/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 SingleStatement --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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:42:30,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:42:30,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:42:30,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:42:30,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:42:30,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:42:30,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:42:30,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:42:30,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:42:30,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:42:30,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:42:30,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:42:30,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:42:30,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:42:30,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:42:30,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:42:30,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:42:30,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:42:30,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:42:30,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:42:30,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:42:30,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:42:30,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:42:30,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:42:30,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:42:30,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:42:30,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:42:30,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:42:30,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:42:30,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:42:30,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:42:30,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:42:30,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:42:30,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:42:30,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:42:30,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:42:30,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:42:30,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:42:30,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:42:30,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:42:30,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:42:30,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:42:30,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:42:30,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:42:30,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:42:30,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:42:30,882 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:42:30,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:42:30,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:42:30,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:42:30,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:42:30,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:42:30,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:42:30,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:42:30,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:42:30,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:42:30,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:42:30,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:42:30,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:42:30,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:42:30,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:42:30,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:42:30,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:42:30,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:42:30,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:42:30,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:42:30,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:42:30,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:42:30,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:42:30,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:42:30,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:42:30,887 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 -> SingleStatement 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=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:42:31,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:42:31,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:42:31,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:42:31,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:42:31,411 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:42:31,412 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-09-25 07:42:31,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae88a9643/055113d2c4f649a58b7cb1cdf30eb9af/FLAG152e29b1c [2020-09-25 07:42:32,046 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:42:32,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-09-25 07:42:32,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae88a9643/055113d2c4f649a58b7cb1cdf30eb9af/FLAG152e29b1c [2020-09-25 07:42:32,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae88a9643/055113d2c4f649a58b7cb1cdf30eb9af [2020-09-25 07:42:32,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:42:32,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:42:32,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:32,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:42:32,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:42:32,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:32" (1/1) ... [2020-09-25 07:42:32,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c6b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32, skipping insertion in model container [2020-09-25 07:42:32,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:42:32" (1/1) ... [2020-09-25 07:42:32,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:42:32,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:42:32,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:32,684 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:42:32,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:42:32,752 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:42:32,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32 WrapperNode [2020-09-25 07:42:32,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:42:32,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:42:32,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:42:32,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:42:32,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32" (1/1) ... [2020-09-25 07:42:32,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32" (1/1) ... [2020-09-25 07:42:32,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32" (1/1) ... [2020-09-25 07:42:32,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32" (1/1) ... [2020-09-25 07:42:32,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32" (1/1) ... [2020-09-25 07:42:32,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32" (1/1) ... [2020-09-25 07:42:32,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32" (1/1) ... [2020-09-25 07:42:32,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:42:32,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:42:32,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:42:32,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:42:32,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:42:32,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:42:32,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:42:32,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-25 07:42:32,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 07:42:32,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-25 07:42:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:42:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:42:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 07:42:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-25 07:42:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:42:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 07:42:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:42:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:42:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 07:42:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-25 07:42:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:42:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:42:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:42:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:42:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 07:42:33,346 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:42:33,347 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 07:42:33,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:33 BoogieIcfgContainer [2020-09-25 07:42:33,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:42:33,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:42:33,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:42:33,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:42:33,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:42:32" (1/3) ... [2020-09-25 07:42:33,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3822a6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:33, skipping insertion in model container [2020-09-25 07:42:33,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:42:32" (2/3) ... [2020-09-25 07:42:33,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3822a6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:42:33, skipping insertion in model container [2020-09-25 07:42:33,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:42:33" (3/3) ... [2020-09-25 07:42:33,365 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-09-25 07:42:33,380 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:42:33,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:42:33,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:42:33,474 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:42:33,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:42:33,474 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:42:33,475 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:42:33,475 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:42:33,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:42:33,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:42:33,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:42:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-09-25 07:42:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 07:42:33,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:33,517 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] [2020-09-25 07:42:33,517 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:33,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:33,526 INFO L82 PathProgramCache]: Analyzing trace with hash -984491116, now seen corresponding path program 1 times [2020-09-25 07:42:33,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:33,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825076290] [2020-09-25 07:42:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:33,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:33,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:34,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:34,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 07:42:34,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:42:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-09-25 07:42:34,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:34,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 07:42:34,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 07:42:34,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:34,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:34,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:34,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:42:34,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:42:34,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:34,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:34,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:34,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:42:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:34,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:34,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 07:42:34,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:34,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:42:34,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:34,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 07:42:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 07:42:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:34,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:34,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:42:34,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:42:34,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 07:42:34,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:34,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:42:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:42:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:42:34,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825076290] [2020-09-25 07:42:34,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:34,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:42:34,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654370239] [2020-09-25 07:42:34,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:42:34,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:34,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:42:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:42:34,752 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 4 states. [2020-09-25 07:42:35,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:35,033 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2020-09-25 07:42:35,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:42:35,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-25 07:42:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:35,047 INFO L225 Difference]: With dead ends: 144 [2020-09-25 07:42:35,048 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 07:42:35,053 INFO L675 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 [2020-09-25 07:42:35,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 07:42:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 07:42:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 07:42:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2020-09-25 07:42:35,110 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 39 [2020-09-25 07:42:35,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:35,111 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2020-09-25 07:42:35,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:42:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2020-09-25 07:42:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 07:42:35,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:35,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:42:35,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:42:35,115 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:35,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1526802571, now seen corresponding path program 1 times [2020-09-25 07:42:35,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:35,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202656626] [2020-09-25 07:42:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:35,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:35,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 07:42:35,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:35,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 07:42:35,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:35,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:42:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:42:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:42:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:35,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:42:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:35,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:42:35,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:35,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:42:35,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:35,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:35,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:42:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:42:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:35,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:42:35,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:35,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 07:42:35,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:35,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:42:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:35,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 07:42:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:42:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:42:35,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:42:35,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:42:35,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:42:35,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 07:42:35,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:42:35,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:42:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:42:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:42:35,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:42:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:42:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:42:35,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202656626] [2020-09-25 07:42:35,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:42:35,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:42:35,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860516428] [2020-09-25 07:42:35,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:42:35,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:42:35,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:42:35,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:42:35,700 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 5 states. [2020-09-25 07:42:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:42:35,925 INFO L93 Difference]: Finished difference Result 96 states and 95 transitions. [2020-09-25 07:42:35,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:42:35,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-09-25 07:42:35,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:42:35,927 INFO L225 Difference]: With dead ends: 96 [2020-09-25 07:42:35,928 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 07:42:35,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:42:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 07:42:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 07:42:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 07:42:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 69 transitions. [2020-09-25 07:42:35,940 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 69 transitions. Word has length 62 [2020-09-25 07:42:35,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:42:35,941 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 69 transitions. [2020-09-25 07:42:35,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:42:35,941 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 69 transitions. [2020-09-25 07:42:35,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 07:42:35,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:42:35,944 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, 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] [2020-09-25 07:42:35,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:42:35,944 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:42:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:42:35,945 INFO L82 PathProgramCache]: Analyzing trace with hash 396797035, now seen corresponding path program 1 times [2020-09-25 07:42:35,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:42:35,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145078687] [2020-09-25 07:42:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:42:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:42:36,002 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:42:36,002 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:42:36,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:42:36,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:42:36 BoogieIcfgContainer [2020-09-25 07:42:36,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:42:36,055 INFO L168 Benchmark]: Toolchain (without parser) took 3681.55 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 101.8 MB in the beginning and 102.7 MB in the end (delta: -962.6 kB). Peak memory consumption was 93.9 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:36,056 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:42:36,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.19 ms. Allocated memory is still 138.9 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:36,058 INFO L168 Benchmark]: Boogie Preprocessor took 143.32 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.6 MB in the beginning and 179.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:36,059 INFO L168 Benchmark]: RCFGBuilder took 457.05 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.2 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:36,060 INFO L168 Benchmark]: TraceAbstraction took 2695.87 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.2 MB in the beginning and 102.7 MB in the end (delta: 53.5 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:42:36,064 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 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.19 ms. Allocated memory is still 138.9 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.32 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.6 MB in the beginning and 179.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.05 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.2 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2695.87 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.2 MB in the beginning and 102.7 MB in the end (delta: 53.5 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 27, overapproximation of bitwiseAnd at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 58, overapproximation of to_real at line 55. Possible FailurePath: [L50] double x = __VERIFIER_nondet_double(); [L53] CALL, EXPR isinf_double(x) [L17] __int32_t hx, lx; [L19] ieee_double_shape_type ew_u; [L20] ew_u.value = (x) [L21] EXPR ew_u.parts.msw [L21] (hx) = ew_u.parts.msw [L22] EXPR ew_u.parts.lsw [L22] (lx) = ew_u.parts.lsw [L24] hx &= 0x7fffffff [L25] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L26] hx = 0x7ff00000 - hx [L27] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L53] RET, EXPR isinf_double(x) [L53] !isinf_double(x) && !isnan_double(x) [L53] CALL, EXPR isnan_double(x) [L31] return x != x; [L53] RET, EXPR isnan_double(x) [L53] !isinf_double(x) && !isnan_double(x) [L53] COND TRUE !isinf_double(x) && !isnan_double(x) [L55] CALL, EXPR isfinite_double(x) [L34] __int32_t hx; [L36] ieee_double_shape_type gh_u; [L37] gh_u.value = (x) [L38] EXPR gh_u.parts.msw [L38] (hx) = gh_u.parts.msw [L40] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L55] RET, EXPR isfinite_double(x) [L55] double res = isfinite_double(x); [L58] COND TRUE res == 0.0 [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 143 SDtfs, 42 SDslu, 143 SDs, 0 SdLazy, 168 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred 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, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 8493 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...