/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/s4liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:15:25,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:15:25,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:15:25,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:15:25,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:15:25,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:15:25,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:15:25,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:15:25,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:15:25,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:15:25,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:15:25,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:15:25,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:15:25,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:15:25,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:15:25,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:15:25,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:15:25,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:15:25,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:15:25,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:15:25,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:15:25,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:15:25,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:15:25,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:15:25,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:15:25,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:15:25,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:15:25,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:15:25,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:15:25,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:15:25,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:15:25,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:15:25,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:15:25,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:15:25,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:15:25,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:15:25,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:15:25,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:15:25,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:15:25,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:15:25,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:15:25,708 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 [2020-10-14 18:15:25,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:15:25,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:15:25,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:15:25,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:15:25,762 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:15:25,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:15:25,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:15:25,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:15:25,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:15:25,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:15:25,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:15:25,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:15:25,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:15:25,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:15:25,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:15:25,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:15:25,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:15:25,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:15:25,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:15:25,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:15:25,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:15:25,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:15:25,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:15:25,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:15:25,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:15:25,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:15:25,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:15:25,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:15:25,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:15:25,769 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:15:26,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:15:26,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:15:26,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:15:26,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:15:26,148 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:15:26,149 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4liff.c [2020-10-14 18:15:26,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74c94d84d/f59215a5897d4da9a8892109879248b9/FLAG87f1bf828 [2020-10-14 18:15:26,766 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:15:26,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4liff.c [2020-10-14 18:15:26,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74c94d84d/f59215a5897d4da9a8892109879248b9/FLAG87f1bf828 [2020-10-14 18:15:27,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74c94d84d/f59215a5897d4da9a8892109879248b9 [2020-10-14 18:15:27,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:15:27,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:15:27,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:15:27,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:15:27,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:15:27,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:15:27" (1/1) ... [2020-10-14 18:15:27,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749394c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27, skipping insertion in model container [2020-10-14 18:15:27,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:15:27" (1/1) ... [2020-10-14 18:15:27,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:15:27,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:15:27,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:15:27,399 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:15:27,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:15:27,437 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:15:27,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27 WrapperNode [2020-10-14 18:15:27,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:15:27,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:15:27,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:15:27,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:15:27,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27" (1/1) ... [2020-10-14 18:15:27,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27" (1/1) ... [2020-10-14 18:15:27,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27" (1/1) ... [2020-10-14 18:15:27,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27" (1/1) ... [2020-10-14 18:15:27,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27" (1/1) ... [2020-10-14 18:15:27,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27" (1/1) ... [2020-10-14 18:15:27,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27" (1/1) ... [2020-10-14 18:15:27,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:15:27,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:15:27,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:15:27,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:15:27,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27" (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 [2020-10-14 18:15:27,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:15:27,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:15:27,646 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:15:27,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:15:27,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:15:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:15:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:15:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:15:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:15:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:15:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 18:15:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:15:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:15:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 18:15:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:15:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:15:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:15:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:15:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:15:28,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:15:28,001 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:15:28,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:15:28 BoogieIcfgContainer [2020-10-14 18:15:28,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:15:28,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:15:28,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:15:28,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:15:28,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:15:27" (1/3) ... [2020-10-14 18:15:28,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2799a5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:15:28, skipping insertion in model container [2020-10-14 18:15:28,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:27" (2/3) ... [2020-10-14 18:15:28,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2799a5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:15:28, skipping insertion in model container [2020-10-14 18:15:28,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:15:28" (3/3) ... [2020-10-14 18:15:28,021 INFO L109 eAbstractionObserver]: Analyzing ICFG s4liff.c [2020-10-14 18:15:28,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:15:28,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:15:28,063 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:15:28,100 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:15:28,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:15:28,101 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:15:28,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:15:28,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:15:28,101 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:15:28,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:15:28,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:15:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-14 18:15:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 18:15:28,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:15:28,130 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] [2020-10-14 18:15:28,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:15:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:15:28,137 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-10-14 18:15:28,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:15:28,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495302725] [2020-10-14 18:15:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:15:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:15:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:15:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 18:15:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:15:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-14 18:15:29,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:15:29,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:15:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:15:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:15:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:15:29,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:15:29,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:15:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:15:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:29,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:15:29,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:15:29,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:15:29,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:15:29,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:15:29,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:15:29,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:15:29,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:15:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:15:29,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:15:29,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:15:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:15:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:29,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:15:29,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:15:29,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:15:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:15:29,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:15:29,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:15:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:15:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:15:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:15:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:15:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:15:29,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495302725] [2020-10-14 18:15:29,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:15:29,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:15:29,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214380385] [2020-10-14 18:15:29,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:15:29,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:15:29,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:15:29,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:15:29,728 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-10-14 18:15:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:15:29,969 INFO L93 Difference]: Finished difference Result 67 states and 89 transitions. [2020-10-14 18:15:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:15:29,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-14 18:15:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:15:29,982 INFO L225 Difference]: With dead ends: 67 [2020-10-14 18:15:29,982 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 18:15:29,987 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 [2020-10-14 18:15:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 18:15:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 18:15:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 18:15:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-14 18:15:30,039 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-10-14 18:15:30,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:15:30,040 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-14 18:15:30,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:15:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-14 18:15:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:15:30,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:15:30,042 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] [2020-10-14 18:15:30,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:15:30,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:15:30,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:15:30,044 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-10-14 18:15:30,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:15:30,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585055852] [2020-10-14 18:15:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:15:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 18:15:30,074 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 18:15:30,074 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:15:30,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:15:30,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:15:30 BoogieIcfgContainer [2020-10-14 18:15:30,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:15:30,127 INFO L168 Benchmark]: Toolchain (without parser) took 3051.92 ms. Allocated memory was 146.8 MB in the beginning and 234.9 MB in the end (delta: 88.1 MB). Free memory was 102.8 MB in the beginning and 165.7 MB in the end (delta: -62.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:30,131 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 18:15:30,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.48 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 92.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:30,135 INFO L168 Benchmark]: Boogie Preprocessor took 141.30 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 92.2 MB in the beginning and 180.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:30,136 INFO L168 Benchmark]: RCFGBuilder took 426.05 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 162.2 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:30,146 INFO L168 Benchmark]: TraceAbstraction took 2114.24 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 161.3 MB in the beginning and 165.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:30,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.48 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 92.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.30 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 92.2 MB in the beginning and 180.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.05 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 162.2 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2114.24 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 161.3 MB in the beginning and 165.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 27.6 MB. 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] = N [L30] i=0 [L30] COND TRUE i