/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:01:44,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:01:44,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:01:44,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:01:44,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:01:44,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:01:44,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:01:44,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:01:44,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:01:44,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:01:44,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:01:44,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:01:44,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:01:44,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:01:44,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:01:44,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:01:44,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:01:44,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:01:44,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:01:44,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:01:44,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:01:44,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:01:44,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:01:44,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:01:44,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:01:44,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:01:44,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:01:44,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:01:44,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:01:44,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:01:44,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:01:44,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:01:44,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:01:44,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:01:44,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:01:44,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:01:44,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:01:44,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:01:44,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:01:44,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:01:44,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:01:44,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 23:01:44,277 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:01:44,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:01:44,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:01:44,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:01:44,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:01:44,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:01:44,279 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:01:44,279 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:01:44,279 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:01:44,279 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:01:44,279 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:01:44,280 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:01:44,280 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:01:44,280 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:01:44,280 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:01:44,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:01:44,280 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:01:44,280 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:01:44,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:01:44,281 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:01:44,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:01:44,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:01:44,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:01:44,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:01:44,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:01:44,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:01:44,282 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:01:44,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:01:44,283 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:01:44,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:01:44,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:01:44,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:01:44,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:01:44,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:01:44,284 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:01:44,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:01:44,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:01:44,284 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:01:44,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:01:44,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:01:44,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:01:44,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:01:44,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:01:44,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:01:44,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:01:44,494 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:01:44,494 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:01:44,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound2.c [2023-04-02 23:01:45,645 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:01:45,820 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:01:45,820 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound2.c [2023-04-02 23:01:45,825 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273c98b68/35614e3b3b1b44f6bc589523d2e97221/FLAG95f747412 [2023-04-02 23:01:45,836 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273c98b68/35614e3b3b1b44f6bc589523d2e97221 [2023-04-02 23:01:45,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:01:45,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:01:45,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:01:45,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:01:45,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:01:45,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:01:45" (1/1) ... [2023-04-02 23:01:45,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa391ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:45, skipping insertion in model container [2023-04-02 23:01:45,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:01:45" (1/1) ... [2023-04-02 23:01:45,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:01:45,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:01:45,983 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound2.c[555,568] [2023-04-02 23:01:45,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:01:46,005 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:01:46,013 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound2.c[555,568] [2023-04-02 23:01:46,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:01:46,028 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:01:46,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46 WrapperNode [2023-04-02 23:01:46,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:01:46,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:01:46,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:01:46,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:01:46,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (1/1) ... [2023-04-02 23:01:46,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (1/1) ... [2023-04-02 23:01:46,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (1/1) ... [2023-04-02 23:01:46,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (1/1) ... [2023-04-02 23:01:46,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (1/1) ... [2023-04-02 23:01:46,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (1/1) ... [2023-04-02 23:01:46,055 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (1/1) ... [2023-04-02 23:01:46,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (1/1) ... [2023-04-02 23:01:46,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:01:46,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:01:46,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:01:46,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:01:46,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (1/1) ... [2023-04-02 23:01:46,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:01:46,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:01:46,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 23:01:46,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 23:01:46,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:01:46,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:01:46,127 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:01:46,127 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 23:01:46,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 23:01:46,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:01:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:01:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:01:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:01:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:01:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-02 23:01:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 23:01:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 23:01:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:01:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:01:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:01:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:01:46,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:01:46,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:01:46,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:01:46,197 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:01:46,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:01:46,391 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:01:46,427 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:01:46,427 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 23:01:46,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:01:46 BoogieIcfgContainer [2023-04-02 23:01:46,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:01:46,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:01:46,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:01:46,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:01:46,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:01:45" (1/3) ... [2023-04-02 23:01:46,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:01:46, skipping insertion in model container [2023-04-02 23:01:46,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:01:46" (2/3) ... [2023-04-02 23:01:46,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:01:46, skipping insertion in model container [2023-04-02 23:01:46,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:01:46" (3/3) ... [2023-04-02 23:01:46,437 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound2.c [2023-04-02 23:01:46,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:01:46,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:01:46,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:01:46,520 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@46fb8add, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:01:46,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:01:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 23:01:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 23:01:46,535 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:01:46,535 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:01:46,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:01:46,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:01:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1759033188, now seen corresponding path program 1 times [2023-04-02 23:01:46,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:01:46,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845408312] [2023-04-02 23:01:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:01:46,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:01:46,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:01:46,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596392756] [2023-04-02 23:01:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:01:46,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:01:46,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:01:46,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:01:46,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:01:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:01:46,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 23:01:46,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:01:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 23:01:46,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:01:46,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:01:46,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845408312] [2023-04-02 23:01:46,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:01:46,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596392756] [2023-04-02 23:01:46,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596392756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:01:46,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:01:46,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:01:46,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16714266] [2023-04-02 23:01:46,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:01:46,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:01:46,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:01:46,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:01:46,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:01:46,914 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 23:01:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:01:47,001 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2023-04-02 23:01:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:01:47,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2023-04-02 23:01:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:01:47,010 INFO L225 Difference]: With dead ends: 49 [2023-04-02 23:01:47,011 INFO L226 Difference]: Without dead ends: 30 [2023-04-02 23:01:47,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:01:47,016 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:01:47,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 80 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 23:01:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-04-02 23:01:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-04-02 23:01:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 23:01:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-04-02 23:01:47,052 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2023-04-02 23:01:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:01:47,052 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-04-02 23:01:47,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 23:01:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-04-02 23:01:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-02 23:01:47,054 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:01:47,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:01:47,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 23:01:47,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 23:01:47,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:01:47,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:01:47,262 INFO L85 PathProgramCache]: Analyzing trace with hash 431218069, now seen corresponding path program 1 times [2023-04-02 23:01:47,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:01:47,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869121432] [2023-04-02 23:01:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:01:47,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:01:47,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:01:47,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962337485] [2023-04-02 23:01:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:01:47,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:01:47,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:01:47,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:01:47,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:01:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 23:01:47,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 23:01:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 23:01:47,387 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 23:01:47,388 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 23:01:47,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 23:01:47,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 23:01:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 23:01:47,605 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 23:01:47,608 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 23:01:47,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 11:01:47 BoogieIcfgContainer [2023-04-02 23:01:47,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 23:01:47,624 INFO L158 Benchmark]: Toolchain (without parser) took 1784.89ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 140.8MB in the beginning and 172.6MB in the end (delta: -31.7MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-04-02 23:01:47,625 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 23:01:47,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.43ms. Allocated memory is still 188.7MB. Free memory was 140.8MB in the beginning and 130.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 23:01:47,626 INFO L158 Benchmark]: Boogie Preprocessor took 27.59ms. Allocated memory is still 188.7MB. Free memory was 130.3MB in the beginning and 128.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 23:01:47,626 INFO L158 Benchmark]: RCFGBuilder took 372.23ms. Allocated memory is still 188.7MB. Free memory was 128.7MB in the beginning and 116.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 23:01:47,627 INFO L158 Benchmark]: TraceAbstraction took 1192.02ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 116.1MB in the beginning and 172.6MB in the end (delta: -56.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 23:01:47,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.43ms. Allocated memory is still 188.7MB. Free memory was 140.8MB in the beginning and 130.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.59ms. Allocated memory is still 188.7MB. Free memory was 130.3MB in the beginning and 128.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 372.23ms. Allocated memory is still 188.7MB. Free memory was 128.7MB in the beginning and 116.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1192.02ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 116.1MB in the beginning and 172.6MB in the end (delta: -56.4MB). There was no memory consumed. Max. memory is 8.0GB. * 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: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L26] CALL assume_abort_if_not(z>=0 && z<=2) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) [L26] RET assume_abort_if_not(z>=0 && z<=2) VAL [z=4294967296] [L27] k = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(k>=0 && k<=2) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) [L28] RET assume_abort_if_not(k>=0 && k<=2) VAL [k=1, z=4294967296] [L30] x = 1 [L31] y = z [L32] c = 1 VAL [c=1, k=1, x=1, y=0, z=4294967296] [L34] COND TRUE 1 VAL [c=1, k=1, x=1, y=0, z=4294967296] [L35] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L35] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, k=1, x=1, y=0, z=4294967296] [L37] COND TRUE !(c < k) VAL [c=1, k=1, x=1, y=0, z=4294967296] [L46] x = x * (z - 1) VAL [c=1, k=1, x=4294967295, y=0, z=4294967296] [L48] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 18 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, InterpolantAutomatonStates: 6, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 3 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-02 23:01:47,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...