/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=DEEPEST --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/nsqm-iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:09:00,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:09:00,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:09:00,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:09:00,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:09:00,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:09:00,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:09:00,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:09:00,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:09:00,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:09:00,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:09:00,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:09:00,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:09:00,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:09:00,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:09:00,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:09:00,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:09:00,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:09:00,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:09:00,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:09:00,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:09:00,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:09:00,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:09:00,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:09:00,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:09:00,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:09:00,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:09:00,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:09:00,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:09:00,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:09:00,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:09:00,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:09:00,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:09:00,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:09:00,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:09:00,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:09:00,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:09:00,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:09:00,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:09:00,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:09:00,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:09:00,715 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 [2020-09-25 01:09:00,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:09:00,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:09:00,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:09:00,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:09:00,766 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:09:00,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:09:00,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:09:00,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:09:00,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:09:00,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:09:00,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:09:00,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:09:00,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:09:00,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:09:00,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:09:00,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:09:00,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:09:00,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:09:00,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:09:00,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:09:00,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:09:00,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:09:00,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:09:00,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:09:00,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:09:00,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:09:00,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:09:00,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:09:00,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:09:00,773 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:09:01,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:09:01,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:09:01,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:09:01,307 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:09:01,307 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:09:01,308 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/nsqm-iff.c [2020-09-25 01:09:01,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64ccd1e85/c80781beda634df192a5ad7df42dac6c/FLAG936be7096 [2020-09-25 01:09:01,948 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:09:01,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/nsqm-iff.c [2020-09-25 01:09:01,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64ccd1e85/c80781beda634df192a5ad7df42dac6c/FLAG936be7096 [2020-09-25 01:09:02,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64ccd1e85/c80781beda634df192a5ad7df42dac6c [2020-09-25 01:09:02,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:09:02,308 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:09:02,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:02,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:09:02,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:09:02,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:02" (1/1) ... [2020-09-25 01:09:02,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3add5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02, skipping insertion in model container [2020-09-25 01:09:02,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:02" (1/1) ... [2020-09-25 01:09:02,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:09:02,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:09:02,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:02,674 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:09:02,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:02,743 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:09:02,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02 WrapperNode [2020-09-25 01:09:02,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:02,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:09:02,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:09:02,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:09:02,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02" (1/1) ... [2020-09-25 01:09:02,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02" (1/1) ... [2020-09-25 01:09:02,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02" (1/1) ... [2020-09-25 01:09:02,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02" (1/1) ... [2020-09-25 01:09:02,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02" (1/1) ... [2020-09-25 01:09:02,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02" (1/1) ... [2020-09-25 01:09:02,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02" (1/1) ... [2020-09-25 01:09:02,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:09:02,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:09:02,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:09:02,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:09:02,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02" (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 [2020-09-25 01:09:02,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:09:02,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:09:02,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:09:02,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:09:02,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:09:02,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:09:02,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:09:02,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:09:02,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:09:02,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:09:02,983 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:09:02,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:09:02,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:09:02,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:09:02,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:09:02,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:09:02,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:09:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:09:03,380 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:09:03,381 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 01:09:03,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:03 BoogieIcfgContainer [2020-09-25 01:09:03,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:09:03,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:09:03,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:09:03,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:09:03,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:09:02" (1/3) ... [2020-09-25 01:09:03,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175a9a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:03, skipping insertion in model container [2020-09-25 01:09:03,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:02" (2/3) ... [2020-09-25 01:09:03,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175a9a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:03, skipping insertion in model container [2020-09-25 01:09:03,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:03" (3/3) ... [2020-09-25 01:09:03,396 INFO L109 eAbstractionObserver]: Analyzing ICFG nsqm-iff.c [2020-09-25 01:09:03,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:09:03,417 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:09:03,438 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:09:03,466 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:09:03,466 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:09:03,467 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:09:03,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:09:03,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:09:03,467 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:09:03,467 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:09:03,467 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:09:03,490 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 01:09:03,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 01:09:03,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:03,500 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] [2020-09-25 01:09:03,501 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:03,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times [2020-09-25 01:09:03,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:03,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421185953] [2020-09-25 01:09:03,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:03,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:03,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421185953] [2020-09-25 01:09:03,797 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-25 01:09:03,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:09:03,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-25 01:09:03,798 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-25 01:09:03,799 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:09:03,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:09:03,845 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-25 01:09:03,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:09:03 BoogieIcfgContainer [2020-09-25 01:09:03,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:09:03,849 INFO L168 Benchmark]: Toolchain (without parser) took 1543.94 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 103.4 MB in the beginning and 142.4 MB in the end (delta: -39.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:03,851 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:09:03,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.42 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 91.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:03,853 INFO L168 Benchmark]: Boogie Preprocessor took 147.13 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 91.9 MB in the beginning and 179.2 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:03,854 INFO L168 Benchmark]: RCFGBuilder took 492.90 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 159.6 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:03,855 INFO L168 Benchmark]: TraceAbstraction took 457.56 ms. Allocated memory is still 201.9 MB. Free memory was 159.6 MB in the beginning and 142.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:03,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 436.42 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 91.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.13 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 91.9 MB in the beginning and 179.2 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.90 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 159.6 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 457.56 ms. Allocated memory is still 201.9 MB. Free memory was 159.6 MB in the beginning and 142.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 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); [L29] i=0 [L29] COND FALSE !(i