/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-benchs/zonotope_loose.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:05:24,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:05:24,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:05:24,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:05:24,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:05:24,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:05:24,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:05:24,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:05:24,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:05:24,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:05:24,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:05:24,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:05:24,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:05:24,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:05:24,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:05:24,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:05:24,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:05:24,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:05:24,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:05:24,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:05:24,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:05:24,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:05:24,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:05:24,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:05:24,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:05:24,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:05:24,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:05:24,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:05:24,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:05:24,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:05:24,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:05:24,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:05:24,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:05:24,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:05:24,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:05:24,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:05:24,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:05:24,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:05:24,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:05:24,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:05:24,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:05:24,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:05:24,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:05:24,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:05:24,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:05:24,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:05:24,277 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:05:24,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:05:24,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:05:24,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:05:24,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:05:24,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:05:24,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:05:24,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:05:24,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:05:24,281 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:05:24,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:05:24,281 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:05:24,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:05:24,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:05:24,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:05:24,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:05:24,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:05:24,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:05:24,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:05:24,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:05:24,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:05:24,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:05:24,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:05:24,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:05:24,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:05:24,287 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-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:05:24,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:05:24,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:05:24,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:05:24,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:05:24,789 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:05:24,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2020-10-29 09:05:24,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/258d118f0/6126b575277d4a119a6f445f259a640d/FLAGeec177cab [2020-10-29 09:05:25,519 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:05:25,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2020-10-29 09:05:25,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/258d118f0/6126b575277d4a119a6f445f259a640d/FLAGeec177cab [2020-10-29 09:05:25,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/258d118f0/6126b575277d4a119a6f445f259a640d [2020-10-29 09:05:25,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:05:25,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:05:25,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:05:25,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:05:25,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:05:25,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:05:25" (1/1) ... [2020-10-29 09:05:25,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4918ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:25, skipping insertion in model container [2020-10-29 09:05:25,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:05:25" (1/1) ... [2020-10-29 09:05:25,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:05:25,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:05:26,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:05:26,104 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:05:26,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:05:26,154 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:05:26,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26 WrapperNode [2020-10-29 09:05:26,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:05:26,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:05:26,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:05:26,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:05:26,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26" (1/1) ... [2020-10-29 09:05:26,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26" (1/1) ... [2020-10-29 09:05:26,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26" (1/1) ... [2020-10-29 09:05:26,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26" (1/1) ... [2020-10-29 09:05:26,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26" (1/1) ... [2020-10-29 09:05:26,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26" (1/1) ... [2020-10-29 09:05:26,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26" (1/1) ... [2020-10-29 09:05:26,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:05:26,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:05:26,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:05:26,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:05:26,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:05:26,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:05:26,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:05:26,266 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:05:26,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:05:26,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:05:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:05:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:05:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:05:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:05:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:05:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:05:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:05:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:05:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:05:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:05:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:05:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:05:26,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:05:26,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:05:26,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:05:26,604 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 09:05:26,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:05:26 BoogieIcfgContainer [2020-10-29 09:05:26,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:05:26,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:05:26,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:05:26,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:05:26,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:05:25" (1/3) ... [2020-10-29 09:05:26,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9e3129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:05:26, skipping insertion in model container [2020-10-29 09:05:26,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:26" (2/3) ... [2020-10-29 09:05:26,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9e3129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:05:26, skipping insertion in model container [2020-10-29 09:05:26,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:05:26" (3/3) ... [2020-10-29 09:05:26,629 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2020-10-29 09:05:26,663 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:05:26,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:05:26,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:05:26,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:05:26,763 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:05:26,763 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:05:26,764 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:05:26,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:05:26,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:05:26,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:05:26,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:05:26,794 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-29 09:05:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 09:05:26,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:26,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:26,803 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:26,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:26,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2053511791, now seen corresponding path program 1 times [2020-10-29 09:05:26,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:26,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081911259] [2020-10-29 09:05:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:27,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:05:27,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 09:05:27,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:27,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:27,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:05:27,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 09:05:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 09:05:27,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 09:05:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:27,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:27,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:27,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:27,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:05:27,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:27,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:27,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:27,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:05:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:05:27,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081911259] [2020-10-29 09:05:27,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:05:27,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:05:27,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79233530] [2020-10-29 09:05:27,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:05:27,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:05:27,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:05:27,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:05:27,507 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2020-10-29 09:05:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:05:27,753 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-10-29 09:05:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:05:27,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-29 09:05:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:05:27,764 INFO L225 Difference]: With dead ends: 39 [2020-10-29 09:05:27,764 INFO L226 Difference]: Without dead ends: 19 [2020-10-29 09:05:27,768 INFO L677 BasicCegarLoop]: 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 [2020-10-29 09:05:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-29 09:05:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-29 09:05:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-29 09:05:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-10-29 09:05:27,810 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2020-10-29 09:05:27,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:05:27,810 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-10-29 09:05:27,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:05:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-10-29 09:05:27,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 09:05:27,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:27,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:05:27,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:05:27,812 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:27,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1585286644, now seen corresponding path program 1 times [2020-10-29 09:05:27,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:27,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313942696] [2020-10-29 09:05:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:05:27,832 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:05:27,832 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:05:27,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:05:27,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:05:27 BoogieIcfgContainer [2020-10-29 09:05:27,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:05:27,856 INFO L168 Benchmark]: Toolchain (without parser) took 1979.79 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 101.4 MB in the beginning and 132.6 MB in the end (delta: -31.2 MB). Peak memory consumption was 1.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:05:27,857 INFO L168 Benchmark]: CDTParser took 1.40 ms. Allocated memory is still 125.8 MB. Free memory is still 84.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:05:27,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.75 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 91.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:05:27,861 INFO L168 Benchmark]: Boogie Preprocessor took 32.97 ms. Allocated memory is still 125.8 MB. Free memory was 91.0 MB in the beginning and 89.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:05:27,862 INFO L168 Benchmark]: RCFGBuilder took 416.61 ms. Allocated memory is still 125.8 MB. Free memory was 89.6 MB in the beginning and 74.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:05:27,864 INFO L168 Benchmark]: TraceAbstraction took 1241.98 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 74.5 MB in the beginning and 132.6 MB in the end (delta: -58.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:05:27,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40 ms. Allocated memory is still 125.8 MB. Free memory is still 84.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.75 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 91.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.97 ms. Allocated memory is still 125.8 MB. Free memory was 91.0 MB in the beginning and 89.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 416.61 ms. Allocated memory is still 125.8 MB. Free memory was 89.6 MB in the beginning and 74.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1241.98 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 74.5 MB in the beginning and 132.6 MB in the end (delta: -58.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L1] int __return_main; [L12] int __return_76; [L15] double main__x; [L16] double main__y; [L17] main__x = __VERIFIER_nondet_double() [L18] int main____CPAchecker_TMP_0; [L19] COND TRUE main__x >= 0.0 [L21] COND TRUE main__x <= 10.0 [L23] main____CPAchecker_TMP_0 = 1 [L24] COND TRUE main____CPAchecker_TMP_0 != 0 [L26] main__y = (main__x * main__x) - main__x [L27] COND TRUE main__y >= 0 [L29] main__y = main__x / 10.0 [L31] int main____CPAchecker_TMP_1; [L32] COND FALSE !(main__y >= 0.0) [L58] main____CPAchecker_TMP_1 = 0 [L39] int __tmp_1; [L40] __tmp_1 = main____CPAchecker_TMP_1 [L41] int __VERIFIER_assert__cond; [L42] __VERIFIER_assert__cond = __tmp_1 [L43] COND TRUE __VERIFIER_assert__cond == 0 [L45] CALL reach_error() [L4] __assert_fail("0", "zonotope_loose.c.v+cfa-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 23 SDslu, 20 SDs, 0 SdLazy, 51 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 896 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 Received shutdown request...