/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:19:30,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:19:30,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:19:30,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:19:30,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:19:30,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:19:30,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:19:31,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:19:31,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:19:31,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:19:31,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:19:31,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:19:31,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:19:31,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:19:31,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:19:31,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:19:31,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:19:31,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:19:31,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:19:31,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:19:31,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:19:31,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:19:31,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:19:31,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:19:31,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:19:31,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:19:31,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:19:31,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:19:31,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:19:31,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:19:31,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:19:31,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:19:31,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:19:31,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:19:31,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:19:31,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:19:31,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:19:31,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:19:31,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:19:31,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:19:31,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:19:31,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:19:31,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:19:31,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:19:31,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:19:31,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:19:31,108 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:19:31,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:19:31,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:19:31,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:19:31,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:19:31,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:19:31,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:19:31,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:19:31,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:19:31,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:19:31,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:19:31,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:19:31,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:19:31,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:19:31,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:19:31,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:19:31,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:19:31,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:19:31,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:19:31,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:19:31,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:19:31,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:19:31,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:19:31,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:19:31,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:19:31,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:19:31,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:19:31,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:19:31,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:19:31,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:19:31,426 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:19:31,427 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-14 23:19:31,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcf490864/1c89e3d8112b43359a71adf495b9f994/FLAG3bcd7646e [2020-10-14 23:19:31,960 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:19:31,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-14 23:19:31,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcf490864/1c89e3d8112b43359a71adf495b9f994/FLAG3bcd7646e [2020-10-14 23:19:32,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcf490864/1c89e3d8112b43359a71adf495b9f994 [2020-10-14 23:19:32,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:19:32,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:19:32,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:32,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:19:32,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:19:32,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:32" (1/1) ... [2020-10-14 23:19:32,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf49487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32, skipping insertion in model container [2020-10-14 23:19:32,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:32" (1/1) ... [2020-10-14 23:19:32,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:19:32,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:19:32,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:32,638 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:19:32,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:32,826 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:19:32,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32 WrapperNode [2020-10-14 23:19:32,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:32,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:19:32,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:19:32,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:19:32,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32" (1/1) ... [2020-10-14 23:19:32,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32" (1/1) ... [2020-10-14 23:19:32,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32" (1/1) ... [2020-10-14 23:19:32,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32" (1/1) ... [2020-10-14 23:19:32,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32" (1/1) ... [2020-10-14 23:19:32,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32" (1/1) ... [2020-10-14 23:19:32,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32" (1/1) ... [2020-10-14 23:19:32,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:19:32,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:19:32,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:19:32,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:19:32,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32" (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 [2020-10-14 23:19:32,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:19:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:19:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-14 23:19:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-14 23:19:32,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:19:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:19:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 23:19:32,947 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-14 23:19:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:19:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:19:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:19:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:19:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:19:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:19:32,948 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-14 23:19:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:19:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:19:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:19:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:19:33,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:19:33,369 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-14 23:19:33,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:33 BoogieIcfgContainer [2020-10-14 23:19:33,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:19:33,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:19:33,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:19:33,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:19:33,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:19:32" (1/3) ... [2020-10-14 23:19:33,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1593fc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:33, skipping insertion in model container [2020-10-14 23:19:33,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:32" (2/3) ... [2020-10-14 23:19:33,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1593fc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:33, skipping insertion in model container [2020-10-14 23:19:33,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:33" (3/3) ... [2020-10-14 23:19:33,382 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122a.c [2020-10-14 23:19:33,394 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:19:33,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:19:33,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:19:33,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:19:33,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:19:33,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:19:33,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:19:33,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:19:33,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:19:33,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:19:33,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:19:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-14 23:19:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:19:33,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:33,490 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] [2020-10-14 23:19:33,491 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:33,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:33,496 INFO L82 PathProgramCache]: Analyzing trace with hash 527256461, now seen corresponding path program 1 times [2020-10-14 23:19:33,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:33,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094327811] [2020-10-14 23:19:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:33,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:33,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:33,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:19:33,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 23:19:33,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:33,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:19:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:19:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:34,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:34,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:34,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:19:34,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:34,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:34,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:19:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:34,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:19:34,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:19:34,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:34,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 23:19:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:34,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:34,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:19:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:34,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:34,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:34,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:19:34,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:34,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:19:34,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:19:34,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094327811] [2020-10-14 23:19:34,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:19:34,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:19:34,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369248483] [2020-10-14 23:19:34,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:19:34,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:34,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:19:34,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:19:34,168 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-10-14 23:19:34,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:34,427 INFO L93 Difference]: Finished difference Result 102 states and 158 transitions. [2020-10-14 23:19:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:19:34,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 23:19:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:34,442 INFO L225 Difference]: With dead ends: 102 [2020-10-14 23:19:34,442 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:19:34,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:19:34,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:19:34,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-14 23:19:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 23:19:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-10-14 23:19:34,495 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 22 [2020-10-14 23:19:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:34,496 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-14 23:19:34,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:19:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-10-14 23:19:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:19:34,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:34,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:34,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:19:34,499 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:34,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:34,499 INFO L82 PathProgramCache]: Analyzing trace with hash 847326186, now seen corresponding path program 1 times [2020-10-14 23:19:34,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:34,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806870883] [2020-10-14 23:19:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:19:34,544 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:19:34,545 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:19:34,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:19:34,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:19:34 BoogieIcfgContainer [2020-10-14 23:19:34,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:19:34,573 INFO L168 Benchmark]: Toolchain (without parser) took 2198.14 ms. Allocated memory was 147.8 MB in the beginning and 233.3 MB in the end (delta: 85.5 MB). Free memory was 104.1 MB in the beginning and 191.2 MB in the end (delta: -87.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 23:19:34,574 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:19:34,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.16 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 103.7 MB in the beginning and 182.1 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:34,576 INFO L168 Benchmark]: Boogie Preprocessor took 52.96 ms. Allocated memory is still 206.0 MB. Free memory was 182.1 MB in the beginning and 179.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:34,577 INFO L168 Benchmark]: RCFGBuilder took 492.50 ms. Allocated memory is still 206.0 MB. Free memory was 179.3 MB in the beginning and 153.2 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:34,577 INFO L168 Benchmark]: TraceAbstraction took 1195.47 ms. Allocated memory was 206.0 MB in the beginning and 233.3 MB in the end (delta: 27.3 MB). Free memory was 153.2 MB in the beginning and 191.2 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 23:19:34,581 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 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.16 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 103.7 MB in the beginning and 182.1 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.96 ms. Allocated memory is still 206.0 MB. Free memory was 182.1 MB in the beginning and 179.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.50 ms. Allocated memory is still 206.0 MB. Free memory was 179.3 MB in the beginning and 153.2 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1195.47 ms. Allocated memory was 206.0 MB in the beginning and 233.3 MB in the end (delta: 27.3 MB). Free memory was 153.2 MB in the beginning and 191.2 MB in the end (delta: -38.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 123]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 108, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L117] float x = 1.0f / 0.0f; [L118] float y = __VERIFIER_nondet_float(); [L119] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L119] RET, EXPR fmod_float(x, y) [L119] float res = fmod_float(x, y); [L122] CALL, EXPR isnan_float(res) [L108] return x != x; [L122] RET, EXPR isnan_float(res) [L122] COND TRUE !isnan_float(res) [L123] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 8 SDslu, 55 SDs, 0 SdLazy, 71 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...