/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-newlib/double_req_bl_0684a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:26:14,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:26:14,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:26:14,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:26:14,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:26:14,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:26:14,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:26:14,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:26:14,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:26:14,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:26:14,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:26:14,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:26:14,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:26:14,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:26:14,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:26:14,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:26:14,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:26:14,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:26:14,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:26:14,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:26:14,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:26:14,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:26:14,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:26:14,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:26:14,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:26:14,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:26:14,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:26:14,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:26:14,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:26:14,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:26:14,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:26:14,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:26:14,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:26:14,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:26:14,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:26:14,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:26:14,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:26:14,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:26:14,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:26:14,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:26:14,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:26:14,657 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 [2020-10-28 14:26:14,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:26:14,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:26:14,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:26:14,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:26:14,685 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:26:14,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:26:14,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:26:14,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:26:14,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:26:14,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:26:14,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:26:14,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:26:14,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:26:14,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:26:14,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:26:14,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:26:14,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:26:14,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:26:14,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:26:14,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:26:14,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:26:14,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:26:14,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:26:14,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:26:14,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:26:14,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:26:14,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:26:14,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:26:14,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:26:14,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:26:15,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:26:15,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:26:15,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:26:15,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:26:15,110 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:26:15,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0684a.c [2020-10-28 14:26:15,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afc58dfb0/3abd51e9e3de4733a53506e01db5d3ce/FLAG39c9de0e3 [2020-10-28 14:26:15,882 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:26:15,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0684a.c [2020-10-28 14:26:15,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afc58dfb0/3abd51e9e3de4733a53506e01db5d3ce/FLAG39c9de0e3 [2020-10-28 14:26:15,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afc58dfb0/3abd51e9e3de4733a53506e01db5d3ce [2020-10-28 14:26:15,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:26:15,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:26:15,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:15,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:26:15,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:26:15,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:15" (1/1) ... [2020-10-28 14:26:15,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171d3343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:15, skipping insertion in model container [2020-10-28 14:26:15,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:26:15" (1/1) ... [2020-10-28 14:26:15,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:26:15,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:26:16,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:16,260 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:26:16,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:26:16,402 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:26:16,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16 WrapperNode [2020-10-28 14:26:16,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:26:16,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:26:16,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:26:16,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:26:16,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16" (1/1) ... [2020-10-28 14:26:16,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16" (1/1) ... [2020-10-28 14:26:16,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16" (1/1) ... [2020-10-28 14:26:16,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16" (1/1) ... [2020-10-28 14:26:16,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16" (1/1) ... [2020-10-28 14:26:16,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16" (1/1) ... [2020-10-28 14:26:16,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16" (1/1) ... [2020-10-28 14:26:16,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:26:16,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:26:16,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:26:16,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:26:16,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16" (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 [2020-10-28 14:26:16,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:26:16,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:26:16,595 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:26:16,595 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-28 14:26:16,596 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-28 14:26:16,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-28 14:26:16,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-28 14:26:16,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-28 14:26:16,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:26:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:26:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-28 14:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-28 14:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:26:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:26:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:26:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:26:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-28 14:26:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-28 14:26:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-28 14:26:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-28 14:26:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:26:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:26:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:26:16,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:26:16,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:26:17,515 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:26:17,515 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-28 14:26:17,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:17 BoogieIcfgContainer [2020-10-28 14:26:17,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:26:17,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:26:17,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:26:17,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:26:17,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:26:15" (1/3) ... [2020-10-28 14:26:17,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b96955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:17, skipping insertion in model container [2020-10-28 14:26:17,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:26:16" (2/3) ... [2020-10-28 14:26:17,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b96955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:26:17, skipping insertion in model container [2020-10-28 14:26:17,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:26:17" (3/3) ... [2020-10-28 14:26:17,533 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684a.c [2020-10-28 14:26:17,548 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:26:17,554 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:26:17,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:26:17,619 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:26:17,619 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:26:17,619 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:26:17,620 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:26:17,620 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:26:17,620 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:26:17,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:26:17,620 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:26:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2020-10-28 14:26:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 14:26:17,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:17,669 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] [2020-10-28 14:26:17,670 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:17,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:17,681 INFO L82 PathProgramCache]: Analyzing trace with hash -986197150, now seen corresponding path program 1 times [2020-10-28 14:26:17,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:17,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685021808] [2020-10-28 14:26:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:18,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 14:26:18,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:26:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-10-28 14:26:18,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:18,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:26:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:26:18,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:18,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:18,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:26:18,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:18,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:18,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:18,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:26:18,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:26:18,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:18,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:18,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:18,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:26:18,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:18,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:18,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 14:26:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:18,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:18,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:18,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 14:26:18,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:26:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:26:18,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:18,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:26:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:26:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:26:18,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685021808] [2020-10-28 14:26:18,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:18,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:26:18,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275016216] [2020-10-28 14:26:18,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:26:18,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:18,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:26:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:26:18,877 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 4 states. [2020-10-28 14:26:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:19,407 INFO L93 Difference]: Finished difference Result 237 states and 368 transitions. [2020-10-28 14:26:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:26:19,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-28 14:26:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:19,421 INFO L225 Difference]: With dead ends: 237 [2020-10-28 14:26:19,421 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 14:26:19,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:19,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 14:26:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-28 14:26:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 14:26:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 156 transitions. [2020-10-28 14:26:19,484 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 156 transitions. Word has length 28 [2020-10-28 14:26:19,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:19,485 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 156 transitions. [2020-10-28 14:26:19,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:26:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 156 transitions. [2020-10-28 14:26:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 14:26:19,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:19,487 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] [2020-10-28 14:26:19,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:26:19,488 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:19,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:19,489 INFO L82 PathProgramCache]: Analyzing trace with hash -2111058175, now seen corresponding path program 1 times [2020-10-28 14:26:19,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:19,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890069298] [2020-10-28 14:26:19,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:19,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:19,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 14:26:19,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:19,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-28 14:26:19,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:19,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:26:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:26:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:26:19,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:19,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:26:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:19,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:19,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:26:19,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:26:19,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:19,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:19,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:26:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:19,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:19,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:26:19,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:26:19,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:19,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:26:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:19,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:19,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 14:26:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:26:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:26:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:26:20,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:26:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:26:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:26:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:26:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:26:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:26:20,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890069298] [2020-10-28 14:26:20,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:26:20,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:26:20,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623391499] [2020-10-28 14:26:20,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:26:20,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:26:20,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:26:20,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:26:20,017 INFO L87 Difference]: Start difference. First operand 116 states and 156 transitions. Second operand 5 states. [2020-10-28 14:26:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:26:20,524 INFO L93 Difference]: Finished difference Result 209 states and 288 transitions. [2020-10-28 14:26:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:26:20,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-28 14:26:20,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:26:20,532 INFO L225 Difference]: With dead ends: 209 [2020-10-28 14:26:20,533 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 14:26:20,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:26:20,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 14:26:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-28 14:26:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 14:26:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2020-10-28 14:26:20,565 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 31 [2020-10-28 14:26:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:26:20,565 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2020-10-28 14:26:20,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:26:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2020-10-28 14:26:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 14:26:20,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:26:20,568 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, 1, 1, 1, 1, 1, 1] [2020-10-28 14:26:20,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:26:20,568 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:26:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:26:20,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2032723797, now seen corresponding path program 1 times [2020-10-28 14:26:20,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:26:20,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903167987] [2020-10-28 14:26:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:26:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:26:20,720 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:26:20,721 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:26:20,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:26:20,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:26:20 BoogieIcfgContainer [2020-10-28 14:26:20,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:26:20,749 INFO L168 Benchmark]: Toolchain (without parser) took 4817.22 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 143.4 MB in the beginning and 99.5 MB in the end (delta: 43.9 MB). Peak memory consumption was 76.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:20,750 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 132.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:26:20,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.30 ms. Allocated memory is still 160.4 MB. Free memory was 142.8 MB in the beginning and 139.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:20,752 INFO L168 Benchmark]: Boogie Preprocessor took 99.66 ms. Allocated memory is still 160.4 MB. Free memory was 139.3 MB in the beginning and 136.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:20,753 INFO L168 Benchmark]: RCFGBuilder took 1015.12 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 136.2 MB in the beginning and 168.0 MB in the end (delta: -31.8 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:20,754 INFO L168 Benchmark]: TraceAbstraction took 3223.41 ms. Allocated memory is still 192.9 MB. Free memory was 167.5 MB in the beginning and 99.5 MB in the end (delta: 68.0 MB). Peak memory consumption was 68.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:26:20,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 132.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 465.30 ms. Allocated memory is still 160.4 MB. Free memory was 142.8 MB in the beginning and 139.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.66 ms. Allocated memory is still 160.4 MB. Free memory was 139.3 MB in the beginning and 136.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1015.12 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 136.2 MB in the beginning and 168.0 MB in the end (delta: -31.8 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3223.41 ms. Allocated memory is still 192.9 MB. Free memory was 167.5 MB in the beginning and 99.5 MB in the end (delta: 68.0 MB). Peak memory consumption was 68.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryDOUBLEComparisonOperation at line 287. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L278] double x = __VERIFIER_nondet_double(); [L279] double y = 1.0 / 0.0; [L282] CALL, EXPR isfinite_double(x) [L262] __int32_t hx; [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L282] RET, EXPR isfinite_double(x) [L282] isfinite_double(x) && isinf_double(y) [L282] CALL, EXPR isinf_double(y) [L248] __int32_t hx, lx; [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L282] RET, EXPR isinf_double(y) [L282] isfinite_double(x) && isinf_double(y) [L282] COND TRUE isfinite_double(x) && isinf_double(y) [L284] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; [L284] RET, EXPR __ieee754_atan2(y, x) [L284] double res = __ieee754_atan2(y, x); [L287] COND TRUE res != pi_o_2 [L288] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0684a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 28 SDslu, 414 SDs, 0 SdLazy, 321 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 7131 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...