/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:11:09,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:11:09,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:11:09,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:11:09,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:11:09,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:11:09,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:11:09,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:11:09,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:11:09,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:11:09,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:11:09,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:11:09,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:11:09,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:11:09,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:11:09,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:11:09,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:11:09,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:11:09,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:11:09,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:11:09,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:11:09,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:11:09,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:11:09,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:11:09,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:11:09,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:11:09,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:11:09,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:11:09,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:11:09,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:11:09,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:11:09,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:11:09,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:11:09,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:11:09,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:11:09,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:11:09,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:11:09,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:11:09,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:11:09,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:11:09,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:11:09,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 10:11:09,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:11:09,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:11:09,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:11:09,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:11:09,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:11:09,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:11:09,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:11:09,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:11:09,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:11:09,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:11:09,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:11:09,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:11:09,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:11:09,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:11:09,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:11:09,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:11:09,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:11:09,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:11:09,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:11:09,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:11:09,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:11:09,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:11:09,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:11:09,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:11:09,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:11:09,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:11:09,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:11:09,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:11:09,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:11:09,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:11:10,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:11:10,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:11:10,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:11:10,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:11:10,329 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:11:10,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn1.c [2020-10-12 10:11:10,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e555612b/7c406bf5106045b28eb51f93f26e4951/FLAG150759f09 [2020-10-12 10:11:10,862 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:11:10,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn1.c [2020-10-12 10:11:10,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e555612b/7c406bf5106045b28eb51f93f26e4951/FLAG150759f09 [2020-10-12 10:11:11,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e555612b/7c406bf5106045b28eb51f93f26e4951 [2020-10-12 10:11:11,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:11:11,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:11:11,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:11:11,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:11:11,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:11:11,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:11:11" (1/1) ... [2020-10-12 10:11:11,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb2c9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11, skipping insertion in model container [2020-10-12 10:11:11,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:11:11" (1/1) ... [2020-10-12 10:11:11,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:11:11,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:11:11,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:11:11,466 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:11:11,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:11:11,504 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:11:11,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11 WrapperNode [2020-10-12 10:11:11,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:11:11,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:11:11,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:11:11,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:11:11,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11" (1/1) ... [2020-10-12 10:11:11,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11" (1/1) ... [2020-10-12 10:11:11,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11" (1/1) ... [2020-10-12 10:11:11,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11" (1/1) ... [2020-10-12 10:11:11,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11" (1/1) ... [2020-10-12 10:11:11,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11" (1/1) ... [2020-10-12 10:11:11,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11" (1/1) ... [2020-10-12 10:11:11,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:11:11,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:11:11,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:11:11,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:11:11,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:11:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:11:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:11:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:11:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:11:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:11:11,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:11:11,700 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:11:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:11:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:11:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:11:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 10:11:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:11:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 10:11:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:11:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:11:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:11:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:11:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:11:12,010 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:11:12,010 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:11:12,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:11:12 BoogieIcfgContainer [2020-10-12 10:11:12,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:11:12,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:11:12,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:11:12,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:11:12,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:11:11" (1/3) ... [2020-10-12 10:11:12,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ee306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:11:12, skipping insertion in model container [2020-10-12 10:11:12,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:11" (2/3) ... [2020-10-12 10:11:12,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ee306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:11:12, skipping insertion in model container [2020-10-12 10:11:12,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:11:12" (3/3) ... [2020-10-12 10:11:12,022 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn1.c [2020-10-12 10:11:12,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:11:12,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:11:12,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:11:12,093 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:11:12,093 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:11:12,093 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:11:12,094 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:11:12,094 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:11:12,094 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:11:12,094 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:11:12,094 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:11:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-12 10:11:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:11:12,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:11:12,123 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] [2020-10-12 10:11:12,123 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:11:12,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:11:12,128 INFO L82 PathProgramCache]: Analyzing trace with hash -294712258, now seen corresponding path program 1 times [2020-10-12 10:11:12,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:11:12,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849855925] [2020-10-12 10:11:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:11:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:12,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:12,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849855925] [2020-10-12 10:11:12,712 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-12 10:11:12,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:11:12,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-12 10:11:12,716 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-12 10:11:12,717 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:11:12,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:11:12,750 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-12 10:11:12,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:11:12 BoogieIcfgContainer [2020-10-12 10:11:12,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:11:12,756 INFO L168 Benchmark]: Toolchain (without parser) took 1517.46 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 132.9 MB in the end (delta: -30.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:12,759 INFO L168 Benchmark]: CDTParser took 0.23 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). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 10:11:12,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.55 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 92.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:12,762 INFO L168 Benchmark]: Boogie Preprocessor took 135.61 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 180.7 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:12,765 INFO L168 Benchmark]: RCFGBuilder took 372.71 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 162.8 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:12,766 INFO L168 Benchmark]: TraceAbstraction took 735.81 ms. Allocated memory is still 203.4 MB. Free memory was 162.1 MB in the beginning and 132.9 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:12,776 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.55 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 92.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.61 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.9 MB in the beginning and 180.7 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.71 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 162.8 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 735.81 ms. Allocated memory is still 203.4 MB. Free memory was 162.1 MB in the beginning and 132.9 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 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 TRUE !cond [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] long long 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