/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:33:30,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:33:30,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:33:30,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:33:30,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:33:30,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:33:30,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:33:30,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:33:30,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:33:30,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:33:30,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:33:30,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:33:30,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:33:30,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:33:30,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:33:30,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:33:30,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:33:30,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:33:30,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:33:30,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:33:30,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:33:30,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:33:30,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:33:30,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:33:30,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:33:30,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:33:30,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:33:30,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:33:30,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:33:30,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:33:30,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:33:30,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:33:30,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:33:30,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:33:30,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:33:30,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:33:30,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:33:30,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:33:30,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:33:30,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:33:30,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:33:30,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:33:30,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:33:30,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:33:30,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:33:30,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:33:30,224 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:33:30,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:33:30,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:33:30,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:33:30,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:33:30,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:33:30,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:33:30,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:33:30,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:33:30,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:33:30,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:33:30,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:33:30,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:33:30,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:33:30,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:33:30,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:33:30,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:33:30,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:33:30,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:33:30,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:33:30,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:33:30,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:33:30,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:33:30,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:33:30,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:33:30,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:33:30,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:33:30,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:33:30,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:33:30,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:33:30,747 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:33:30,749 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-25 06:33:30,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44c9408f/4f34fd953ba7418cbc5873f49f00a38a/FLAG64f9224d3 [2020-09-25 06:33:31,372 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:33:31,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-25 06:33:31,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44c9408f/4f34fd953ba7418cbc5873f49f00a38a/FLAG64f9224d3 [2020-09-25 06:33:31,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44c9408f/4f34fd953ba7418cbc5873f49f00a38a [2020-09-25 06:33:31,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:33:31,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:33:31,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:33:31,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:33:31,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:33:31,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:33:31" (1/1) ... [2020-09-25 06:33:31,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:31, skipping insertion in model container [2020-09-25 06:33:31,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:33:31" (1/1) ... [2020-09-25 06:33:31,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:33:31,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:33:31,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:33:31,997 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:33:32,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:33:32,059 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:33:32,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32 WrapperNode [2020-09-25 06:33:32,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:33:32,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:33:32,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:33:32,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:33:32,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32" (1/1) ... [2020-09-25 06:33:32,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32" (1/1) ... [2020-09-25 06:33:32,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32" (1/1) ... [2020-09-25 06:33:32,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32" (1/1) ... [2020-09-25 06:33:32,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32" (1/1) ... [2020-09-25 06:33:32,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32" (1/1) ... [2020-09-25 06:33:32,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32" (1/1) ... [2020-09-25 06:33:32,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:33:32,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:33:32,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:33:32,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:33:32,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:33:32,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:33:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:33:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 06:33:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 06:33:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-25 06:33:32,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:33:32,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:33:32,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 06:33:32,275 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 06:33:32,275 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 06:33:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:33:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 06:33:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:33:32,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:33:32,277 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-25 06:33:32,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:33:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:33:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:33:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:33:32,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 06:33:32,728 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:33:32,729 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 06:33:32,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:33:32 BoogieIcfgContainer [2020-09-25 06:33:32,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:33:32,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:33:32,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:33:32,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:33:32,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:33:31" (1/3) ... [2020-09-25 06:33:32,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652db6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:33:32, skipping insertion in model container [2020-09-25 06:33:32,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:32" (2/3) ... [2020-09-25 06:33:32,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652db6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:33:32, skipping insertion in model container [2020-09-25 06:33:32,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:33:32" (3/3) ... [2020-09-25 06:33:32,744 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-09-25 06:33:32,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:33:32,765 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:33:32,786 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:33:32,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:33:32,817 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:33:32,817 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:33:32,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:33:32,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:33:32,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:33:32,818 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:33:32,818 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:33:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-09-25 06:33:32,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 06:33:32,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:32,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:32,857 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:32,865 INFO L82 PathProgramCache]: Analyzing trace with hash -262911209, now seen corresponding path program 1 times [2020-09-25 06:33:32,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:32,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114520378] [2020-09-25 06:33:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:33,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:33,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:33,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:33,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 06:33:33,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:33:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-09-25 06:33:33,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:33,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 06:33:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:33:33,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:33,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:33,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:33,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:33,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:33,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:33:33,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:33,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:33,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:33,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:33,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:33,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:33,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:33,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:33,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:33,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:33:33,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:33:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 06:33:33,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:33,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:33:33,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:33,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:33,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:33,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:33,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:33:33,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:33,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:33:33,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:33,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 06:33:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:33,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 06:33:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:33,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:33,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:33,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:33,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:33:33,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:33,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:33,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:33,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114520378] [2020-09-25 06:33:33,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:33,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:33:33,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332277339] [2020-09-25 06:33:33,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:33:33,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:33,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:33:33,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:33:33,711 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 4 states. [2020-09-25 06:33:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:33,958 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2020-09-25 06:33:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:33:33,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-25 06:33:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:33,975 INFO L225 Difference]: With dead ends: 144 [2020-09-25 06:33:33,975 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 06:33:33,981 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 [2020-09-25 06:33:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 06:33:34,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-25 06:33:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 06:33:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-09-25 06:33:34,065 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 38 [2020-09-25 06:33:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:34,065 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-09-25 06:33:34,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:33:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-09-25 06:33:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 06:33:34,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:34,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:34,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:33:34,070 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1870357407, now seen corresponding path program 1 times [2020-09-25 06:33:34,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:34,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867779540] [2020-09-25 06:33:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:34,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:34,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 06:33:34,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 06:33:34,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:34,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 06:33:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:34,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:34,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:34,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:34,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:34,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:34,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:34,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:33:34,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:34,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:34,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:34,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:34,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:34,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 06:33:34,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 06:33:34,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:34,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 06:33:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:34,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:34,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:34,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:34,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 06:33:34,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:34,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 06:33:34,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:34,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:34,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:33:34,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 06:33:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:34,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:33:34,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:34,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:34,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867779540] [2020-09-25 06:33:34,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:34,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:33:34,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931290413] [2020-09-25 06:33:34,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:33:34,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:34,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:33:34,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:33:34,568 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 6 states. [2020-09-25 06:33:34,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:34,785 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-09-25 06:33:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:33:34,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 06:33:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:34,790 INFO L225 Difference]: With dead ends: 93 [2020-09-25 06:33:34,791 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 06:33:34,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:33:34,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 06:33:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-09-25 06:33:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 06:33:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 06:33:34,809 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 52 [2020-09-25 06:33:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:34,809 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 06:33:34,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:33:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 06:33:34,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 06:33:34,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:34,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:34,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:33:34,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:34,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1287799104, now seen corresponding path program 1 times [2020-09-25 06:33:34,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:34,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698323213] [2020-09-25 06:33:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:34,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:34,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:34,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 06:33:34,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:34,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 06:33:34,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:34,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:33:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:35,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:35,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:35,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:35,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:35,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:33:35,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:35,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:35,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:35,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:35,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:35,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 06:33:35,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 06:33:35,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:35,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 06:33:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:35,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:35,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:35,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:33:35,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 06:33:35,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:35,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:35,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:33:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:33:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:35,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:35,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:35,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:35,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:33:35,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:35,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:35,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698323213] [2020-09-25 06:33:35,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:35,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:33:35,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132302107] [2020-09-25 06:33:35,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:33:35,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:35,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:33:35,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:33:35,334 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-09-25 06:33:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:35,558 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-09-25 06:33:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:33:35,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-25 06:33:35,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:35,563 INFO L225 Difference]: With dead ends: 97 [2020-09-25 06:33:35,564 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 06:33:35,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:33:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 06:33:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 06:33:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 06:33:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 06:33:35,583 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 53 [2020-09-25 06:33:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:35,583 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 06:33:35,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:33:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 06:33:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 06:33:35,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:35,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:35,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:33:35,593 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:35,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1637717988, now seen corresponding path program 1 times [2020-09-25 06:33:35,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:35,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323362406] [2020-09-25 06:33:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:35,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:35,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:33:35,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:35,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 06:33:35,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:35,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:33:35,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:35,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:35,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:35,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:35,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:35,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:35,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:33:35,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:35,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:35,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:33:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:35,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:35,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:33:35,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 06:33:35,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:35,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 06:33:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:36,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:36,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:33:36,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 06:33:36,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:36,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:36,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:36,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:36,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:33:36,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:36,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:33:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:36,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:36,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:36,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:33:36,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:36,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:36,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:36,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323362406] [2020-09-25 06:33:36,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:36,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:33:36,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355535325] [2020-09-25 06:33:36,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:33:36,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:36,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:33:36,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:33:36,108 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-09-25 06:33:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:36,326 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-09-25 06:33:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:33:36,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-25 06:33:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:36,328 INFO L225 Difference]: With dead ends: 97 [2020-09-25 06:33:36,329 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 06:33:36,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:33:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 06:33:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 06:33:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 06:33:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 06:33:36,339 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 54 [2020-09-25 06:33:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:36,339 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 06:33:36,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:33:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 06:33:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 06:33:36,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:36,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:36,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:33:36,342 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:36,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:36,343 INFO L82 PathProgramCache]: Analyzing trace with hash 116411547, now seen corresponding path program 1 times [2020-09-25 06:33:36,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:36,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997244575] [2020-09-25 06:33:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:36,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:36,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:33:36,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 06:33:36,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:36,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 06:33:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:36,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:36,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:36,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:36,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:33:36,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:36,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:36,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:36,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:36,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 06:33:36,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 06:33:36,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:36,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 06:33:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:36,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:36,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:36,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:33:36,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 06:33:36,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:36,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:33:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:33:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:36,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:36,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:36,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:36,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:33:36,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:36,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:36,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997244575] [2020-09-25 06:33:36,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:36,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:33:36,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757830008] [2020-09-25 06:33:36,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:33:36,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:36,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:33:36,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:33:36,800 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-09-25 06:33:36,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:36,994 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-09-25 06:33:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:33:36,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-25 06:33:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:36,996 INFO L225 Difference]: With dead ends: 97 [2020-09-25 06:33:36,996 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 06:33:36,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:33:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 06:33:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 06:33:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 06:33:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 06:33:37,005 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 55 [2020-09-25 06:33:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:37,006 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 06:33:37,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:33:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 06:33:37,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 06:33:37,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:37,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:37,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:33:37,007 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:37,008 INFO L82 PathProgramCache]: Analyzing trace with hash -278535077, now seen corresponding path program 1 times [2020-09-25 06:33:37,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:37,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549926230] [2020-09-25 06:33:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:33:37,028 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:33:37,028 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:33:37,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:33:37,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:33:37 BoogieIcfgContainer [2020-09-25 06:33:37,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:33:37,062 INFO L168 Benchmark]: Toolchain (without parser) took 5331.95 ms. Allocated memory was 138.4 MB in the beginning and 249.6 MB in the end (delta: 111.1 MB). Free memory was 102.0 MB in the beginning and 130.2 MB in the end (delta: -28.2 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:37,063 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:33:37,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.47 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 90.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:37,065 INFO L168 Benchmark]: Boogie Preprocessor took 137.10 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.4 MB in the beginning and 177.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:37,066 INFO L168 Benchmark]: RCFGBuilder took 537.08 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 155.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:37,067 INFO L168 Benchmark]: TraceAbstraction took 4322.13 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 155.7 MB in the beginning and 130.2 MB in the end (delta: 25.5 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:37,071 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.47 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 90.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.10 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.4 MB in the beginning and 177.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 537.08 ms. Allocated memory is still 200.8 MB. Free memory was 177.9 MB in the beginning and 155.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4322.13 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 155.7 MB in the beginning and 130.2 MB in the end (delta: 25.5 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L69] RET, EXPR fmax_double(x, y) [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) [L16] return x != x; [L71] RET, EXPR isnan_double(res) [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 401 SDtfs, 109 SDslu, 784 SDs, 0 SdLazy, 559 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 307 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 247 ConstructedInterpolants, 0 QuantifiedInterpolants, 22638 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...