/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 --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0970a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:46:51,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:46:51,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:46:51,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:46:51,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:46:51,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:46:51,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:46:51,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:46:51,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:46:51,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:46:51,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:46:51,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:46:51,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:46:51,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:46:51,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:46:51,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:46:51,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:46:51,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:46:51,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:46:51,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:46:51,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:46:51,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:46:51,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:46:51,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:46:51,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:46:51,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:46:51,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:46:51,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:46:51,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:46:51,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:46:51,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:46:51,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:46:51,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:46:51,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:46:51,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:46:51,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:46:51,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:46:51,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:46:51,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:46:51,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:46:51,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:46:51,312 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 [2020-10-14 04:46:51,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:46:51,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:46:51,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:46:51,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:46:51,357 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:46:51,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:46:51,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:46:51,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:46:51,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:46:51,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:46:51,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:46:51,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:46:51,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:46:51,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:46:51,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:46:51,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:46:51,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:46:51,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:46:51,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:46:51,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:46:51,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:46:51,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:46:51,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:46:51,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:46:51,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:46:51,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:46:51,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:46:51,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:46:51,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:46:51,363 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.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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:46:51,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:46:51,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:46:51,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:46:51,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:46:51,662 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:46:51,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0970a.c [2020-10-14 04:46:51,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b80357ba8/3962b017ca934e4685c6e3f9f34e51fe/FLAGf58632a51 [2020-10-14 04:46:52,199 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:46:52,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0970a.c [2020-10-14 04:46:52,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b80357ba8/3962b017ca934e4685c6e3f9f34e51fe/FLAGf58632a51 [2020-10-14 04:46:52,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b80357ba8/3962b017ca934e4685c6e3f9f34e51fe [2020-10-14 04:46:52,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:46:52,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:46:52,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:52,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:46:52,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:46:52,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:52" (1/1) ... [2020-10-14 04:46:52,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b59a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:52, skipping insertion in model container [2020-10-14 04:46:52,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:52" (1/1) ... [2020-10-14 04:46:52,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:46:52,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:46:52,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:52,841 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:46:52,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:53,004 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:46:53,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53 WrapperNode [2020-10-14 04:46:53,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:53,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:46:53,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:46:53,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:46:53,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53" (1/1) ... [2020-10-14 04:46:53,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53" (1/1) ... [2020-10-14 04:46:53,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53" (1/1) ... [2020-10-14 04:46:53,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53" (1/1) ... [2020-10-14 04:46:53,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53" (1/1) ... [2020-10-14 04:46:53,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53" (1/1) ... [2020-10-14 04:46:53,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53" (1/1) ... [2020-10-14 04:46:53,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:46:53,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:46:53,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:46:53,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:46:53,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53" (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 [2020-10-14 04:46:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:46:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:46:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2020-10-14 04:46:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10 [2020-10-14 04:46:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-14 04:46:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-14 04:46:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:46:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:46:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:46:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2020-10-14 04:46:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:46:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:46:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:46:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:46:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:46:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:46:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10 [2020-10-14 04:46:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-14 04:46:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-14 04:46:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:46:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:46:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:46:53,624 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:46:53,624 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-14 04:46:53,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:53 BoogieIcfgContainer [2020-10-14 04:46:53,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:46:53,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:46:53,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:46:53,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:46:53,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:46:52" (1/3) ... [2020-10-14 04:46:53,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27829f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:53, skipping insertion in model container [2020-10-14 04:46:53,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:53" (2/3) ... [2020-10-14 04:46:53,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27829f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:53, skipping insertion in model container [2020-10-14 04:46:53,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:53" (3/3) ... [2020-10-14 04:46:53,637 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970a.c [2020-10-14 04:46:53,647 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:46:53,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:46:53,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:46:53,686 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:46:53,686 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:46:53,686 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:46:53,687 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:46:53,687 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:46:53,687 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:46:53,687 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:46:53,687 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:46:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-10-14 04:46:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:46:53,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:53,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:46:53,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:53,718 INFO L82 PathProgramCache]: Analyzing trace with hash 678744586, now seen corresponding path program 1 times [2020-10-14 04:46:53,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:53,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858511837] [2020-10-14 04:46:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:53,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:53,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:54,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:54,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:46:54,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:54,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-14 04:46:54,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:54,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:54,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 04:46:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:54,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:46:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:54,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:54,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:54,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:54,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:46:54,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:54,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:46:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:54,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:54,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:46:54,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:46:54,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:54,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:46:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 04:46:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:46:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:54,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:46:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:46:54,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858511837] [2020-10-14 04:46:54,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:54,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:46:54,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403247097] [2020-10-14 04:46:54,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:46:54,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:54,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:46:54,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:46:54,396 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2020-10-14 04:46:54,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:54,783 INFO L93 Difference]: Finished difference Result 134 states and 200 transitions. [2020-10-14 04:46:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:46:54,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-14 04:46:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:54,797 INFO L225 Difference]: With dead ends: 134 [2020-10-14 04:46:54,798 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 04:46:54,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:46:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 04:46:54,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-14 04:46:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 04:46:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2020-10-14 04:46:54,857 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 24 [2020-10-14 04:46:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:54,857 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2020-10-14 04:46:54,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:46:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2020-10-14 04:46:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 04:46:54,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:54,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:46:54,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:46:54,860 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:54,861 INFO L82 PathProgramCache]: Analyzing trace with hash 728205110, now seen corresponding path program 1 times [2020-10-14 04:46:54,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:54,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726454959] [2020-10-14 04:46:54,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:54,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:54,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:54,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:46:54,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:46:54,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:54,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:54,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:46:54,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:46:54,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:46:54,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:55,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:55,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:55,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:46:55,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:55,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:46:55,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:46:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:55,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:55,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:46:55,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:46:55,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:55,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:46:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:46:55,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 04:46:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:55,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:55,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:55,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:55,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:46:55,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:55,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:46:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:46:55,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726454959] [2020-10-14 04:46:55,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:55,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:46:55,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000144243] [2020-10-14 04:46:55,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:46:55,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:55,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:46:55,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:46:55,198 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand 5 states. [2020-10-14 04:46:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:55,623 INFO L93 Difference]: Finished difference Result 113 states and 142 transitions. [2020-10-14 04:46:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:46:55,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-14 04:46:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:55,626 INFO L225 Difference]: With dead ends: 113 [2020-10-14 04:46:55,626 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 04:46:55,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:46:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 04:46:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-14 04:46:55,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 04:46:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2020-10-14 04:46:55,640 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 25 [2020-10-14 04:46:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:55,640 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2020-10-14 04:46:55,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:46:55,641 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2020-10-14 04:46:55,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 04:46:55,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:55,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:46:55,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:46:55,642 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:55,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1733658903, now seen corresponding path program 1 times [2020-10-14 04:46:55,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:55,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375139570] [2020-10-14 04:46:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:46:55,682 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:46:55,682 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:46:55,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:46:55,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:46:55 BoogieIcfgContainer [2020-10-14 04:46:55,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:46:55,707 INFO L168 Benchmark]: Toolchain (without parser) took 3122.86 ms. Allocated memory was 148.4 MB in the beginning and 242.7 MB in the end (delta: 94.4 MB). Free memory was 102.8 MB in the beginning and 152.9 MB in the end (delta: -50.1 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:55,708 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 04:46:55,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.15 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 180.9 MB in the end (delta: -78.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:55,710 INFO L168 Benchmark]: Boogie Preprocessor took 64.09 ms. Allocated memory is still 205.5 MB. Free memory was 180.9 MB in the beginning and 177.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:55,710 INFO L168 Benchmark]: RCFGBuilder took 558.64 ms. Allocated memory is still 205.5 MB. Free memory was 177.9 MB in the beginning and 145.2 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:55,711 INFO L168 Benchmark]: TraceAbstraction took 2074.35 ms. Allocated memory was 205.5 MB in the beginning and 242.7 MB in the end (delta: 37.2 MB). Free memory was 144.3 MB in the beginning and 152.9 MB in the end (delta: -8.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:55,715 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.3 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.15 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 180.9 MB in the end (delta: -78.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.09 ms. Allocated memory is still 205.5 MB. Free memory was 180.9 MB in the beginning and 177.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 558.64 ms. Allocated memory is still 205.5 MB. Free memory was 177.9 MB in the beginning and 145.2 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2074.35 ms. Allocated memory was 205.5 MB in the beginning and 242.7 MB in the end (delta: 37.2 MB). Free memory was 144.3 MB in the beginning and 152.9 MB in the end (delta: -8.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 132, overapproximation of bitwiseAnd at line 170, overapproximation of someBinaryArithmeticDOUBLEoperation at line 133, overapproximation of someBinaryDOUBLEComparisonOperation at line 161. Possible FailurePath: [L17-L26] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L28] static const double zero = 0.0; [L111-L114] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L116] static const double zero_log10 = 0.0; [L180] double x = __VERIFIER_nondet_double(); [L182] x < 0 && isfinite_double(x) [L182] CALL, EXPR isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L182] RET, EXPR isfinite_double(x) [L182] x < 0 && isfinite_double(x) [L182] COND TRUE x < 0 && isfinite_double(x) [L184] CALL, EXPR __ieee754_log10(x) [L119] double y, z; [L120] __int32_t i, k, hx; [L121] __uint32_t lx; [L124] ieee_double_shape_type ew_u; [L125] ew_u.value = (x) [L126] EXPR ew_u.parts.msw [L126] (hx) = ew_u.parts.msw [L127] EXPR ew_u.parts.lsw [L127] (lx) = ew_u.parts.lsw [L130] k = 0 [L131] COND TRUE hx < 0x00100000 [L132] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L133] return -two54_log10 / zero_log10; [L184] RET, EXPR __ieee754_log10(x) [L184] double res = __ieee754_log10(x); [L187] CALL, EXPR isnan_double(res) [L161] return x != x; [L187] RET, EXPR isnan_double(res) [L187] COND TRUE !isnan_double(res) [L188] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 146 SDslu, 16 SDs, 0 SdLazy, 234 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 4372 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 Received shutdown request...