/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 SingleStatement --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=LOWLEXORDER --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/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:49:19,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:49:19,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:49:19,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:49:19,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:49:19,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:49:19,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:49:19,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:49:19,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:49:19,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:49:19,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:49:19,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:49:19,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:49:19,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:49:19,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:49:19,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:49:19,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:49:19,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:49:19,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:49:19,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:49:19,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:49:19,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:49:19,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:49:19,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:49:19,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:49:19,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:49:19,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:49:19,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:49:19,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:49:19,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:49:19,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:49:19,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:49:19,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:49:19,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:49:19,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:49:19,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:49:19,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:49:19,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:49:19,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:49:19,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:49:19,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:49:19,589 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 [2020-09-24 21:49:19,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:49:19,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:49:19,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:49:19,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:49:19,632 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:49:19,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:49:19,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:49:19,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:49:19,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:49:19,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:49:19,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:49:19,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:49:19,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:49:19,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:49:19,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:49:19,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:49:19,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:49:19,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:49:19,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:49:19,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:49:19,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:49:19,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:49:19,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:49:19,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:49:19,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:49:19,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:49:19,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:49:19,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:49:19,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:49:19,637 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:49:20,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:49:20,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:49:20,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:49:20,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:49:20,146 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:49:20,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-09-24 21:49:20,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c878d8140/cd6484f2d5134d5599ee4e0aad3e9131/FLAGd0c4a8bea [2020-09-24 21:49:20,815 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:49:20,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ncompf.c [2020-09-24 21:49:20,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c878d8140/cd6484f2d5134d5599ee4e0aad3e9131/FLAGd0c4a8bea [2020-09-24 21:49:21,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c878d8140/cd6484f2d5134d5599ee4e0aad3e9131 [2020-09-24 21:49:21,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:49:21,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:49:21,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:49:21,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:49:21,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:49:21,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:49:21" (1/1) ... [2020-09-24 21:49:21,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21, skipping insertion in model container [2020-09-24 21:49:21,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:49:21" (1/1) ... [2020-09-24 21:49:21,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:49:21,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:49:21,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:49:21,478 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:49:21,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:49:21,523 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:49:21,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21 WrapperNode [2020-09-24 21:49:21,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:49:21,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:49:21,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:49:21,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:49:21,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21" (1/1) ... [2020-09-24 21:49:21,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21" (1/1) ... [2020-09-24 21:49:21,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21" (1/1) ... [2020-09-24 21:49:21,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21" (1/1) ... [2020-09-24 21:49:21,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21" (1/1) ... [2020-09-24 21:49:21,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21" (1/1) ... [2020-09-24 21:49:21,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21" (1/1) ... [2020-09-24 21:49:21,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:49:21,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:49:21,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:49:21,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:49:21,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21" (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 [2020-09-24 21:49:21,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:49:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:49:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:49:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:49:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:49:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:49:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:49:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:49:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:49:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:49:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:49:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:49:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:49:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:49:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:49:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:49:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:49:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:49:22,101 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:49:22,102 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 21:49:22,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:49:22 BoogieIcfgContainer [2020-09-24 21:49:22,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:49:22,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:49:22,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:49:22,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:49:22,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:49:21" (1/3) ... [2020-09-24 21:49:22,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584cfbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:49:22, skipping insertion in model container [2020-09-24 21:49:22,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:21" (2/3) ... [2020-09-24 21:49:22,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584cfbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:49:22, skipping insertion in model container [2020-09-24 21:49:22,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:49:22" (3/3) ... [2020-09-24 21:49:22,119 INFO L109 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-09-24 21:49:22,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:49:22,142 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:49:22,167 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:49:22,202 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:49:22,202 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:49:22,203 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:49:22,203 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:49:22,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:49:22,203 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:49:22,203 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:49:22,203 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:49:22,247 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-24 21:49:22,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 21:49:22,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:22,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:49:22,264 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:22,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1653700080, now seen corresponding path program 1 times [2020-09-24 21:49:22,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:22,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865740064] [2020-09-24 21:49:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:22,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:22,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865740064] [2020-09-24 21:49:22,781 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-24 21:49:22,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:22,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-24 21:49:22,782 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-24 21:49:22,783 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:49:22,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:49:22,812 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 21:49:22,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:49:22 BoogieIcfgContainer [2020-09-24 21:49:22,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:49:22,817 INFO L168 Benchmark]: Toolchain (without parser) took 1639.09 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 134.8 MB in the end (delta: -32.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:22,818 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 21:49:22,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.01 ms. Allocated memory is still 140.0 MB. Free memory was 102.1 MB in the beginning and 91.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:22,823 INFO L168 Benchmark]: Boogie Preprocessor took 149.72 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 179.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:22,823 INFO L168 Benchmark]: RCFGBuilder took 429.33 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 157.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:22,825 INFO L168 Benchmark]: TraceAbstraction took 703.03 ms. Allocated memory is still 202.4 MB. Free memory was 157.7 MB in the beginning and 134.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:22,833 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.01 ms. Allocated memory is still 140.0 MB. Free memory was 102.1 MB in the beginning and 91.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.72 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 179.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 429.33 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 157.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 703.03 ms. Allocated memory is still 202.4 MB. Free memory was 157.7 MB in the beginning and 134.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] a[0] = 6 [L31] b[0] = 1 [L32] c[0] = 0 [L33] i=1 [L33] COND FALSE !(i