/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0682b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:46:20,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:46:20,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:46:20,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:46:20,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:46:20,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:46:20,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:46:20,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:46:20,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:46:20,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:46:20,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:46:20,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:46:20,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:46:21,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:46:21,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:46:21,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:46:21,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:46:21,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:46:21,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:46:21,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:46:21,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:46:21,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:46:21,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:46:21,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:46:21,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:46:21,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:46:21,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:46:21,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:46:21,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:46:21,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:46:21,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:46:21,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:46:21,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:46:21,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:46:21,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:46:21,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:46:21,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:46:21,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:46:21,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:46:21,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:46:21,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:46:21,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:46:21,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:46:21,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:46:21,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:46:21,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:46:21,098 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:46:21,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:46:21,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:46:21,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:46:21,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:46:21,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:46:21,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:46:21,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:46:21,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:46:21,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:46:21,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:46:21,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:46:21,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:46:21,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:46:21,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:46:21,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:46:21,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:46:21,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:46:21,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:46:21,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:46:21,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:46:21,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:46:21,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:46:21,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:46:21,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:46:21,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:46:21,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:46:21,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:46:21,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:46:21,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:46:21,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:46:21,460 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0682b.c [2020-10-14 04:46:21,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf8214151/be6e9fab8879454e813c4d07b4b393a6/FLAG3088006af [2020-10-14 04:46:21,951 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:46:21,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0682b.c [2020-10-14 04:46:21,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf8214151/be6e9fab8879454e813c4d07b4b393a6/FLAG3088006af [2020-10-14 04:46:22,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf8214151/be6e9fab8879454e813c4d07b4b393a6 [2020-10-14 04:46:22,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:46:22,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:46:22,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:22,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:46:22,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:46:22,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:22" (1/1) ... [2020-10-14 04:46:22,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444ebb92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22, skipping insertion in model container [2020-10-14 04:46:22,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:46:22" (1/1) ... [2020-10-14 04:46:22,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:46:22,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:46:22,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:22,687 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:46:22,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:46:22,858 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:46:22,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22 WrapperNode [2020-10-14 04:46:22,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:46:22,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:46:22,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:46:22,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:46:22,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22" (1/1) ... [2020-10-14 04:46:22,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22" (1/1) ... [2020-10-14 04:46:22,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22" (1/1) ... [2020-10-14 04:46:22,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22" (1/1) ... [2020-10-14 04:46:22,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22" (1/1) ... [2020-10-14 04:46:22,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22" (1/1) ... [2020-10-14 04:46:22,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22" (1/1) ... [2020-10-14 04:46:22,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:46:22,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:46:22,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:46:22,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:46:22,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:46:23,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:46:23,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:46:23,003 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-14 04:46:23,003 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-14 04:46:23,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-14 04:46:23,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-14 04:46:23,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-14 04:46:23,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:46:23,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:46:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:46:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-14 04:46:23,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:46:23,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:46:23,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:46:23,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:46:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:46:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:46:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-14 04:46:23,008 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-14 04:46:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-14 04:46:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-14 04:46:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:46:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:46:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 04:46:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:46:23,733 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:46:23,733 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-14 04:46:23,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:23 BoogieIcfgContainer [2020-10-14 04:46:23,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:46:23,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:46:23,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:46:23,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:46:23,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:46:22" (1/3) ... [2020-10-14 04:46:23,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6938b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:23, skipping insertion in model container [2020-10-14 04:46:23,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:46:22" (2/3) ... [2020-10-14 04:46:23,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6938b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:46:23, skipping insertion in model container [2020-10-14 04:46:23,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:46:23" (3/3) ... [2020-10-14 04:46:23,749 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0682b.c [2020-10-14 04:46:23,761 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:46:23,770 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:46:23,787 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:46:23,820 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:46:23,820 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:46:23,820 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:46:23,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:46:23,821 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:46:23,821 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:46:23,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:46:23,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:46:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2020-10-14 04:46:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 04:46:23,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:23,864 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] [2020-10-14 04:46:23,865 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:23,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:23,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1752602122, now seen corresponding path program 1 times [2020-10-14 04:46:23,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:23,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121251974] [2020-10-14 04:46:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:24,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:24,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:24,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:24,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 04:46:24,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:46:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-14 04:46:24,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:24,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 04:46:24,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:24,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:46:24,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:24,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:24,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:24,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:24,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:46:24,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:24,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:24,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:46:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:24,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:24,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:46:24,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:24,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:46:24,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:24,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:46:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:24,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:24,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 04:46:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:24,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:24,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:46:24,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:46:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:46:24,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:24,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:46:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:46:24,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121251974] [2020-10-14 04:46:24,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:24,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:46:24,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537646943] [2020-10-14 04:46:24,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:46:24,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:46:24,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:46:24,962 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 4 states. [2020-10-14 04:46:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:25,439 INFO L93 Difference]: Finished difference Result 232 states and 362 transitions. [2020-10-14 04:46:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:46:25,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 04:46:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:25,453 INFO L225 Difference]: With dead ends: 232 [2020-10-14 04:46:25,454 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 04:46:25,459 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 [2020-10-14 04:46:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 04:46:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-14 04:46:25,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 04:46:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 155 transitions. [2020-10-14 04:46:25,523 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 155 transitions. Word has length 27 [2020-10-14 04:46:25,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:25,524 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 155 transitions. [2020-10-14 04:46:25,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:46:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 155 transitions. [2020-10-14 04:46:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:46:25,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:25,526 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] [2020-10-14 04:46:25,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:46:25,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:25,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:25,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1500670579, now seen corresponding path program 1 times [2020-10-14 04:46:25,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:25,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631187657] [2020-10-14 04:46:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:25,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:25,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:46:25,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:25,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 04:46:25,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:25,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:25,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:46:25,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 04:46:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:46:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:46:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:46:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:25,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:25,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:46:25,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:46:25,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:25,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:25,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:46:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:25,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:25,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:25,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:46:25,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:25,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:46:25,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:25,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:46:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:25,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:25,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 04:46:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:46:25,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:46:25,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:46:25,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 04:46:25,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:46:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 04:46:25,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:46:25,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:46:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:46:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:46:25,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:46:25,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:46:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:46:26,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631187657] [2020-10-14 04:46:26,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:46:26,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:46:26,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424638894] [2020-10-14 04:46:26,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:46:26,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:46:26,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:46:26,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:46:26,019 INFO L87 Difference]: Start difference. First operand 115 states and 155 transitions. Second operand 5 states. [2020-10-14 04:46:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:46:26,411 INFO L93 Difference]: Finished difference Result 207 states and 286 transitions. [2020-10-14 04:46:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:46:26,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-14 04:46:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:46:26,415 INFO L225 Difference]: With dead ends: 207 [2020-10-14 04:46:26,415 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 04:46:26,417 INFO L675 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 [2020-10-14 04:46:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 04:46:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-14 04:46:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 04:46:26,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2020-10-14 04:46:26,432 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 30 [2020-10-14 04:46:26,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:46:26,432 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2020-10-14 04:46:26,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:46:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2020-10-14 04:46:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:46:26,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:46:26,434 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] [2020-10-14 04:46:26,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:46:26,435 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:46:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:46:26,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1682265256, now seen corresponding path program 1 times [2020-10-14 04:46:26,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:46:26,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244029830] [2020-10-14 04:46:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:46:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:46:26,492 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:46:26,493 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:46:26,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:46:26,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:46:26 BoogieIcfgContainer [2020-10-14 04:46:26,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:46:26,522 INFO L168 Benchmark]: Toolchain (without parser) took 4231.12 ms. Allocated memory was 147.8 MB in the beginning and 243.3 MB in the end (delta: 95.4 MB). Free memory was 103.4 MB in the beginning and 147.9 MB in the end (delta: -44.5 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:26,523 INFO L168 Benchmark]: CDTParser took 0.19 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: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 04:46:26,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.59 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 103.4 MB in the beginning and 177.2 MB in the end (delta: -73.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:26,525 INFO L168 Benchmark]: Boogie Preprocessor took 85.29 ms. Allocated memory is still 202.9 MB. Free memory was 177.2 MB in the beginning and 173.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:26,526 INFO L168 Benchmark]: RCFGBuilder took 793.10 ms. Allocated memory is still 202.9 MB. Free memory was 173.4 MB in the beginning and 124.1 MB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:26,527 INFO L168 Benchmark]: TraceAbstraction took 2778.29 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 123.2 MB in the beginning and 147.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:46:26,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 567.59 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 103.4 MB in the beginning and 177.2 MB in the end (delta: -73.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.29 ms. Allocated memory is still 202.9 MB. Free memory was 177.2 MB in the beginning and 173.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 793.10 ms. Allocated memory is still 202.9 MB. Free memory was 173.4 MB in the beginning and 124.1 MB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2778.29 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 123.2 MB in the beginning and 147.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 285]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryDOUBLEComparisonOperation at line 284. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] 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, }; [L60-L62] 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; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L276] double x = -1.0 / 0.0; [L277] double y = __VERIFIER_nondet_double(); [L279] CALL, EXPR isinf_double(x) [L246] __int32_t hx, lx; [L248] ieee_double_shape_type ew_u; [L249] ew_u.value = (x) [L250] EXPR ew_u.parts.msw [L250] (hx) = ew_u.parts.msw [L251] EXPR ew_u.parts.lsw [L251] (lx) = ew_u.parts.lsw [L253] hx &= 0x7fffffff [L254] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L255] hx = 0x7ff00000 - hx [L256] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L279] RET, EXPR isinf_double(x) [L279] EXPR isinf_double(x) && isfinite_double(y) [L279] CALL, EXPR isfinite_double(y) [L260] __int32_t hx; [L262] ieee_double_shape_type gh_u; [L263] gh_u.value = (x) [L264] EXPR gh_u.parts.msw [L264] (hx) = gh_u.parts.msw [L266] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L279] RET, EXPR isfinite_double(y) [L279] EXPR isinf_double(x) && isfinite_double(y) [L279] COND TRUE isinf_double(x) && isfinite_double(y) && y > 0.0 [L281] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L281] RET, EXPR __ieee754_atan2(y, x) [L281] double res = __ieee754_atan2(y, x); [L284] COND TRUE res != pi [L285] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 120 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 304 SDtfs, 24 SDslu, 416 SDs, 0 SdLazy, 322 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred 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, 1.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 5836 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...