/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:20:39,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:20:39,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:20:39,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:20:39,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:20:39,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:20:39,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:20:39,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:20:39,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:20:39,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:20:39,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:20:39,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:20:39,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:20:39,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:20:39,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:20:39,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:20:39,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:20:39,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:20:39,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:20:39,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:20:39,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:20:39,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:20:39,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:20:39,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:20:39,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:20:39,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:20:39,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:20:39,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:20:39,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:20:39,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:20:39,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:20:39,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:20:39,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:20:39,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:20:39,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:20:39,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:20:39,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:20:39,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:20:39,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:20:39,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:20:39,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:20:39,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:20:39,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:20:39,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:20:39,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:20:39,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:20:39,626 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:20:39,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:20:39,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:20:39,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:20:39,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:20:39,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:20:39,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:20:39,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:20:39,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:20:39,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:20:39,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:20:39,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:20:39,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:20:39,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:20:39,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:20:39,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:20:39,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:20:39,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:20:39,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:20:39,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:20:39,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:20:39,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:20:39,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:20:39,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:20:39,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:20:39,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:20:40,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:20:40,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:20:40,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:20:40,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:20:40,212 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:20:40,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-25 13:20:40,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e00d06b50/37240a09274245e7a1b3eade07cc5d94/FLAGf948b07c6 [2020-09-25 13:20:40,860 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:20:40,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-25 13:20:40,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e00d06b50/37240a09274245e7a1b3eade07cc5d94/FLAGf948b07c6 [2020-09-25 13:20:41,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e00d06b50/37240a09274245e7a1b3eade07cc5d94 [2020-09-25 13:20:41,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:20:41,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:20:41,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:41,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:20:41,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:20:41,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:41" (1/1) ... [2020-09-25 13:20:41,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a807493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41, skipping insertion in model container [2020-09-25 13:20:41,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:41" (1/1) ... [2020-09-25 13:20:41,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:20:41,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:20:41,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:41,613 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:20:41,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:41,676 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:20:41,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41 WrapperNode [2020-09-25 13:20:41,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:41,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:20:41,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:20:41,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:20:41,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41" (1/1) ... [2020-09-25 13:20:41,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41" (1/1) ... [2020-09-25 13:20:41,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41" (1/1) ... [2020-09-25 13:20:41,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41" (1/1) ... [2020-09-25 13:20:41,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41" (1/1) ... [2020-09-25 13:20:41,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41" (1/1) ... [2020-09-25 13:20:41,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41" (1/1) ... [2020-09-25 13:20:41,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:20:41,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:20:41,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:20:41,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:20:41,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:20:42,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:20:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:20:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 13:20:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 13:20:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-25 13:20:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:20:42,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:20:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 13:20:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 13:20:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 13:20:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:20:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 13:20:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:20:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:20:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-25 13:20:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:20:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:20:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:20:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:20:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 13:20:42,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:20:42,399 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 13:20:42,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:42 BoogieIcfgContainer [2020-09-25 13:20:42,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:20:42,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:20:42,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:20:42,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:20:42,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:20:41" (1/3) ... [2020-09-25 13:20:42,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113b01e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:42, skipping insertion in model container [2020-09-25 13:20:42,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:41" (2/3) ... [2020-09-25 13:20:42,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113b01e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:42, skipping insertion in model container [2020-09-25 13:20:42,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:42" (3/3) ... [2020-09-25 13:20:42,420 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-09-25 13:20:42,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:20:42,440 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:20:42,462 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:20:42,491 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:20:42,491 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:20:42,491 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:20:42,491 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:20:42,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:20:42,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:20:42,492 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:20:42,492 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:20:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-09-25 13:20:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:20:42,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:42,529 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] [2020-09-25 13:20:42,529 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:42,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:42,537 INFO L82 PathProgramCache]: Analyzing trace with hash -262911209, now seen corresponding path program 1 times [2020-09-25 13:20:42,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:42,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854165664] [2020-09-25 13:20:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:42,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:43,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:43,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:20:43,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:20:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 13:20:43,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:43,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:43,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:20:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 13:20:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:20:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:20:43,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:20:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:43,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:43,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:43,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:20:43,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:20:43,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:43,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:20:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:20:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:20:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:43,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:43,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:43,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:43,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:20:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:20:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:20:43,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:43,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:20:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:20:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:20:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:43,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:20:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:43,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:43,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:43,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:43,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:20:43,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:20:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:20:43,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:43,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:20:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:20:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:20:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:43,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:20:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:43,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:43,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:20:43,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:20:43,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:43,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:20:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:20:43,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854165664] [2020-09-25 13:20:43,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:20:43,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:20:43,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312025251] [2020-09-25 13:20:43,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:20:43,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:20:43,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:20:43,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:20:43,426 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2020-09-25 13:20:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:20:43,766 INFO L93 Difference]: Finished difference Result 149 states and 172 transitions. [2020-09-25 13:20:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:20:43,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 13:20:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:20:43,784 INFO L225 Difference]: With dead ends: 149 [2020-09-25 13:20:43,785 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 13:20:43,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:20:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 13:20:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-09-25 13:20:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 13:20:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 13:20:43,853 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 38 [2020-09-25 13:20:43,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:20:43,854 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 13:20:43,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:20:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 13:20:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:20:43,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:43,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:20:43,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:20:43,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:43,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:43,860 INFO L82 PathProgramCache]: Analyzing trace with hash 116411547, now seen corresponding path program 1 times [2020-09-25 13:20:43,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:43,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954137937] [2020-09-25 13:20:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:43,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:44,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:20:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 13:20:44,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:44,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:20:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:20:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:20:44,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:20:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:44,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:44,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:20:44,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:20:44,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:44,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:20:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:44,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:20:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:44,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:44,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:44,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 13:20:44,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:44,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 13:20:44,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:44,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:20:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 13:20:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:20:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:44,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 13:20:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:44,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:44,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:20:44,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:44,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 13:20:44,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:44,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:20:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:20:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:20:44,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:44,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:20:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:44,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:20:44,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:20:44,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:44,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:20:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:44,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:20:44,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954137937] [2020-09-25 13:20:44,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:20:44,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:20:44,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741667889] [2020-09-25 13:20:44,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:20:44,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:20:44,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:20:44,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:20:44,417 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-09-25 13:20:44,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:20:44,631 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-09-25 13:20:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:20:44,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-25 13:20:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:20:44,635 INFO L225 Difference]: With dead ends: 97 [2020-09-25 13:20:44,635 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 13:20:44,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:20:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 13:20:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 13:20:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 13:20:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 13:20:44,651 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 55 [2020-09-25 13:20:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:20:44,651 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 13:20:44,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:20:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 13:20:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:20:44,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:44,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:20:44,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:20:44,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:44,655 INFO L82 PathProgramCache]: Analyzing trace with hash -278535077, now seen corresponding path program 1 times [2020-09-25 13:20:44,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:44,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879800376] [2020-09-25 13:20:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:20:44,683 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:20:44,683 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:20:44,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:20:44,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:20:44 BoogieIcfgContainer [2020-09-25 13:20:44,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:20:44,722 INFO L168 Benchmark]: Toolchain (without parser) took 3506.49 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 100.2 MB in the beginning and 101.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 95.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:44,724 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:20:44,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.26 ms. Allocated memory is still 138.4 MB. Free memory was 99.5 MB in the beginning and 88.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:44,726 INFO L168 Benchmark]: Boogie Preprocessor took 238.91 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 88.6 MB in the beginning and 181.4 MB in the end (delta: -92.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:44,727 INFO L168 Benchmark]: RCFGBuilder took 492.64 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 160.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:44,728 INFO L168 Benchmark]: TraceAbstraction took 2306.99 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 159.4 MB in the beginning and 101.3 MB in the end (delta: 58.1 MB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:44,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 458.26 ms. Allocated memory is still 138.4 MB. Free memory was 99.5 MB in the beginning and 88.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 238.91 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 88.6 MB in the beginning and 181.4 MB in the end (delta: -92.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.64 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 160.1 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2306.99 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 159.4 MB in the beginning and 101.3 MB in the end (delta: 58.1 MB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L69] RET, EXPR fmax_double(x, y) [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) [L16] return x != x; [L71] RET, EXPR isnan_double(res) [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 162 SDtfs, 44 SDslu, 375 SDs, 0 SdLazy, 239 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 8016 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...