/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=BIGGEST --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_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:31:54,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:31:54,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:31:54,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:31:54,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:31:54,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:31:54,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:31:54,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:31:54,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:31:54,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:31:54,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:31:54,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:31:54,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:31:54,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:31:54,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:31:54,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:31:54,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:31:54,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:31:54,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:31:54,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:31:54,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:31:54,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:31:54,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:31:54,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:31:54,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:31:54,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:31:54,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:31:54,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:31:54,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:31:54,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:31:54,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:31:54,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:31:54,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:31:54,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:31:54,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:31:54,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:31:54,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:31:54,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:31:54,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:31:54,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:31:54,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:31:54,159 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 [2020-10-12 15:31:54,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:31:54,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:31:54,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:31:54,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:31:54,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:31:54,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:31:54,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:31:54,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:31:54,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:31:54,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:31:54,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:31:54,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:31:54,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:31:54,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:31:54,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:31:54,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:31:54,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:31:54,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:31:54,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:31:54,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:31:54,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:31:54,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:31:54,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:31:54,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:31:54,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:31:54,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:31:54,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:31:54,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:31:54,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:31:54,216 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:31:54,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:31:54,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:31:54,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:31:54,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:31:54,553 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:31:54,554 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-10-12 15:31:54,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e313336ad/43fb246738944cff86a92bf805c98703/FLAG567e56ca6 [2020-10-12 15:31:54,994 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:31:54,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-10-12 15:31:55,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e313336ad/43fb246738944cff86a92bf805c98703/FLAG567e56ca6 [2020-10-12 15:31:55,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e313336ad/43fb246738944cff86a92bf805c98703 [2020-10-12 15:31:55,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:31:55,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:31:55,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:55,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:31:55,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:31:55,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:55" (1/1) ... [2020-10-12 15:31:55,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7beb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55, skipping insertion in model container [2020-10-12 15:31:55,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:55" (1/1) ... [2020-10-12 15:31:55,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:31:55,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:31:55,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:55,707 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:31:55,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:55,785 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:31:55,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55 WrapperNode [2020-10-12 15:31:55,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:55,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:31:55,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:31:55,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:31:55,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55" (1/1) ... [2020-10-12 15:31:55,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55" (1/1) ... [2020-10-12 15:31:55,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55" (1/1) ... [2020-10-12 15:31:55,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55" (1/1) ... [2020-10-12 15:31:55,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55" (1/1) ... [2020-10-12 15:31:55,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55" (1/1) ... [2020-10-12 15:31:55,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55" (1/1) ... [2020-10-12 15:31:55,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:31:55,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:31:55,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:31:55,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:31:55,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55" (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 [2020-10-12 15:31:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:31:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:31:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-12 15:31:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-12 15:31:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-12 15:31:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:31:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:31:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-12 15:31:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-12 15:31:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-12 15:31:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:31:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:31:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:31:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:31:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-12 15:31:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:31:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:31:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:31:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:31:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:31:56,351 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:31:56,351 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 15:31:56,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:56 BoogieIcfgContainer [2020-10-12 15:31:56,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:31:56,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:31:56,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:31:56,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:31:56,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:31:55" (1/3) ... [2020-10-12 15:31:56,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7645b8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:56, skipping insertion in model container [2020-10-12 15:31:56,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:55" (2/3) ... [2020-10-12 15:31:56,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7645b8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:56, skipping insertion in model container [2020-10-12 15:31:56,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:56" (3/3) ... [2020-10-12 15:31:56,364 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-10-12 15:31:56,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:31:56,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:31:56,402 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:31:56,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:31:56,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:31:56,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:31:56,458 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:31:56,458 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:31:56,458 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:31:56,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:31:56,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:31:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-12 15:31:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:31:56,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:56,521 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] [2020-10-12 15:31:56,521 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:56,527 INFO L82 PathProgramCache]: Analyzing trace with hash 397720622, now seen corresponding path program 1 times [2020-10-12 15:31:56,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:56,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141056572] [2020-10-12 15:31:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:56,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:56,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:56,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:31:56,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:31:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-12 15:31:56,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:56,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:56,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:31:56,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:31:56,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 15:31:57,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:57,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:57,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:57,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:57,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:31:57,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:57,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:31:57,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:57,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:31:57,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:31:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 15:31:57,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 15:31:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:31:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:31:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:31:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:57,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:57,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:57,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:57,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:31:57,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:31:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:31:57,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:31:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:31:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:57,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:57,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:57,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:31:57,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:31:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:57,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141056572] [2020-10-12 15:31:57,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:57,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:31:57,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199198006] [2020-10-12 15:31:57,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:31:57,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:57,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:31:57,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:31:57,354 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-10-12 15:31:57,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:57,668 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2020-10-12 15:31:57,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:31:57,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-12 15:31:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:57,682 INFO L225 Difference]: With dead ends: 75 [2020-10-12 15:31:57,683 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 15:31:57,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:31:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 15:31:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-12 15:31:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 15:31:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-12 15:31:57,739 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 26 [2020-10-12 15:31:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:57,740 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-12 15:31:57,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:31:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-12 15:31:57,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:31:57,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:57,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:31:57,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:31:57,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:57,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:57,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1630368017, now seen corresponding path program 1 times [2020-10-12 15:31:57,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:57,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009066965] [2020-10-12 15:31:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:57,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:57,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:31:57,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:57,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 15:31:57,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:31:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:31:57,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:57,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:57,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:57,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:57,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:57,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:31:57,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:57,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:57,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:31:57,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 15:31:57,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 15:31:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:31:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:31:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:31:58,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:31:58,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:31:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 15:31:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:58,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:31:58,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:31:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:58,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009066965] [2020-10-12 15:31:58,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:58,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:31:58,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126341580] [2020-10-12 15:31:58,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:31:58,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:58,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:31:58,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:31:58,035 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-10-12 15:31:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:58,227 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-10-12 15:31:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:31:58,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-12 15:31:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:58,229 INFO L225 Difference]: With dead ends: 55 [2020-10-12 15:31:58,230 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 15:31:58,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:31:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 15:31:58,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-12 15:31:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 15:31:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-12 15:31:58,241 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 28 [2020-10-12 15:31:58,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:58,241 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-12 15:31:58,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:31:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-12 15:31:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:31:58,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:58,243 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] [2020-10-12 15:31:58,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:31:58,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:58,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:58,244 INFO L82 PathProgramCache]: Analyzing trace with hash -228020471, now seen corresponding path program 1 times [2020-10-12 15:31:58,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:58,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492074653] [2020-10-12 15:31:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:31:58,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 15:31:58,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:58,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 15:31:58,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:31:58,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:31:58,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:58,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:31:58,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:58,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:31:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:31:58,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 15:31:58,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:31:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:31:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:31:58,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:31:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:31:58,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 15:31:58,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:31:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:31:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:58,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:31:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:31:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:58,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492074653] [2020-10-12 15:31:58,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:58,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:31:58,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452546750] [2020-10-12 15:31:58,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:31:58,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:58,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:31:58,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:31:58,517 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-10-12 15:31:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:58,732 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-12 15:31:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:31:58,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-12 15:31:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:58,734 INFO L225 Difference]: With dead ends: 59 [2020-10-12 15:31:58,735 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 15:31:58,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:31:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 15:31:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2020-10-12 15:31:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 15:31:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-12 15:31:58,745 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 29 [2020-10-12 15:31:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:58,745 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-12 15:31:58,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:31:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-12 15:31:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:31:58,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:58,747 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] [2020-10-12 15:31:58,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:31:58,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:58,748 INFO L82 PathProgramCache]: Analyzing trace with hash -268248811, now seen corresponding path program 1 times [2020-10-12 15:31:58,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:58,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158475135] [2020-10-12 15:31:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:31:58,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 15:31:58,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:31:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:31:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:58,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:58,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:31:58,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:58,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:58,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:31:58,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:31:58,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 15:31:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:31:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:58,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:31:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:59,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:59,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 15:31:59,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 15:31:59,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:31:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:31:59,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 15:31:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:59,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:59,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:59,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:59,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:31:59,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:31:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:59,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:59,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158475135] [2020-10-12 15:31:59,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:59,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:31:59,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52646673] [2020-10-12 15:31:59,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:31:59,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:59,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:31:59,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:31:59,049 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-10-12 15:31:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:59,221 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-10-12 15:31:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:31:59,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-12 15:31:59,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:59,223 INFO L225 Difference]: With dead ends: 55 [2020-10-12 15:31:59,224 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 15:31:59,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:31:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 15:31:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-12 15:31:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 15:31:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-12 15:31:59,232 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-10-12 15:31:59,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:59,232 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-12 15:31:59,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:31:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-12 15:31:59,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:31:59,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:59,234 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] [2020-10-12 15:31:59,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:31:59,235 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:59,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:59,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1239302998, now seen corresponding path program 1 times [2020-10-12 15:31:59,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:59,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602496254] [2020-10-12 15:31:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:31:59,248 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:31:59,248 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:31:59,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:31:59,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:31:59 BoogieIcfgContainer [2020-10-12 15:31:59,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:31:59,273 INFO L168 Benchmark]: Toolchain (without parser) took 3887.71 ms. Allocated memory was 139.5 MB in the beginning and 246.9 MB in the end (delta: 107.5 MB). Free memory was 101.7 MB in the beginning and 101.6 MB in the end (delta: 154.4 kB). Peak memory consumption was 107.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:59,274 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-12 15:31:59,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.24 ms. Allocated memory is still 139.5 MB. Free memory was 101.5 MB in the beginning and 90.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:59,276 INFO L168 Benchmark]: Boogie Preprocessor took 160.81 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 90.3 MB in the beginning and 178.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:59,277 INFO L168 Benchmark]: RCFGBuilder took 407.81 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 159.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:59,278 INFO L168 Benchmark]: TraceAbstraction took 2914.22 ms. Allocated memory was 200.8 MB in the beginning and 246.9 MB in the end (delta: 46.1 MB). Free memory was 158.7 MB in the beginning and 101.6 MB in the end (delta: 57.1 MB). Peak memory consumption was 103.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:59,282 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 400.24 ms. Allocated memory is still 139.5 MB. Free memory was 101.5 MB in the beginning and 90.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 160.81 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 90.3 MB in the beginning and 178.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.81 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 159.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2914.22 ms. Allocated memory was 200.8 MB in the beginning and 246.9 MB in the end (delta: 46.1 MB). Free memory was 158.7 MB in the beginning and 101.6 MB in the end (delta: 57.1 MB). Peak memory consumption was 103.2 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 67. 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, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 153 SDtfs, 140 SDslu, 82 SDs, 0 SdLazy, 485 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 7448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...