/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:50:21,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:50:21,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:50:21,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:50:21,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:50:21,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:50:21,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:50:21,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:50:21,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:50:21,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:50:21,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:50:21,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:50:21,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:50:21,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:50:21,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:50:21,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:50:21,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:50:21,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:50:21,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:50:21,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:50:21,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:50:21,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:50:21,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:50:21,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:50:21,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:50:21,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:50:21,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:50:21,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:50:21,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:50:21,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:50:21,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:50:21,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:50:21,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:50:21,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:50:21,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:50:21,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:50:21,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:50:21,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:50:21,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:50:21,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:50:21,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:50:21,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:50:21,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:50:21,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:50:21,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:50:21,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:50:21,977 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:50:21,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:50:21,977 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:50:21,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:50:21,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:50:21,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:50:21,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:50:21,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:50:21,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:50:21,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:50:21,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:50:21,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:50:21,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:50:21,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:50:21,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:50:21,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:50:21,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:50:21,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:50:21,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:50:21,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:50:21,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:50:21,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:50:21,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:50:21,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:50:21,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:50:21,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:50:22,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:50:22,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:50:22,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:50:22,310 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:50:22,311 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:50:22,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-10-13 23:50:22,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5537bd660/18276e812fe44f6498f5e4112eaebee1/FLAG5926fb804 [2020-10-13 23:50:22,796 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:50:22,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condgf.c [2020-10-13 23:50:22,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5537bd660/18276e812fe44f6498f5e4112eaebee1/FLAG5926fb804 [2020-10-13 23:50:23,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5537bd660/18276e812fe44f6498f5e4112eaebee1 [2020-10-13 23:50:23,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:50:23,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:50:23,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:50:23,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:50:23,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:50:23,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:50:23" (1/1) ... [2020-10-13 23:50:23,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8c36e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23, skipping insertion in model container [2020-10-13 23:50:23,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:50:23" (1/1) ... [2020-10-13 23:50:23,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:50:23,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:50:23,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:50:23,481 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:50:23,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:50:23,523 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:50:23,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23 WrapperNode [2020-10-13 23:50:23,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:50:23,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:50:23,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:50:23,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:50:23,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23" (1/1) ... [2020-10-13 23:50:23,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23" (1/1) ... [2020-10-13 23:50:23,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23" (1/1) ... [2020-10-13 23:50:23,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23" (1/1) ... [2020-10-13 23:50:23,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23" (1/1) ... [2020-10-13 23:50:23,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23" (1/1) ... [2020-10-13 23:50:23,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23" (1/1) ... [2020-10-13 23:50:23,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:50:23,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:50:23,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:50:23,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:50:23,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:50:23,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:50:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:50:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:50:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:50:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:50:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:50:23,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:50:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:50:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:50:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:50:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 23:50:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:50:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:50:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 23:50:23,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:50:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:50:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:50:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:50:23,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:50:24,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:50:24,122 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 23:50:24,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:50:24 BoogieIcfgContainer [2020-10-13 23:50:24,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:50:24,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:50:24,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:50:24,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:50:24,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:50:23" (1/3) ... [2020-10-13 23:50:24,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9f136b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:50:24, skipping insertion in model container [2020-10-13 23:50:24,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:23" (2/3) ... [2020-10-13 23:50:24,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9f136b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:50:24, skipping insertion in model container [2020-10-13 23:50:24,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:50:24" (3/3) ... [2020-10-13 23:50:24,136 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-10-13 23:50:24,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:50:24,157 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:50:24,176 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:50:24,201 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:50:24,202 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:50:24,202 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:50:24,202 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:50:24,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:50:24,203 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:50:24,203 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:50:24,203 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:50:24,226 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-13 23:50:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 23:50:24,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:24,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:24,235 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:24,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:24,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1314310818, now seen corresponding path program 1 times [2020-10-13 23:50:24,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:24,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981747114] [2020-10-13 23:50:24,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:24,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:24,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:25,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:25,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:50:25,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:50:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-13 23:50:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:25,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:50:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:25,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 23:50:25,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:25,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:25,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:25,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:50:25,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:25,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:50:25,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:50:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:25,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:25,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:50:25,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:50:25,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:25,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 23:50:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:50:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:50:25,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981747114] [2020-10-13 23:50:25,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:50:25,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:50:25,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646663222] [2020-10-13 23:50:25,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:50:25,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:25,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:50:25,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:50:25,598 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-13 23:50:25,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:25,751 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2020-10-13 23:50:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:50:25,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-13 23:50:25,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:25,767 INFO L225 Difference]: With dead ends: 66 [2020-10-13 23:50:25,767 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:50:25,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:50:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:50:25,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-13 23:50:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:50:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 23:50:25,808 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-13 23:50:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:25,808 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 23:50:25,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:50:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 23:50:25,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 23:50:25,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:25,810 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] [2020-10-13 23:50:25,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:50:25,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:25,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:25,811 INFO L82 PathProgramCache]: Analyzing trace with hash 34447140, now seen corresponding path program 1 times [2020-10-13 23:50:25,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:25,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413625818] [2020-10-13 23:50:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:25,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:26,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:26,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:26,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:26,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:50:26,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:50:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-13 23:50:26,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:26,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:50:26,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:50:26,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:50:26,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:50:26,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:50:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:26,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:26,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:26,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:50:26,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:26,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:50:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:26,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:50:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:50:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:50:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:50:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:26,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:26,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:50:26,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:50:26,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:50:26,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:26,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:26,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:50:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:50:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:50:26,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:50:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:50:26,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413625818] [2020-10-13 23:50:26,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:50:26,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:50:26,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521688663] [2020-10-13 23:50:26,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:50:26,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:50:26,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:50:26,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:50:26,573 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 23:50:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:50:26,739 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-13 23:50:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:50:26,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-13 23:50:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:50:26,742 INFO L225 Difference]: With dead ends: 55 [2020-10-13 23:50:26,742 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 23:50:26,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:50:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 23:50:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-13 23:50:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 23:50:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-13 23:50:26,755 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2020-10-13 23:50:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:50:26,755 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-13 23:50:26,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:50:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-13 23:50:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 23:50:26,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:26,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:50:26,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:50:26,758 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:26,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1408881596, now seen corresponding path program 1 times [2020-10-13 23:50:26,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:26,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092967340] [2020-10-13 23:50:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:26,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:27,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:28,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:50:28,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 23:50:28,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:50:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-13 23:50:28,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:50:28,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:50:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:50:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 23:50:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 23:50:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:50:28,901 ERROR L253 erpolLogProxyWrapper]: Interpolant 10 not inductive [2020-10-13 23:50:28,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:50:28,912 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-13 23:50:28,919 INFO L168 Benchmark]: Toolchain (without parser) took 5677.44 ms. Allocated memory was 144.2 MB in the beginning and 278.4 MB in the end (delta: 134.2 MB). Free memory was 102.0 MB in the beginning and 123.4 MB in the end (delta: -21.4 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-10-13 23:50:28,920 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 23:50:28,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.71 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 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. [2020-10-13 23:50:28,922 INFO L168 Benchmark]: Boogie Preprocessor took 192.35 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 91.1 MB in the beginning and 180.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-13 23:50:28,923 INFO L168 Benchmark]: RCFGBuilder took 410.34 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 160.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-10-13 23:50:28,924 INFO L168 Benchmark]: TraceAbstraction took 4786.58 ms. Allocated memory was 202.9 MB in the beginning and 278.4 MB in the end (delta: 75.5 MB). Free memory was 160.7 MB in the beginning and 123.4 MB in the end (delta: 37.3 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-10-13 23:50:28,928 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.71 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 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 192.35 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 91.1 MB in the beginning and 180.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.34 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 160.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4786.58 ms. Allocated memory was 202.9 MB in the beginning and 278.4 MB in the end (delta: 75.5 MB). Free memory was 160.7 MB in the beginning and 123.4 MB in the end (delta: 37.3 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...