/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:21:04,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:21:04,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:21:04,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:21:04,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:21:04,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:21:04,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:21:04,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:21:04,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:21:04,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:21:04,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:21:04,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:21:04,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:21:04,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:21:04,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:21:04,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:21:04,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:21:04,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:21:04,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:21:04,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:21:04,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:21:04,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:21:04,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:21:04,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:21:04,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:21:04,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:21:04,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:21:04,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:21:04,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:21:04,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:21:04,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:21:04,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:21:04,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:21:04,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:21:04,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:21:04,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:21:04,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:21:04,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:21:04,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:21:04,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:21:04,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:21:04,229 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 [2020-09-21 12:21:04,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:21:04,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:21:04,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:21:04,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:21:04,256 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:21:04,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:21:04,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:21:04,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:21:04,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:21:04,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:21:04,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:21:04,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:21:04,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:21:04,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:21:04,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:21:04,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:21:04,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:21:04,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:21:04,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:21:04,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:21:04,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:21:04,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:21:04,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:21:04,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:21:04,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:21:04,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:21:04,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:21:04,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:21:04,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:21:04,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:21:04,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:21:04,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:21:04,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:21:04,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:21:04,834 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:21:04,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-09-21 12:21:04,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/524fb19a0/52d5be38e36646af93167a3b40a8c119/FLAG031a678dc [2020-09-21 12:21:05,496 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:21:05,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-09-21 12:21:05,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/524fb19a0/52d5be38e36646af93167a3b40a8c119/FLAG031a678dc [2020-09-21 12:21:05,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/524fb19a0/52d5be38e36646af93167a3b40a8c119 [2020-09-21 12:21:05,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:21:05,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:21:05,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:21:05,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:21:05,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:21:05,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:21:05" (1/1) ... [2020-09-21 12:21:05,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:05, skipping insertion in model container [2020-09-21 12:21:05,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:21:05" (1/1) ... [2020-09-21 12:21:05,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:21:05,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:21:06,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:21:06,150 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:21:06,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:21:06,190 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:21:06,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06 WrapperNode [2020-09-21 12:21:06,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:21:06,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:21:06,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:21:06,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:21:06,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06" (1/1) ... [2020-09-21 12:21:06,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06" (1/1) ... [2020-09-21 12:21:06,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06" (1/1) ... [2020-09-21 12:21:06,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06" (1/1) ... [2020-09-21 12:21:06,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06" (1/1) ... [2020-09-21 12:21:06,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06" (1/1) ... [2020-09-21 12:21:06,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06" (1/1) ... [2020-09-21 12:21:06,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:21:06,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:21:06,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:21:06,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:21:06,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06" (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 [2020-09-21 12:21:06,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:21:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:21:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:21:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:21:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:21:06,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-21 12:21:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:21:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:21:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:21:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:21:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:21:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:21:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:21:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:21:06,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:21:06,636 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:21:06,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:21:06 BoogieIcfgContainer [2020-09-21 12:21:06,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:21:06,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:21:06,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:21:06,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:21:06,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:21:05" (1/3) ... [2020-09-21 12:21:06,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b1c123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:21:06, skipping insertion in model container [2020-09-21 12:21:06,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:21:06" (2/3) ... [2020-09-21 12:21:06,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b1c123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:21:06, skipping insertion in model container [2020-09-21 12:21:06,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:21:06" (3/3) ... [2020-09-21 12:21:06,654 INFO L109 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2020-09-21 12:21:06,664 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:21:06,674 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:21:06,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:21:06,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:21:06,724 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:21:06,724 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:21:06,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:21:06,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:21:06,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:21:06,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:21:06,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:21:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-09-21 12:21:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 12:21:06,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:06,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:06,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:06,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:06,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1796465968, now seen corresponding path program 1 times [2020-09-21 12:21:06,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:06,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39726345] [2020-09-21 12:21:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:06,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:06,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:21:06,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:06,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 12:21:06,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:21:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:21:06,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:21:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:21:06,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:21:06,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:21:06,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:21:06,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:21:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:21:06,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:21:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:21:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:21:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:21:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:21:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:21:06,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39726345] [2020-09-21 12:21:06,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:21:06,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-21 12:21:06,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474152256] [2020-09-21 12:21:06,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-21 12:21:06,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:21:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-21 12:21:07,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 12:21:07,022 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-09-21 12:21:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:21:07,052 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-09-21 12:21:07,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-21 12:21:07,054 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-21 12:21:07,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:21:07,065 INFO L225 Difference]: With dead ends: 31 [2020-09-21 12:21:07,066 INFO L226 Difference]: Without dead ends: 12 [2020-09-21 12:21:07,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-21 12:21:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-09-21 12:21:07,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-09-21 12:21:07,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-09-21 12:21:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-09-21 12:21:07,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-09-21 12:21:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:21:07,115 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-09-21 12:21:07,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-21 12:21:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-09-21 12:21:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-21 12:21:07,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:21:07,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:21:07,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:21:07,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:21:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:21:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash -108592084, now seen corresponding path program 1 times [2020-09-21 12:21:07,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:21:07,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143241739] [2020-09-21 12:21:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:21:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:21:07,144 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:21:07,144 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:21:07,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:21:07,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:21:07 BoogieIcfgContainer [2020-09-21 12:21:07,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:21:07,174 INFO L168 Benchmark]: Toolchain (without parser) took 1318.89 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 103.7 MB in the beginning and 142.6 MB in the end (delta: -38.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:21:07,175 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:21:07,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.02 ms. Allocated memory is still 147.3 MB. Free memory was 103.2 MB in the beginning and 93.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:21:07,177 INFO L168 Benchmark]: Boogie Preprocessor took 137.89 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 93.5 MB in the beginning and 180.8 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:21:07,178 INFO L168 Benchmark]: RCFGBuilder took 310.96 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 167.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:21:07,179 INFO L168 Benchmark]: TraceAbstraction took 526.90 ms. Allocated memory is still 202.4 MB. Free memory was 167.2 MB in the beginning and 142.6 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:21:07,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.02 ms. Allocated memory is still 147.3 MB. Free memory was 103.2 MB in the beginning and 93.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.89 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 93.5 MB in the beginning and 180.8 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.96 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 167.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 526.90 ms. Allocated memory is still 202.4 MB. Free memory was 167.2 MB in the beginning and 142.6 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 35, overapproximation of someBinaryArithmeticFLOAToperation at line 27. Possible FailurePath: [L18] float x = __VERIFIER_nondet_float() ; [L19] float exp = 1.0 ; [L20] float term = 1.0 ; [L21] unsigned int count = 1 ; [L22] float result = 2*(1/(1-x)) ; [L23] int temp ; [L25] COND TRUE 1 [L27] term = term * (x/count) [L28] exp = exp + term [L29] count++ [L31] temp = __VERIFIER_nondet_int() [L32] COND TRUE temp ==0 [L35] CALL __VERIFIER_assert( result >= exp ) [L12] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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...