2024-08-14 14:31:24,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2024-08-14 14:31:25,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-14 14:31:25,704 INFO L384 CDTParser]: Found 1 translation units. [2024-08-14 14:31:25,705 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_unwindbound1.c [2024-08-14 14:31:25,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123b8109c/6822ff4b9bd3445bb10a2ff13a6f946c/FLAGda32c1a54 [2024-08-14 14:31:25,726 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123b8109c/6822ff4b9bd3445bb10a2ff13a6f946c [2024-08-14 14:31:25,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-14 14:31:25,728 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-14 14:31:25,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-14 14:31:25,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-14 14:31:25,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-14 14:31:25,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:31:24" (1/2) ... [2024-08-14 14:31:25,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d078ee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:31:25, skipping insertion in model container [2024-08-14 14:31:25,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:31:24" (1/2) ... [2024-08-14 14:31:25,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@fe09a41 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:31:25, skipping insertion in model container [2024-08-14 14:31:25,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:31:25" (2/2) ... [2024-08-14 14:31:25,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d078ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25, skipping insertion in model container [2024-08-14 14:31:25,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:31:25" (2/2) ... [2024-08-14 14:31:25,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-14 14:31:25,881 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_unwindbound1.c[535,548] [2024-08-14 14:31:25,908 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:31:25,918 INFO L200 MainTranslator]: Completed pre-run [2024-08-14 14:31:25,927 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_unwindbound1.c[535,548] [2024-08-14 14:31:25,938 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:31:25,952 INFO L204 MainTranslator]: Completed translation [2024-08-14 14:31:25,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25 WrapperNode [2024-08-14 14:31:25,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-14 14:31:25,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-14 14:31:25,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-14 14:31:25,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-14 14:31:25,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (1/1) ... [2024-08-14 14:31:25,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (1/1) ... [2024-08-14 14:31:25,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (1/1) ... [2024-08-14 14:31:25,980 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]. [2024-08-14 14:31:25,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (1/1) ... [2024-08-14 14:31:25,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (1/1) ... [2024-08-14 14:31:25,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (1/1) ... [2024-08-14 14:31:25,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (1/1) ... [2024-08-14 14:31:25,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (1/1) ... [2024-08-14 14:31:25,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-14 14:31:25,994 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-14 14:31:25,994 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-14 14:31:25,994 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-14 14:31:25,994 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (1/1) ... [2024-08-14 14:31:26,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-14 14:31:26,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-14 14:31:26,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-08-14 14:31:26,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-08-14 14:31:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-14 14:31:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-14 14:31:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-14 14:31:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-08-14 14:31:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-08-14 14:31:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-14 14:31:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-14 14:31:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-14 14:31:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-14 14:31:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-14 14:31:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-14 14:31:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-08-14 14:31:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-08-14 14:31:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-14 14:31:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-14 14:31:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-14 14:31:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-14 14:31:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-14 14:31:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-14 14:31:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-14 14:31:26,115 INFO L273 CfgBuilder]: Building ICFG [2024-08-14 14:31:26,117 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-14 14:31:26,257 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-08-14 14:31:26,257 INFO L327 CfgBuilder]: Performing block encoding [2024-08-14 14:31:26,264 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-14 14:31:26,264 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-14 14:31:26,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:31:26 BoogieIcfgContainer [2024-08-14 14:31:26,267 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-14 14:31:26,269 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-14 14:31:26,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-14 14:31:26,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-14 14:31:26,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:31:24" (1/4) ... [2024-08-14 14:31:26,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b6cb00 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 14.08 02:31:26, skipping insertion in model container [2024-08-14 14:31:26,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.08 02:31:25" (2/4) ... [2024-08-14 14:31:26,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b6cb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:31:26, skipping insertion in model container [2024-08-14 14:31:26,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:31:25" (3/4) ... [2024-08-14 14:31:26,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b6cb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:31:26, skipping insertion in model container [2024-08-14 14:31:26,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:31:26" (4/4) ... [2024-08-14 14:31:26,277 INFO L119 eAbstractionObserver]: Analyzing ICFG fermat1-ll_unwindbound1.c [2024-08-14 14:31:26,277 WARN L130 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-14 14:31:26,292 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-14 14:31:26,293 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-14 14:31:26,317 INFO L92 WitnessUtils]: Constructing product of automaton with 42 states and violation witness of the following lengths: [17] [2024-08-14 14:31:26,320 INFO L82 GeneralOperation]: Start removeDeadEnds. Operand has 42 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 29 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-08-14 14:31:26,415 INFO L88 GeneralOperation]: Finished removeDeadEnds. Reduced from 350 states to 185 states. [2024-08-14 14:31:26,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-14 14:31:26,435 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=false, 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;@6d7c0202, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 14:31:26,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-14 14:31:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2024-08-14 14:31:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-08-14 14:31:26,443 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:31:26,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-14 14:31:26,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:31:26,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:31:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1521873131, now seen corresponding path program 1 times [2024-08-14 14:31:26,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:31:26,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596003344] [2024-08-14 14:31:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:31:26,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:31:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:31:26,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-14 14:31:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:31:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-14 14:31:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:31:26,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-08-14 14:31:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:31:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-08-14 14:31:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:31:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-08-14 14:31:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 14:31:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596003344] [2024-08-14 14:31:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596003344] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 14:31:26,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 14:31:26,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 14:31:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099098868] [2024-08-14 14:31:26,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 14:31:26,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 14:31:26,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 14:31:26,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 14:31:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 14:31:26,748 INFO L87 Difference]: Start difference. First operand 185 states. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-08-14 14:31:26,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-14 14:31:26,849 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2024-08-14 14:31:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 14:31:26,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2024-08-14 14:31:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-14 14:31:26,852 INFO L225 Difference]: With dead ends: 143 [2024-08-14 14:31:26,852 INFO L226 Difference]: Without dead ends: 0 [2024-08-14 14:31:26,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 14:31:26,856 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-08-14 14:31:26,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 53 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-08-14 14:31:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-08-14 14:31:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-08-14 14:31:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 14:31:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-08-14 14:31:26,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2024-08-14 14:31:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-14 14:31:26,876 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-08-14 14:31:26,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-08-14 14:31:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-08-14 14:31:26,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-08-14 14:31:26,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-14 14:31:26,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-14 14:31:26,883 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-08-14 14:31:26,884 INFO L196 ceAbstractionStarter]: Computing trace abstraction results [2024-08-14 14:31:26,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.08 02:31:26 BoogieIcfgContainer [2024-08-14 14:31:26,888 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-14 14:31:26,888 INFO L158 Benchmark]: Toolchain (without parser) took 1160.63ms. Allocated memory is still 161.5MB. Free memory was 104.2MB in the beginning and 123.9MB in the end (delta: -19.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:31:26,889 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 161.5MB. Free memory was 127.1MB in the beginning and 126.9MB in the end (delta: 243.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:31:26,889 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:31:26,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.36ms. Allocated memory is still 161.5MB. Free memory was 104.2MB in the beginning and 92.2MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-08-14 14:31:26,891 INFO L158 Benchmark]: Boogie Preprocessor took 39.39ms. Allocated memory is still 161.5MB. Free memory was 92.2MB in the beginning and 90.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-14 14:31:26,892 INFO L158 Benchmark]: IcfgBuilder took 273.59ms. Allocated memory is still 161.5MB. Free memory was 90.1MB in the beginning and 76.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-08-14 14:31:26,892 INFO L158 Benchmark]: TraceAbstraction took 619.27ms. Allocated memory is still 161.5MB. Free memory was 75.5MB in the beginning and 123.9MB in the end (delta: -48.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:31:26,893 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 161.5MB. Free memory was 127.1MB in the beginning and 126.9MB in the end (delta: 243.4kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.36ms. Allocated memory is still 161.5MB. Free memory was 104.2MB in the beginning and 92.2MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.39ms. Allocated memory is still 161.5MB. Free memory was 92.2MB in the beginning and 90.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 273.59ms. Allocated memory is still 161.5MB. Free memory was 90.1MB in the beginning and 76.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 619.27ms. Allocated memory is still 161.5MB. Free memory was 75.5MB in the beginning and 123.9MB in the end (delta: -48.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 34 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 7/7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-08-14 14:31:26,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE