/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=BIGGEST --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/s12iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:12:07,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:12:07,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:12:07,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:12:07,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:12:07,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:12:07,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:12:07,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:12:07,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:12:07,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:12:07,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:12:07,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:12:07,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:12:07,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:12:07,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:12:07,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:12:07,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:12:07,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:12:07,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:12:07,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:12:07,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:12:07,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:12:07,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:12:07,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:12:07,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:12:07,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:12:07,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:12:07,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:12:07,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:12:07,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:12:07,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:12:07,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:12:07,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:12:07,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:12:07,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:12:07,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:12:07,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:12:07,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:12:07,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:12:07,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:12:07,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:12:07,647 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 [2020-10-12 10:12:07,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:12:07,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:12:07,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:12:07,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:12:07,671 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:12:07,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:12:07,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:12:07,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:12:07,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:12:07,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:12:07,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:12:07,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:12:07,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:12:07,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:12:07,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:12:07,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:12:07,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:12:07,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:12:07,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:12:07,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:12:07,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:12:07,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:12:07,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:12:07,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:12:07,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:12:07,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:12:07,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:12:07,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:12:07,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:12:07,677 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:12:08,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:12:08,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:12:08,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:12:08,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:12:08,054 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:12:08,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12iff.c [2020-10-12 10:12:08,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceba8f018/7250740520954e998c12072ef76e89e8/FLAG6f12cb760 [2020-10-12 10:12:08,613 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:12:08,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s12iff.c [2020-10-12 10:12:08,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceba8f018/7250740520954e998c12072ef76e89e8/FLAG6f12cb760 [2020-10-12 10:12:08,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceba8f018/7250740520954e998c12072ef76e89e8 [2020-10-12 10:12:08,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:12:08,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:12:08,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:12:08,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:12:08,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:12:08,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:12:08" (1/1) ... [2020-10-12 10:12:08,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244669af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:08, skipping insertion in model container [2020-10-12 10:12:08,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:12:08" (1/1) ... [2020-10-12 10:12:09,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:12:09,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:12:09,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:12:09,221 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:12:09,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:12:09,263 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:12:09,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09 WrapperNode [2020-10-12 10:12:09,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:12:09,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:12:09,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:12:09,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:12:09,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09" (1/1) ... [2020-10-12 10:12:09,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09" (1/1) ... [2020-10-12 10:12:09,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09" (1/1) ... [2020-10-12 10:12:09,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09" (1/1) ... [2020-10-12 10:12:09,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09" (1/1) ... [2020-10-12 10:12:09,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09" (1/1) ... [2020-10-12 10:12:09,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09" (1/1) ... [2020-10-12 10:12:09,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:12:09,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:12:09,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:12:09,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:12:09,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09" (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 [2020-10-12 10:12:09,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:12:09,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:12:09,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:12:09,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:12:09,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:12:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:12:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:12:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:12:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:12:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:12:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 10:12:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:12:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:12:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 10:12:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:12:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:12:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:12:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:12:09,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:12:09,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:12:09,762 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:12:09,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:12:09 BoogieIcfgContainer [2020-10-12 10:12:09,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:12:09,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:12:09,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:12:09,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:12:09,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:12:08" (1/3) ... [2020-10-12 10:12:09,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@818cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:12:09, skipping insertion in model container [2020-10-12 10:12:09,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:12:09" (2/3) ... [2020-10-12 10:12:09,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@818cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:12:09, skipping insertion in model container [2020-10-12 10:12:09,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:12:09" (3/3) ... [2020-10-12 10:12:09,797 INFO L109 eAbstractionObserver]: Analyzing ICFG s12iff.c [2020-10-12 10:12:09,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:12:09,835 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:12:09,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:12:09,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:12:09,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:12:09,886 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:12:09,886 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:12:09,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:12:09,886 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:12:09,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:12:09,887 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:12:09,906 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-12 10:12:09,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 10:12:09,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:12:09,913 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] [2020-10-12 10:12:09,914 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:12:09,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:12:09,919 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-10-12 10:12:09,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:12:09,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203698047] [2020-10-12 10:12:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:12:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:12:10,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:12:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:12:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:12:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:12:10,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:12:10,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 10:12:10,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:12:10,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-12 10:12:10,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:12:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:12:10,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:12:10,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:12:10,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 10:12:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:12:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:12:10,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:12:10,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:12:10,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:12:10,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:12:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 10:12:10,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:12:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:12:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:12:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:12:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:12:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 10:12:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:12:10,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:12:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:12:10,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:12:10,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:12:10,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:12:10,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:12:10,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:12:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:12:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:12:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:12:10,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:12:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:12:10,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203698047] [2020-10-12 10:12:10,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:12:10,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:12:10,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798063544] [2020-10-12 10:12:10,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:12:10,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:12:10,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:12:10,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:12:10,979 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2020-10-12 10:12:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:12:11,219 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2020-10-12 10:12:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:12:11,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-12 10:12:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:12:11,230 INFO L225 Difference]: With dead ends: 69 [2020-10-12 10:12:11,230 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 10:12:11,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:12:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 10:12:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-12 10:12:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 10:12:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-12 10:12:11,280 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-12 10:12:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:12:11,281 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-12 10:12:11,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:12:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-12 10:12:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 10:12:11,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:12:11,283 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] [2020-10-12 10:12:11,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:12:11,284 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:12:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:12:11,284 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-10-12 10:12:11,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:12:11,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726802256] [2020-10-12 10:12:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:12:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 10:12:11,311 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 10:12:11,311 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:12:11,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:12:11,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:12:11 BoogieIcfgContainer [2020-10-12 10:12:11,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:12:11,340 INFO L168 Benchmark]: Toolchain (without parser) took 2355.13 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 102.6 MB in the beginning and 193.8 MB in the end (delta: -91.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:12:11,341 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 10:12:11,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.19 ms. Allocated memory is still 139.5 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. [2020-10-12 10:12:11,343 INFO L168 Benchmark]: Boogie Preprocessor took 136.52 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 91.5 MB in the beginning and 178.7 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-10-12 10:12:11,344 INFO L168 Benchmark]: RCFGBuilder took 373.69 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 159.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-10-12 10:12:11,345 INFO L168 Benchmark]: TraceAbstraction took 1560.13 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 159.2 MB in the beginning and 193.8 MB in the end (delta: -34.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 10:12:11,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.19 ms. Allocated memory is still 139.5 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 136.52 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 91.5 MB in the beginning and 178.7 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 373.69 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 159.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1560.13 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 159.2 MB in the beginning and 193.8 MB in the end (delta: -34.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a 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] = 1 [L30] i=0 [L30] COND TRUE i