/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=NARROWEST --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/s32if.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:10:32,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:10:32,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:10:32,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:10:32,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:10:32,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:10:32,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:10:32,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:10:32,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:10:32,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:10:32,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:10:32,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:10:32,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:10:32,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:10:32,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:10:32,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:10:32,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:10:32,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:10:32,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:10:32,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:10:32,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:10:32,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:10:32,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:10:32,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:10:32,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:10:32,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:10:32,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:10:32,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:10:32,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:10:32,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:10:32,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:10:32,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:10:32,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:10:32,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:10:32,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:10:32,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:10:32,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:10:32,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:10:32,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:10:32,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:10:32,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:10:32,897 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 05:10:32,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:10:32,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:10:32,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:10:32,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:10:32,932 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:10:32,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:10:32,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:10:32,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:10:32,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:10:32,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:10:32,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:10:32,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:10:32,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:10:32,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:10:32,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:10:32,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:10:32,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:10:32,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:10:32,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:10:32,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:10:32,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:10:32,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:10:32,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:10:32,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:10:32,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:10:32,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:10:32,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:10:32,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:10:32,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:10:32,940 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:10:33,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:10:33,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:10:33,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:10:33,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:10:33,309 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:10:33,310 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s32if.c [2020-10-13 05:10:33,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05f06628a/696994b55d6c424ca0aaa149018fb8df/FLAG508757fb4 [2020-10-13 05:10:33,900 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:10:33,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s32if.c [2020-10-13 05:10:33,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05f06628a/696994b55d6c424ca0aaa149018fb8df/FLAG508757fb4 [2020-10-13 05:10:34,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05f06628a/696994b55d6c424ca0aaa149018fb8df [2020-10-13 05:10:34,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:10:34,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:10:34,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:10:34,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:10:34,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:10:34,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:34" (1/1) ... [2020-10-13 05:10:34,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0b5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34, skipping insertion in model container [2020-10-13 05:10:34,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:34" (1/1) ... [2020-10-13 05:10:34,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:10:34,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:10:34,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:10:34,452 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:10:34,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:10:34,496 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:10:34,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34 WrapperNode [2020-10-13 05:10:34,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:10:34,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:10:34,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:10:34,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:10:34,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34" (1/1) ... [2020-10-13 05:10:34,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34" (1/1) ... [2020-10-13 05:10:34,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34" (1/1) ... [2020-10-13 05:10:34,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34" (1/1) ... [2020-10-13 05:10:34,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34" (1/1) ... [2020-10-13 05:10:34,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34" (1/1) ... [2020-10-13 05:10:34,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34" (1/1) ... [2020-10-13 05:10:34,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:10:34,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:10:34,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:10:34,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:10:34,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34" (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 05:10:34,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:10:34,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:10:34,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 05:10:34,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:10:34,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:10:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:10:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:10:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 05:10:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:10:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:10:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 05:10:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:10:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 05:10:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 05:10:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 05:10:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 05:10:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 05:10:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:10:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:10:34,953 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:10:34,953 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 05:10:34,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:34 BoogieIcfgContainer [2020-10-13 05:10:34,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:10:34,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:10:34,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:10:34,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:10:34,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:10:34" (1/3) ... [2020-10-13 05:10:34,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38aabd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:10:34, skipping insertion in model container [2020-10-13 05:10:34,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:34" (2/3) ... [2020-10-13 05:10:34,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38aabd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:10:34, skipping insertion in model container [2020-10-13 05:10:34,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:34" (3/3) ... [2020-10-13 05:10:34,966 INFO L109 eAbstractionObserver]: Analyzing ICFG s32if.c [2020-10-13 05:10:34,978 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:10:34,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:10:35,004 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:10:35,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:10:35,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:10:35,031 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:10:35,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:10:35,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:10:35,032 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:10:35,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:10:35,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:10:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-13 05:10:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 05:10:35,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:35,072 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] [2020-10-13 05:10:35,073 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:35,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-10-13 05:10:35,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:35,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170517117] [2020-10-13 05:10:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:35,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:35,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 05:10:35,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:10:35,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-13 05:10:35,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:35,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:35,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 05:10:35,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:35,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 05:10:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:35,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:36,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:36,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:10:36,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:36,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:36,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:36,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:36,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:36,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:10:36,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 05:10:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:36,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:36,021 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 05:10:36,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170517117] [2020-10-13 05:10:36,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:10:36,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:10:36,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913265205] [2020-10-13 05:10:36,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:10:36,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:36,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:10:36,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:10:36,056 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-13 05:10:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:36,221 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-10-13 05:10:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:10:36,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-13 05:10:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:36,241 INFO L225 Difference]: With dead ends: 62 [2020-10-13 05:10:36,242 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 05:10:36,248 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 05:10:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 05:10:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-13 05:10:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 05:10:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 05:10:36,308 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-10-13 05:10:36,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:36,309 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 05:10:36,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:10:36,310 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 05:10:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 05:10:36,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:36,312 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] [2020-10-13 05:10:36,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:10:36,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:36,317 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-10-13 05:10:36,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:36,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300468236] [2020-10-13 05:10:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:36,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:36,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 05:10:36,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:10:36,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-13 05:10:36,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:10:36,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:10:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:10:36,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:36,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:36,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:36,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:36,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:10:36,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:36,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:36,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:36,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:10:36,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:10:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:36,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:10:36,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:36,881 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 05:10:36,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300468236] [2020-10-13 05:10:36,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:10:36,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:10:36,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300567354] [2020-10-13 05:10:36,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:10:36,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:36,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:10:36,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:10:36,890 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 05:10:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:37,150 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-10-13 05:10:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:10:37,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-13 05:10:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:37,154 INFO L225 Difference]: With dead ends: 51 [2020-10-13 05:10:37,154 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 05:10:37,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:10:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 05:10:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-13 05:10:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 05:10:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-13 05:10:37,180 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-13 05:10:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:37,181 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-13 05:10:37,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:10:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-13 05:10:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:10:37,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:37,185 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 05:10:37,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:10:37,186 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:37,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:37,187 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-10-13 05:10:37,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:37,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964626551] [2020-10-13 05:10:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:38,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:41,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:41,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:10:41,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:10:41,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3808 [2020-10-13 05:10:41,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:10:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 05:10:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 05:10:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:41,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:41,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:41,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:41,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:10:41,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:41,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:41,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:41,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:41,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:10:41,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:10:41,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964626551] [2020-10-13 05:10:41,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:10:41,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:10:41,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398255946] [2020-10-13 05:10:41,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:10:41,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:10:41,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:10:41,576 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 14 states. [2020-10-13 05:10:42,355 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-13 05:10:42,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:42,731 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-13 05:10:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 05:10:42,732 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-10-13 05:10:42,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:42,737 INFO L225 Difference]: With dead ends: 54 [2020-10-13 05:10:42,737 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 05:10:42,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:10:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 05:10:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-10-13 05:10:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 05:10:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-13 05:10:42,749 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 31 [2020-10-13 05:10:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:42,750 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-13 05:10:42,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:10:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-13 05:10:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:10:42,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:42,751 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 05:10:42,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:10:42,752 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:42,753 INFO L82 PathProgramCache]: Analyzing trace with hash -525143438, now seen corresponding path program 1 times [2020-10-13 05:10:42,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:42,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298810824] [2020-10-13 05:10:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:42,767 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-13 05:10:42,767 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-13 05:10:42,767 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:10:42,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:10:42,795 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 05:10:42,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:10:42 BoogieIcfgContainer [2020-10-13 05:10:42,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:10:42,798 INFO L168 Benchmark]: Toolchain (without parser) took 8579.80 ms. Allocated memory was 138.9 MB in the beginning and 319.8 MB in the end (delta: 180.9 MB). Free memory was 102.5 MB in the beginning and 207.1 MB in the end (delta: -104.5 MB). Peak memory consumption was 76.4 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:42,799 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 138.9 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 05:10:42,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.34 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 91.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:42,801 INFO L168 Benchmark]: Boogie Preprocessor took 121.49 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 177.9 MB in the end (delta: -86.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:42,802 INFO L168 Benchmark]: RCFGBuilder took 339.43 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 159.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:42,803 INFO L168 Benchmark]: TraceAbstraction took 7836.03 ms. Allocated memory was 201.3 MB in the beginning and 319.8 MB in the end (delta: 118.5 MB). Free memory was 159.1 MB in the beginning and 207.1 MB in the end (delta: -48.0 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:42,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 138.9 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 277.34 ms. Allocated memory is still 138.9 MB. Free memory was 102.3 MB in the beginning and 91.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.49 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 177.9 MB in the end (delta: -86.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.43 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 159.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7836.03 ms. Allocated memory was 201.3 MB in the beginning and 319.8 MB in the end (delta: 118.5 MB). Free memory was 159.1 MB in the beginning and 207.1 MB in the end (delta: -48.0 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i