/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s4liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:23:49,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:23:49,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:23:49,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:23:49,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:23:49,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:23:49,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:23:49,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:23:49,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:23:49,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:23:49,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:23:49,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:23:49,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:23:49,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:23:49,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:23:49,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:23:49,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:23:49,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:23:49,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:23:49,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:23:49,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:23:49,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:23:49,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:23:49,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:23:49,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:23:49,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:23:49,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:23:49,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:23:49,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:23:49,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:23:49,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:23:49,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:23:49,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:23:49,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:23:49,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:23:49,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:23:49,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:23:49,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:23:49,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:23:49,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:23:49,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:23:49,656 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 [2020-08-22 06:23:49,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:23:49,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:23:49,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:23:49,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:23:49,702 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:23:49,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:23:49,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:23:49,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:23:49,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:23:49,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:23:49,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:23:49,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:23:49,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:23:49,705 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:23:49,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:23:49,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:23:49,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:23:49,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:23:49,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:23:49,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:23:49,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:23:49,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:23:49,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:23:49,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:23:49,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:23:49,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:23:49,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:23:49,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:23:49,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:23:49,708 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:23:50,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:23:50,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:23:50,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:23:50,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:23:50,028 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:23:50,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4liff.c [2020-08-22 06:23:50,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83e4fdfc4/d2f7472416f145de8fa332ade1394334/FLAG077c07085 [2020-08-22 06:23:50,513 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:23:50,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4liff.c [2020-08-22 06:23:50,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83e4fdfc4/d2f7472416f145de8fa332ade1394334/FLAG077c07085 [2020-08-22 06:23:50,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83e4fdfc4/d2f7472416f145de8fa332ade1394334 [2020-08-22 06:23:50,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:23:50,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:23:50,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:50,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:23:50,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:23:50,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:50" (1/1) ... [2020-08-22 06:23:50,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421e6203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:50, skipping insertion in model container [2020-08-22 06:23:50,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:50" (1/1) ... [2020-08-22 06:23:50,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:23:50,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:23:51,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:51,125 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:23:51,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:51,163 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:23:51,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51 WrapperNode [2020-08-22 06:23:51,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:51,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:23:51,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:23:51,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:23:51,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51" (1/1) ... [2020-08-22 06:23:51,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51" (1/1) ... [2020-08-22 06:23:51,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51" (1/1) ... [2020-08-22 06:23:51,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51" (1/1) ... [2020-08-22 06:23:51,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51" (1/1) ... [2020-08-22 06:23:51,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51" (1/1) ... [2020-08-22 06:23:51,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51" (1/1) ... [2020-08-22 06:23:51,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:23:51,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:23:51,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:23:51,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:23:51,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51" (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 [2020-08-22 06:23:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:23:51,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:23:51,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:23:51,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:23:51,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:23:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:23:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:23:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:23:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:23:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:23:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:23:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:23:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:23:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:23:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:23:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:23:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:23:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:23:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:23:51,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:23:51,628 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 06:23:51,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:51 BoogieIcfgContainer [2020-08-22 06:23:51,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:23:51,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:23:51,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:23:51,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:23:51,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:23:50" (1/3) ... [2020-08-22 06:23:51,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10683912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:51, skipping insertion in model container [2020-08-22 06:23:51,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:51" (2/3) ... [2020-08-22 06:23:51,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10683912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:51, skipping insertion in model container [2020-08-22 06:23:51,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:51" (3/3) ... [2020-08-22 06:23:51,643 INFO L109 eAbstractionObserver]: Analyzing ICFG s4liff.c [2020-08-22 06:23:51,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:23:51,666 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:23:51,687 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:23:51,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:23:51,743 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:23:51,743 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:23:51,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:23:51,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:23:51,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:23:51,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:23:51,744 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:23:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-22 06:23:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 06:23:51,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:51,777 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] [2020-08-22 06:23:51,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-08-22 06:23:51,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:51,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454947781] [2020-08-22 06:23:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:51,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:23:51,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454947781] [2020-08-22 06:23:51,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:51,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:23:52,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125524242] [2020-08-22 06:23:52,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:23:52,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:52,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:23:52,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:23:52,024 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-22 06:23:52,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:52,194 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-22 06:23:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:23:52,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-22 06:23:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:52,212 INFO L225 Difference]: With dead ends: 60 [2020-08-22 06:23:52,213 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 06:23:52,217 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 [2020-08-22 06:23:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 06:23:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-22 06:23:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 06:23:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-22 06:23:52,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-22 06:23:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:52,255 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-22 06:23:52,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:23:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-22 06:23:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 06:23:52,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:52,256 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] [2020-08-22 06:23:52,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:23:52,257 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:52,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:52,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-22 06:23:52,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:52,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907737659] [2020-08-22 06:23:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:23:52,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907737659] [2020-08-22 06:23:52,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:52,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:23:52,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459869772] [2020-08-22 06:23:52,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:23:52,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:52,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:23:52,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:23:52,393 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-22 06:23:52,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:52,533 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-22 06:23:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:23:52,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-22 06:23:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:52,536 INFO L225 Difference]: With dead ends: 48 [2020-08-22 06:23:52,536 INFO L226 Difference]: Without dead ends: 35 [2020-08-22 06:23:52,537 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 [2020-08-22 06:23:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-22 06:23:52,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-22 06:23:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 06:23:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-22 06:23:52,547 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-22 06:23:52,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:52,547 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-22 06:23:52,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:23:52,547 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-22 06:23:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 06:23:52,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:52,549 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] [2020-08-22 06:23:52,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:23:52,549 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:52,550 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-22 06:23:52,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:52,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118518492] [2020-08-22 06:23:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:23:52,606 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:23:52,606 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:23:52,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:23:52,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:23:52 BoogieIcfgContainer [2020-08-22 06:23:52,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:23:52,633 INFO L168 Benchmark]: Toolchain (without parser) took 1740.16 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 106.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:52,634 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 06:23:52,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.22 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:52,636 INFO L168 Benchmark]: Boogie Preprocessor took 115.62 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 180.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:52,637 INFO L168 Benchmark]: RCFGBuilder took 354.24 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 162.7 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:52,638 INFO L168 Benchmark]: TraceAbstraction took 993.90 ms. Allocated memory is still 203.4 MB. Free memory was 161.8 MB in the beginning and 106.8 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:52,643 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.22 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.62 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.3 MB in the beginning and 180.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.24 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 162.7 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 993.90 ms. Allocated memory is still 203.4 MB. Free memory was 161.8 MB in the beginning and 106.8 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 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