/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 --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 interpolation-heuristic=FIRST --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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:48,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:48,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:48,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:48,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:48,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:48,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:48,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:48,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:48,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:48,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:48,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:48,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:48,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:48,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:48,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:48,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:48,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:48,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:48,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:48,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:48,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:48,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:48,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:48,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:48,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:48,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:48,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:48,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:48,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:48,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:48,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:48,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:48,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:48,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:48,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:48,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:48,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:48,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:48,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:48,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:48,202 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 [2020-09-21 11:18:48,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:48,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:48,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:48,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:48,251 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:48,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:48,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:48,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:48,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:48,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:48,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:48,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:48,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:48,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:48,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:48,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:48,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:48,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:48,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:48,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:48,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:48,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:48,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:48,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:48,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:48,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:48,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:48,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:48,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:48,258 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:48,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:48,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:48,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:48,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:48,790 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:48,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-09-21 11:18:48,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1da98078/9bcc9459531f4be38ac112c31f478cb0/FLAG48a815301 [2020-09-21 11:18:49,450 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:49,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-09-21 11:18:49,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1da98078/9bcc9459531f4be38ac112c31f478cb0/FLAG48a815301 [2020-09-21 11:18:49,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1da98078/9bcc9459531f4be38ac112c31f478cb0 [2020-09-21 11:18:49,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:49,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:49,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:49,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:49,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:49,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc82329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:49, skipping insertion in model container [2020-09-21 11:18:49,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:49" (1/1) ... [2020-09-21 11:18:49,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:49,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:50,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:50,110 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:50,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:50,166 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:50,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50 WrapperNode [2020-09-21 11:18:50,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:50,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:50,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:50,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:50,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50" (1/1) ... [2020-09-21 11:18:50,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50" (1/1) ... [2020-09-21 11:18:50,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50" (1/1) ... [2020-09-21 11:18:50,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50" (1/1) ... [2020-09-21 11:18:50,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50" (1/1) ... [2020-09-21 11:18:50,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50" (1/1) ... [2020-09-21 11:18:50,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50" (1/1) ... [2020-09-21 11:18:50,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:50,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:50,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:50,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:50,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50" (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 [2020-09-21 11:18:50,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:50,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:50,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 11:18:50,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-21 11:18:50,380 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-21 11:18:50,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 11:18:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 11:18:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-21 11:18:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:50,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-21 11:18:50,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:50,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:50,768 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:50,769 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 11:18:50,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:50 BoogieIcfgContainer [2020-09-21 11:18:50,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:50,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:50,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:50,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:50,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:49" (1/3) ... [2020-09-21 11:18:50,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f30a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:50, skipping insertion in model container [2020-09-21 11:18:50,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:50" (2/3) ... [2020-09-21 11:18:50,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f30a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:50, skipping insertion in model container [2020-09-21 11:18:50,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:50" (3/3) ... [2020-09-21 11:18:50,784 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-09-21 11:18:50,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:50,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:50,825 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:50,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:50,853 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:50,853 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:50,853 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:50,853 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:50,853 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:50,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:50,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-21 11:18:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:18:50,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:50,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:18:50,885 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:50,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1800374877, now seen corresponding path program 1 times [2020-09-21 11:18:50,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:50,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796431909] [2020-09-21 11:18:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,057 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,057 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,057 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,058 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:18:51,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:51,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 11:18:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,150 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,150 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,151 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,151 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:51,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,166 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,166 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,166 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:18:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,204 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,205 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:18:51,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:51,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:18:51,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,227 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,228 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,228 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,228 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:18:51,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:51,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:51,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:51,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796431909] [2020-09-21 11:18:51,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:51,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:51,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761820022] [2020-09-21 11:18:51,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:51,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:51,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:51,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:51,280 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-09-21 11:18:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:51,497 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2020-09-21 11:18:51,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:18:51,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-21 11:18:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:51,512 INFO L225 Difference]: With dead ends: 72 [2020-09-21 11:18:51,513 INFO L226 Difference]: Without dead ends: 37 [2020-09-21 11:18:51,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:18:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-21 11:18:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-21 11:18:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 11:18:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-09-21 11:18:51,576 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2020-09-21 11:18:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:51,577 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-09-21 11:18:51,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-09-21 11:18:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:18:51,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:51,580 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] [2020-09-21 11:18:51,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:51,581 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:51,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:51,582 INFO L82 PathProgramCache]: Analyzing trace with hash 283227385, now seen corresponding path program 1 times [2020-09-21 11:18:51,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:51,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589145843] [2020-09-21 11:18:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,659 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,659 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,659 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,660 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:18:51,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 11:18:51,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-21 11:18:51,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:18:51,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,761 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,762 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,762 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,762 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:51,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,772 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,772 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,772 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:51,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:51,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:51,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:18:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,832 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,832 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,833 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,833 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:18:51,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:18:51,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:18:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:51,935 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:51,935 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:51,935 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:51,936 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:51,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:18:51,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:51,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:18:51,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:51,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589145843] [2020-09-21 11:18:51,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:51,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:51,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404635127] [2020-09-21 11:18:51,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:51,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:51,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:51,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:51,973 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 6 states. [2020-09-21 11:18:52,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:52,203 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-09-21 11:18:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:52,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-21 11:18:52,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:52,207 INFO L225 Difference]: With dead ends: 47 [2020-09-21 11:18:52,208 INFO L226 Difference]: Without dead ends: 41 [2020-09-21 11:18:52,209 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 [2020-09-21 11:18:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-21 11:18:52,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-21 11:18:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 11:18:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-09-21 11:18:52,223 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-09-21 11:18:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:52,223 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-09-21 11:18:52,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-09-21 11:18:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:18:52,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:52,225 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] [2020-09-21 11:18:52,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:52,226 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:52,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:52,226 INFO L82 PathProgramCache]: Analyzing trace with hash -922795904, now seen corresponding path program 1 times [2020-09-21 11:18:52,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:52,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90633583] [2020-09-21 11:18:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,271 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,271 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,271 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,272 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 11:18:52,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:18:52,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-21 11:18:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:18:52,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,336 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,336 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,336 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,336 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:52,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:52,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,355 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,355 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,355 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,356 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:52,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:52,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:18:52,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:18:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,418 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,418 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,418 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,418 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:18:52,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:18:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:18:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,489 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,489 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,490 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,490 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:18:52,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:18:52,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:18:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:52,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90633583] [2020-09-21 11:18:52,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:52,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:52,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956427509] [2020-09-21 11:18:52,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:52,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:52,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:52,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:52,514 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-09-21 11:18:52,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:52,729 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-09-21 11:18:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:52,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-21 11:18:52,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:52,732 INFO L225 Difference]: With dead ends: 51 [2020-09-21 11:18:52,732 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 11:18:52,733 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 [2020-09-21 11:18:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 11:18:52,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-21 11:18:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 11:18:52,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-09-21 11:18:52,742 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 29 [2020-09-21 11:18:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:52,743 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-09-21 11:18:52,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-09-21 11:18:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 11:18:52,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:52,744 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] [2020-09-21 11:18:52,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:18:52,745 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:52,745 INFO L82 PathProgramCache]: Analyzing trace with hash -440866219, now seen corresponding path program 1 times [2020-09-21 11:18:52,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:52,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041233781] [2020-09-21 11:18:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,771 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,771 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,771 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,771 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:18:52,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:18:52,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-21 11:18:52,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,809 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,809 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,810 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:52,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:52,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,817 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,817 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,817 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:52,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:52,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:52,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:52,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:18:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,849 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,850 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,850 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,850 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:18:52,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:18:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:18:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:52,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:52,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:52,892 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:52,892 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:52,893 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:52,894 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:52,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:18:52,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:52,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:52,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:52,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:52,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:18:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:18:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:52,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041233781] [2020-09-21 11:18:52,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:52,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:52,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887345303] [2020-09-21 11:18:52,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:52,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:52,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:52,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:52,943 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-09-21 11:18:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:53,182 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-09-21 11:18:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:53,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-21 11:18:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:53,184 INFO L225 Difference]: With dead ends: 51 [2020-09-21 11:18:53,184 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 11:18:53,185 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 [2020-09-21 11:18:53,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 11:18:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-21 11:18:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 11:18:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-09-21 11:18:53,194 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 30 [2020-09-21 11:18:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:53,194 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-09-21 11:18:53,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-09-21 11:18:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:18:53,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:53,196 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] [2020-09-21 11:18:53,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:18:53,196 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:53,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:53,197 INFO L82 PathProgramCache]: Analyzing trace with hash 827998108, now seen corresponding path program 1 times [2020-09-21 11:18:53,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:53,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848876577] [2020-09-21 11:18:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:53,220 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:53,221 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:53,221 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:53,221 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:53,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 11:18:53,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:18:53,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 11:18:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:53,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:53,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:53,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:53,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:53,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:53,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:53,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:53,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:53,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:53,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:53,257 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:53,257 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:53,257 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:53,257 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:53,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:53,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:53,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:53,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:18:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:53,291 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:53,291 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:53,291 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:53,292 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:18:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:18:53,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:18:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:18:53,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:53,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:18:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:53,328 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:53,328 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:53,328 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:53,328 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:53,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:18:53,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:18:53,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:18:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:18:53,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:53,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848876577] [2020-09-21 11:18:53,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:53,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:18:53,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365513521] [2020-09-21 11:18:53,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:18:53,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:53,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:18:53,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:18:53,349 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-09-21 11:18:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:53,540 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-09-21 11:18:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:18:53,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-21 11:18:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:53,542 INFO L225 Difference]: With dead ends: 51 [2020-09-21 11:18:53,542 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 11:18:53,543 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 [2020-09-21 11:18:53,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 11:18:53,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-21 11:18:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 11:18:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-09-21 11:18:53,551 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-09-21 11:18:53,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:53,551 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-09-21 11:18:53,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:18:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-09-21 11:18:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:18:53,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:53,553 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] [2020-09-21 11:18:53,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:18:53,553 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:53,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:53,554 INFO L82 PathProgramCache]: Analyzing trace with hash 631484603, now seen corresponding path program 1 times [2020-09-21 11:18:53,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:53,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130737323] [2020-09-21 11:18:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:53,577 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:53,577 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:53,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:18:53,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:53 BoogieIcfgContainer [2020-09-21 11:18:53,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:53,603 INFO L168 Benchmark]: Toolchain (without parser) took 3794.82 ms. Allocated memory was 141.0 MB in the beginning and 243.3 MB in the end (delta: 102.2 MB). Free memory was 104.2 MB in the beginning and 136.2 MB in the end (delta: -32.1 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,604 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.54 ms. Allocated memory is still 141.0 MB. Free memory was 103.3 MB in the beginning and 92.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,606 INFO L168 Benchmark]: Boogie Preprocessor took 133.44 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,607 INFO L168 Benchmark]: RCFGBuilder took 472.65 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,608 INFO L168 Benchmark]: TraceAbstraction took 2824.85 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 161.1 MB in the beginning and 136.2 MB in the end (delta: 24.8 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:53,612 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.54 ms. Allocated memory is still 141.0 MB. Free memory was 103.3 MB in the beginning and 92.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.44 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 472.65 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2824.85 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 161.1 MB in the beginning and 136.2 MB in the end (delta: 24.8 MB). Peak memory consumption was 64.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L72] CALL, EXPR isnan_double(x) [L16] return x != x; [L72] RET, EXPR isnan_double(x) [L72] COND TRUE !isnan_double(x) [L74] 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; [L74] RET, EXPR fmax_double(x, y) [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 196 SDslu, 81 SDs, 0 SdLazy, 519 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 9462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...