/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=1.0 --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 08:51:33,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:51:33,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:51:33,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:51:33,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:51:33,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:51:33,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:51:33,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:51:33,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:51:33,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:51:33,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:51:33,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:51:34,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:51:34,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:51:34,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:51:34,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:51:34,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:51:34,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:51:34,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:51:34,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:51:34,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:51:34,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:51:34,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:51:34,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:51:34,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:51:34,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:51:34,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:51:34,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:51:34,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:51:34,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:51:34,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:51:34,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:51:34,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:51:34,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:51:34,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:51:34,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:51:34,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:51:34,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:51:34,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:51:34,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:51:34,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:51:34,047 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 08:51:34,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:51:34,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:51:34,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:51:34,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:51:34,080 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:51:34,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:51:34,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:51:34,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:51:34,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:51:34,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:51:34,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:51:34,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:51:34,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:51:34,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:51:34,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:51:34,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:51:34,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:51:34,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:51:34,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:51:34,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:51:34,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:51:34,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:51:34,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:51:34,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:51:34,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:51:34,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:51:34,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:51:34,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:51:34,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:51:34,085 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:51:34,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:51:34,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:51:34,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:51:34,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:51:34,601 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:51:34,602 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-25 08:51:34,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/708f313f9/8fcedac919d34d4d97dd252803615ae7/FLAG42027400e [2020-09-25 08:51:35,287 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:51:35,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-09-25 08:51:35,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/708f313f9/8fcedac919d34d4d97dd252803615ae7/FLAG42027400e [2020-09-25 08:51:35,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/708f313f9/8fcedac919d34d4d97dd252803615ae7 [2020-09-25 08:51:35,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:51:35,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:51:35,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:51:35,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:51:35,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:51:35,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:51:35" (1/1) ... [2020-09-25 08:51:35,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de25899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:35, skipping insertion in model container [2020-09-25 08:51:35,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:51:35" (1/1) ... [2020-09-25 08:51:35,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:51:35,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:51:35,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:51:36,004 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:51:36,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:51:36,070 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:51:36,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36 WrapperNode [2020-09-25 08:51:36,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:51:36,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:51:36,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:51:36,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:51:36,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36" (1/1) ... [2020-09-25 08:51:36,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36" (1/1) ... [2020-09-25 08:51:36,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36" (1/1) ... [2020-09-25 08:51:36,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36" (1/1) ... [2020-09-25 08:51:36,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36" (1/1) ... [2020-09-25 08:51:36,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36" (1/1) ... [2020-09-25 08:51:36,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36" (1/1) ... [2020-09-25 08:51:36,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:51:36,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:51:36,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:51:36,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:51:36,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36" (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 08:51:36,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:51:36,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:51:36,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 08:51:36,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 08:51:36,335 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-25 08:51:36,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:51:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:51:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 08:51:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 08:51:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 08:51:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:51:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 08:51:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:51:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:51:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-25 08:51:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:51:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:51:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:51:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 08:51:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:51:36,793 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:51:36,793 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 08:51:36,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:51:36 BoogieIcfgContainer [2020-09-25 08:51:36,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:51:36,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:51:36,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:51:36,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:51:36,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:51:35" (1/3) ... [2020-09-25 08:51:36,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e97a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:51:36, skipping insertion in model container [2020-09-25 08:51:36,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:51:36" (2/3) ... [2020-09-25 08:51:36,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e97a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:51:36, skipping insertion in model container [2020-09-25 08:51:36,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:51:36" (3/3) ... [2020-09-25 08:51:36,809 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-09-25 08:51:36,821 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:51:36,831 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:51:36,852 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:51:36,882 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:51:36,882 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:51:36,882 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:51:36,882 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:51:36,882 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:51:36,882 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:51:36,882 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:51:36,883 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:51:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-09-25 08:51:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 08:51:36,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:36,916 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 08:51:36,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:36,923 INFO L82 PathProgramCache]: Analyzing trace with hash -262911209, now seen corresponding path program 1 times [2020-09-25 08:51:36,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:36,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601025758] [2020-09-25 08:51:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:37,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:37,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:51:37,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:51:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-25 08:51:37,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:37,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 08:51:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 08:51:37,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:51:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:37,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:37,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:37,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:51:37,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:37,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:51:37,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:37,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:37,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:37,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:51:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:37,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:37,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:51:37,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:51:37,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 08:51:37,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:37,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:51:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:37,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:51:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:37,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:37,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 08:51:37,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 08:51:37,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:37,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:51:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:37,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:51:37,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 08:51:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:37,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:37,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:37,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:51:37,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:51:37,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:37,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:51:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:37,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:37,771 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 08:51:37,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601025758] [2020-09-25 08:51:37,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:51:37,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:51:37,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087895113] [2020-09-25 08:51:37,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:51:37,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:51:37,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:51:37,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:51:37,811 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 4 states. [2020-09-25 08:51:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:51:38,145 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2020-09-25 08:51:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:51:38,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-25 08:51:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:51:38,162 INFO L225 Difference]: With dead ends: 144 [2020-09-25 08:51:38,162 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 08:51:38,167 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 08:51:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 08:51:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-25 08:51:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 08:51:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-09-25 08:51:38,234 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 38 [2020-09-25 08:51:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:51:38,235 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-09-25 08:51:38,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:51:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-09-25 08:51:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 08:51:38,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:38,239 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 08:51:38,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:51:38,239 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1870357407, now seen corresponding path program 1 times [2020-09-25 08:51:38,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:38,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655668180] [2020-09-25 08:51:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:38,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:38,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 08:51:38,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:38,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 08:51:38,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:38,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 08:51:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:51:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:51:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:38,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:38,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:51:38,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:51:38,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:38,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:38,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:38,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:38,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:51:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:38,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:38,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 08:51:38,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:38,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 08:51:38,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:38,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 08:51:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:51:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:51:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:38,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:38,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 08:51:38,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 08:51:38,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:38,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:51:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 08:51:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:38,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:38,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:38,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:51:38,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:38,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:51:38,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:38,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:51:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:38,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:38,761 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 08:51:38,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655668180] [2020-09-25 08:51:38,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:51:38,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:51:38,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405146840] [2020-09-25 08:51:38,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:51:38,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:51:38,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:51:38,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:51:38,767 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 6 states. [2020-09-25 08:51:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:51:38,992 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-09-25 08:51:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:51:38,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 08:51:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:51:38,997 INFO L225 Difference]: With dead ends: 93 [2020-09-25 08:51:38,997 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 08:51:38,998 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 08:51:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 08:51:39,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-09-25 08:51:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 08:51:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 08:51:39,012 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 52 [2020-09-25 08:51:39,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:51:39,013 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 08:51:39,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:51:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 08:51:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 08:51:39,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:39,015 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 08:51:39,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:51:39,015 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:39,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1287799104, now seen corresponding path program 1 times [2020-09-25 08:51:39,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:39,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974949342] [2020-09-25 08:51:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:39,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:39,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:39,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 08:51:39,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:39,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 08:51:39,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:39,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 08:51:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:51:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:51:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:39,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:39,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:51:39,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:39,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:51:39,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:39,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:39,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:39,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:39,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:51:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:39,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:39,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:39,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 08:51:39,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:39,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 08:51:39,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:39,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 08:51:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:51:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:51:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:39,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:39,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 08:51:39,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 08:51:39,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:39,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 08:51:39,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:39,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:51:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:39,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:39,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:39,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:51:39,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:51:39,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:39,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:51:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:39,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:39,487 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 08:51:39,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974949342] [2020-09-25 08:51:39,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:51:39,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:51:39,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623001525] [2020-09-25 08:51:39,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:51:39,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:51:39,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:51:39,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:51:39,490 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-09-25 08:51:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:51:39,683 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-09-25 08:51:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:51:39,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-25 08:51:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:51:39,686 INFO L225 Difference]: With dead ends: 97 [2020-09-25 08:51:39,686 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 08:51:39,687 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 08:51:39,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 08:51:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 08:51:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 08:51:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 08:51:39,697 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 53 [2020-09-25 08:51:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:51:39,698 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 08:51:39,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:51:39,698 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 08:51:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 08:51:39,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:39,700 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 08:51:39,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:51:39,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:39,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:39,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1637717988, now seen corresponding path program 1 times [2020-09-25 08:51:39,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:39,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170145078] [2020-09-25 08:51:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:39,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:39,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 08:51:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 08:51:39,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:39,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 08:51:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:51:39,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:51:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:39,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:39,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:51:39,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:51:39,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:39,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:39,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:51:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:39,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:51:39,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 08:51:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:39,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 08:51:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:51:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:51:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:40,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:40,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 08:51:40,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 08:51:40,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:40,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 08:51:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:40,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 08:51:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:40,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:40,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:40,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:51:40,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:51:40,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:40,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:51:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:40,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:40,123 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 08:51:40,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170145078] [2020-09-25 08:51:40,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:51:40,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:51:40,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435935236] [2020-09-25 08:51:40,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:51:40,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:51:40,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:51:40,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:51:40,126 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-09-25 08:51:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:51:40,362 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-09-25 08:51:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:51:40,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-25 08:51:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:51:40,364 INFO L225 Difference]: With dead ends: 97 [2020-09-25 08:51:40,365 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 08:51:40,365 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 08:51:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 08:51:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 08:51:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 08:51:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 08:51:40,375 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 54 [2020-09-25 08:51:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:51:40,375 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 08:51:40,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:51:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 08:51:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 08:51:40,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:40,377 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 08:51:40,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:51:40,377 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:40,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:40,378 INFO L82 PathProgramCache]: Analyzing trace with hash 116411547, now seen corresponding path program 1 times [2020-09-25 08:51:40,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:40,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083092299] [2020-09-25 08:51:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:40,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:40,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:40,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:51:40,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:40,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 08:51:40,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:40,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:40,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 08:51:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:51:40,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:40,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:51:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:40,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:40,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:51:40,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:40,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:51:40,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:40,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:40,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:40,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 08:51:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:40,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 08:51:40,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 08:51:40,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:40,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 08:51:40,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:51:40,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:40,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:51:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:40,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:40,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:51:40,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:40,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 08:51:40,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:40,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:51:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:51:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:51:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:51:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:51:40,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:51:40,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:51:40,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:51:40,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:51:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:51:40,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:51:40,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:51:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:51:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:51:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:51:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:51:40,802 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 08:51:40,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083092299] [2020-09-25 08:51:40,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:51:40,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:51:40,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440888145] [2020-09-25 08:51:40,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:51:40,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:51:40,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:51:40,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:51:40,805 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-09-25 08:51:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:51:41,004 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-09-25 08:51:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:51:41,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-25 08:51:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:51:41,006 INFO L225 Difference]: With dead ends: 97 [2020-09-25 08:51:41,006 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 08:51:41,007 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 08:51:41,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 08:51:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 08:51:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 08:51:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 08:51:41,015 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 55 [2020-09-25 08:51:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:51:41,016 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 08:51:41,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:51:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 08:51:41,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 08:51:41,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:51:41,018 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 08:51:41,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:51:41,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:51:41,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:51:41,019 INFO L82 PathProgramCache]: Analyzing trace with hash -278535077, now seen corresponding path program 1 times [2020-09-25 08:51:41,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:51:41,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031831906] [2020-09-25 08:51:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:51:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:51:41,040 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:51:41,040 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:51:41,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:51:41,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:51:41 BoogieIcfgContainer [2020-09-25 08:51:41,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:51:41,072 INFO L168 Benchmark]: Toolchain (without parser) took 5422.93 ms. Allocated memory was 145.8 MB in the beginning and 245.4 MB in the end (delta: 99.6 MB). Free memory was 102.5 MB in the beginning and 112.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:41,073 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:51:41,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.96 ms. Allocated memory is still 145.8 MB. Free memory was 101.9 MB in the beginning and 91.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:41,075 INFO L168 Benchmark]: Boogie Preprocessor took 165.31 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 91.1 MB in the beginning and 181.8 MB in the end (delta: -90.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:41,076 INFO L168 Benchmark]: RCFGBuilder took 561.21 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 160.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:41,077 INFO L168 Benchmark]: TraceAbstraction took 4268.04 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 159.5 MB in the beginning and 112.9 MB in the end (delta: 46.6 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. [2020-09-25 08:51:41,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 417.96 ms. Allocated memory is still 145.8 MB. Free memory was 101.9 MB in the beginning and 91.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.31 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 91.1 MB in the beginning and 181.8 MB in the end (delta: -90.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 561.21 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 160.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4268.04 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 159.5 MB in the beginning and 112.9 MB in the end (delta: 46.6 MB). Peak memory consumption was 87.5 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: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, 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, 0.3s 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, 2.4s 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...