/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 IntervalDomain -i ../sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:43:50,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:43:50,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:43:50,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:43:50,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:43:50,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:43:50,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:43:50,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:43:50,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:43:50,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:43:50,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:43:50,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:43:50,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:43:50,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:43:50,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:43:50,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:43:50,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:43:50,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:43:50,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:43:50,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:43:50,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:43:50,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:43:50,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:43:50,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:43:50,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:43:50,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:43:50,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:43:50,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:43:50,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:43:50,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:43:50,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:43:50,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:43:50,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:43:50,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:43:50,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:43:50,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:43:50,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:43:50,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:43:50,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:43:50,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:43:50,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:43:50,254 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 [2023-03-31 22:43:50,281 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:43:50,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:43:50,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:43:50,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:43:50,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:43:50,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:43:50,282 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:43:50,282 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:43:50,283 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:43:50,283 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:43:50,283 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:43:50,283 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:43:50,283 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:43:50,283 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:43:50,284 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:43:50,284 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:43:50,284 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:43:50,284 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:43:50,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:43:50,284 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:43:50,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:43:50,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:43:50,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:43:50,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:43:50,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:43:50,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:43:50,285 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:43:50,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:43:50,285 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:43:50,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:43:50,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:43:50,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:43:50,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:50,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:43:50,286 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:43:50,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:43:50,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:43:50,286 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:43:50,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:43:50,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:43:50,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:43:50,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:43:50,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:43:50,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:43:50,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:43:50,482 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:43:50,482 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:43:50,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c [2023-03-31 22:43:51,531 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:43:51,718 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:43:51,718 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation.c.v+cfa-reducer.c [2023-03-31 22:43:51,723 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c30c8100/f6b1b8393ab64c92a3541270727aee68/FLAGb3169e2e9 [2023-03-31 22:43:51,738 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c30c8100/f6b1b8393ab64c92a3541270727aee68 [2023-03-31 22:43:51,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:43:51,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:43:51,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:51,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:43:51,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:43:51,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12960d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51, skipping insertion in model container [2023-03-31 22:43:51,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:43:51,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:43:51,913 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/float-benchs/interpolation.c.v+cfa-reducer.c[1314,1327] [2023-03-31 22:43:51,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:51,931 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:43:51,951 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/float-benchs/interpolation.c.v+cfa-reducer.c[1314,1327] [2023-03-31 22:43:51,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:51,980 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:43:51,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51 WrapperNode [2023-03-31 22:43:51,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:51,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:43:51,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:43:51,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:43:51,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:52,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:52,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:52,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:52,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:52,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:52,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:52,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:43:52,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:43:52,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:43:52,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:43:52,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:52,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:52,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:43:52,048 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) [2023-03-31 22:43:52,057 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 [2023-03-31 22:43:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:43:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:43:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:43:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 22:43:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:43:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:43:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:43:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:43:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:43:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:43:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:43:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:43:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:43:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 22:43:52,161 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:43:52,163 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:43:52,376 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:43:52,390 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:43:52,390 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 22:43:52,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:52 BoogieIcfgContainer [2023-03-31 22:43:52,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:43:52,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:43:52,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:43:52,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:43:52,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:43:51" (1/3) ... [2023-03-31 22:43:52,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3dea99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:52, skipping insertion in model container [2023-03-31 22:43:52,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (2/3) ... [2023-03-31 22:43:52,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3dea99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:52, skipping insertion in model container [2023-03-31 22:43:52,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:52" (3/3) ... [2023-03-31 22:43:52,402 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation.c.v+cfa-reducer.c [2023-03-31 22:43:52,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:43:52,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:43:52,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:43:52,450 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;@62473263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:43:52,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:43:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 22:43:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 22:43:52,458 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:52,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:43:52,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:52,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1316661004, now seen corresponding path program 1 times [2023-03-31 22:43:52,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:52,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808076810] [2023-03-31 22:43:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:52,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:43:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:43:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:43:52,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:43:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808076810] [2023-03-31 22:43:52,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808076810] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:43:52,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:43:52,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 22:43:52,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635026356] [2023-03-31 22:43:52,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:43:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:43:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:43:52,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:43:52,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:43:52,777 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:43:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:43:52,855 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2023-03-31 22:43:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 22:43:52,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 22:43:52,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:43:52,867 INFO L225 Difference]: With dead ends: 34 [2023-03-31 22:43:52,867 INFO L226 Difference]: Without dead ends: 18 [2023-03-31 22:43:52,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-03-31 22:43:52,874 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:43:52,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 81 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:43:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-03-31 22:43:52,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-03-31 22:43:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:43:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-03-31 22:43:52,901 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2023-03-31 22:43:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:43:52,902 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-03-31 22:43:52,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:43:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-03-31 22:43:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 22:43:52,904 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:52,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:43:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:43:52,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:52,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1331765041, now seen corresponding path program 1 times [2023-03-31 22:43:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:52,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360570516] [2023-03-31 22:43:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:52,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:43:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:43:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:43:53,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:43:53,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360570516] [2023-03-31 22:43:53,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360570516] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:43:53,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:43:53,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:43:53,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361684953] [2023-03-31 22:43:53,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:43:53,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:43:53,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:43:53,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:43:53,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:43:53,016 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:43:53,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:43:53,028 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2023-03-31 22:43:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:43:53,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 22:43:53,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:43:53,030 INFO L225 Difference]: With dead ends: 36 [2023-03-31 22:43:53,030 INFO L226 Difference]: Without dead ends: 28 [2023-03-31 22:43:53,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:43:53,033 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 22:43:53,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 22:43:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-03-31 22:43:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2023-03-31 22:43:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:43:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-03-31 22:43:53,051 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2023-03-31 22:43:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:43:53,051 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-03-31 22:43:53,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 22:43:53,051 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-03-31 22:43:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-03-31 22:43:53,052 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:53,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:43:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:43:53,053 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:53,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1240887461, now seen corresponding path program 1 times [2023-03-31 22:43:53,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:53,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920982876] [2023-03-31 22:43:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:53,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:43:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:53,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:43:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:43:53,105 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:43:53,106 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:43:53,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 22:43:53,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 22:43:53,110 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-03-31 22:43:53,112 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:43:53,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:43:53 BoogieIcfgContainer [2023-03-31 22:43:53,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:43:53,141 INFO L158 Benchmark]: Toolchain (without parser) took 1399.54ms. Allocated memory is still 280.0MB. Free memory was 240.2MB in the beginning and 246.8MB in the end (delta: -6.6MB). Peak memory consumption was 75.6MB. Max. memory is 8.0GB. [2023-03-31 22:43:53,141 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 179.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:43:53,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.57ms. Allocated memory is still 280.0MB. Free memory was 239.7MB in the beginning and 229.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 22:43:53,142 INFO L158 Benchmark]: Boogie Preprocessor took 40.79ms. Allocated memory is still 280.0MB. Free memory was 229.2MB in the beginning and 227.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 22:43:53,142 INFO L158 Benchmark]: RCFGBuilder took 370.72ms. Allocated memory is still 280.0MB. Free memory was 227.1MB in the beginning and 214.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-03-31 22:43:53,143 INFO L158 Benchmark]: TraceAbstraction took 745.01ms. Allocated memory is still 280.0MB. Free memory was 213.4MB in the beginning and 246.8MB in the end (delta: -33.3MB). Peak memory consumption was 48.3MB. Max. memory is 8.0GB. [2023-03-31 22:43:53,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 179.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.57ms. Allocated memory is still 280.0MB. Free memory was 239.7MB in the beginning and 229.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.79ms. Allocated memory is still 280.0MB. Free memory was 229.2MB in the beginning and 227.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 370.72ms. Allocated memory is still 280.0MB. Free memory was 227.1MB in the beginning and 214.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 745.01ms. Allocated memory is still 280.0MB. Free memory was 213.4MB in the beginning and 246.8MB in the end (delta: -33.3MB). Peak memory consumption was 48.3MB. 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 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of to_real at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 36. Possible FailurePath: [L1] int __return_main; [L12] int __return_125; [L15] int main__i; [L16] float main__z; [L17] float main__t; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L20] main__t = __VERIFIER_nondet_float() [L21] int main____CPAchecker_TMP_0; [L22] EXPR main__min[0] VAL [\old(__return_125)=0, __return_125=0, __return_main=0, main__max={5:0}, main__min={4:0}, main__min[0]=60] [L22] COND TRUE main__t >= (main__min[0]) [L24] EXPR main__max[4UL] VAL [\old(__return_125)=0, __return_125=0, __return_main=0, main__max={5:0}, main__max[4UL]=61, main__min={4:0}] [L24] COND TRUE main__t <= (main__max[4UL]) [L26] main____CPAchecker_TMP_0 = 1 VAL [\old(__return_125)=0, __return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__max={5:0}, main__min={4:0}] [L27] COND TRUE main____CPAchecker_TMP_0 != 0 [L29] main__i = 0 VAL [\old(__return_125)=0, __return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={5:0}, main__min={4:0}] [L31] COND TRUE main__i < 5UL [L33] EXPR main__max[main__i] VAL [\old(__return_125)=0, __return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={5:0}, main__max[main__i]=59, main__min={4:0}] [L33] COND TRUE main__t <= (main__max[main__i]) [L36] EXPR main__min[main__i] [L36] EXPR main__max[main__i] [L36] EXPR main__min[main__i] [L36] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L37] int main____CPAchecker_TMP_1; VAL [\old(__return_125)=0, __return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={5:0}, main__min={4:0}] [L38] COND FALSE !(main__z >= 0.0) VAL [\old(__return_125)=0, __return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={5:0}, main__min={4:0}] [L64] main____CPAchecker_TMP_1 = 0 VAL [\old(__return_125)=0, __return_125=0, __return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={5:0}, main__min={4:0}] [L45] int __tmp_1; [L46] __tmp_1 = main____CPAchecker_TMP_1 [L47] int __VERIFIER_assert__cond; [L48] __VERIFIER_assert__cond = __tmp_1 VAL [\old(__return_125)=0, __VERIFIER_assert__cond=0, __return_125=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={5:0}, main__min={4:0}] [L49] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_125)=0, __VERIFIER_assert__cond=0, __return_125=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={5:0}, main__min={4:0}] [L51] reach_error() VAL [\old(__return_125)=0, __VERIFIER_assert__cond=0, __return_125=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={5:0}, main__min={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 112 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 42 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-03-31 22:43:53,169 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...