/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=HIGHLEXORDER --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/modnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:54:49,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:54:49,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:54:49,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:54:49,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:54:49,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:54:49,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:54:49,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:54:49,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:54:49,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:54:49,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:54:49,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:54:49,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:54:49,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:54:49,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:54:49,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:54:49,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:54:49,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:54:49,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:54:49,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:54:49,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:54:49,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:54:49,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:54:49,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:54:49,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:54:49,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:54:49,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:54:49,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:54:49,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:54:49,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:54:49,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:54:49,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:54:49,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:54:49,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:54:49,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:54:49,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:54:49,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:54:49,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:54:49,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:54:49,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:54:49,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:54:49,147 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 22:54:49,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:54:49,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:54:49,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:54:49,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:54:49,196 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:54:49,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:54:49,197 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:54:49,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:54:49,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:54:49,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:54:49,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:54:49,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:54:49,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:54:49,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:54:49,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:54:49,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:54:49,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:54:49,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:54:49,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:54:49,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:54:49,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:54:49,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:49,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:54:49,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:54:49,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:54:49,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:54:49,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:54:49,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:54:49,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:54:49,203 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:54:49,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:54:49,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:54:49,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:54:49,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:54:49,759 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:54:49,760 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modnf.c [2020-09-24 22:54:49,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd09db718/846e6bb905e2472e8bf65b86ec2a4fd1/FLAG3b011abcf [2020-09-24 22:54:50,327 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:54:50,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modnf.c [2020-09-24 22:54:50,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd09db718/846e6bb905e2472e8bf65b86ec2a4fd1/FLAG3b011abcf [2020-09-24 22:54:50,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd09db718/846e6bb905e2472e8bf65b86ec2a4fd1 [2020-09-24 22:54:50,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:54:50,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:54:50,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:50,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:54:50,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:54:50,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:50" (1/1) ... [2020-09-24 22:54:50,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36687376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:50, skipping insertion in model container [2020-09-24 22:54:50,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:50" (1/1) ... [2020-09-24 22:54:50,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:54:50,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:54:51,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:51,073 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:54:51,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:51,142 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:54:51,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51 WrapperNode [2020-09-24 22:54:51,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:51,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:54:51,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:54:51,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:54:51,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51" (1/1) ... [2020-09-24 22:54:51,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51" (1/1) ... [2020-09-24 22:54:51,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51" (1/1) ... [2020-09-24 22:54:51,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51" (1/1) ... [2020-09-24 22:54:51,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51" (1/1) ... [2020-09-24 22:54:51,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51" (1/1) ... [2020-09-24 22:54:51,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51" (1/1) ... [2020-09-24 22:54:51,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:54:51,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:54:51,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:54:51,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:54:51,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51" (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 [2020-09-24 22:54:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:54:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:54:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:54:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:54:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:54:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:54:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:54:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:54:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:54:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:54:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:54:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:54:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:54:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:54:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:54:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:54:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:54:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:54:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:54:51,812 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:54:51,813 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 22:54:51,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:51 BoogieIcfgContainer [2020-09-24 22:54:51,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:54:51,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:54:51,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:54:51,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:54:51,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:54:50" (1/3) ... [2020-09-24 22:54:51,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaea107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:51, skipping insertion in model container [2020-09-24 22:54:51,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:51" (2/3) ... [2020-09-24 22:54:51,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaea107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:51, skipping insertion in model container [2020-09-24 22:54:51,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:51" (3/3) ... [2020-09-24 22:54:51,828 INFO L109 eAbstractionObserver]: Analyzing ICFG modnf.c [2020-09-24 22:54:51,844 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:54:51,854 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:54:51,876 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:54:51,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:54:51,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:54:51,905 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:54:51,905 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:54:51,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:54:51,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:54:51,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:54:51,906 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:54:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-24 22:54:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:54:51,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:51,937 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] [2020-09-24 22:54:51,938 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:51,944 INFO L82 PathProgramCache]: Analyzing trace with hash 864246722, now seen corresponding path program 1 times [2020-09-24 22:54:51,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:51,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135325903] [2020-09-24 22:54:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:52,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:52,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:52,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 22:54:52,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:54:52,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-09-24 22:54:52,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:54:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 22:54:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 22:54:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:54:52,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:52,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:52,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:52,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:52,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:54:52,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:52,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:52,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:52,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:52,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:52,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:52,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:52,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:52,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:54:52,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:52,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135325903] [2020-09-24 22:54:52,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:52,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:54:52,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576345834] [2020-09-24 22:54:52,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:54:52,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:52,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:54:52,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:54:52,983 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 6 states. [2020-09-24 22:54:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:53,438 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2020-09-24 22:54:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:54:53,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 22:54:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:53,456 INFO L225 Difference]: With dead ends: 136 [2020-09-24 22:54:53,457 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 22:54:53,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:54:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 22:54:53,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-09-24 22:54:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:54:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-09-24 22:54:53,523 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 33 [2020-09-24 22:54:53,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:53,524 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-09-24 22:54:53,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:54:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-09-24 22:54:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 22:54:53,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:53,526 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:53,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:54:53,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:53,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:53,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1661969402, now seen corresponding path program 1 times [2020-09-24 22:54:53,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:53,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654054540] [2020-09-24 22:54:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:53,549 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 22:54:53,549 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 22:54:53,550 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:54:53,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:54:53,577 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 22:54:53,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:54:53 BoogieIcfgContainer [2020-09-24 22:54:53,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:54:53,581 INFO L168 Benchmark]: Toolchain (without parser) took 2897.40 ms. Allocated memory was 115.3 MB in the beginning and 185.6 MB in the end (delta: 70.3 MB). Free memory was 73.5 MB in the beginning and 114.3 MB in the end (delta: -40.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:53,583 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory was 90.8 MB in the beginning and 90.7 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-24 22:54:53,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.75 ms. Allocated memory was 115.3 MB in the beginning and 130.0 MB in the end (delta: 14.7 MB). Free memory was 72.8 MB in the beginning and 98.8 MB in the end (delta: -25.9 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:53,585 INFO L168 Benchmark]: Boogie Preprocessor took 156.86 ms. Allocated memory was 130.0 MB in the beginning and 165.2 MB in the end (delta: 35.1 MB). Free memory was 98.8 MB in the beginning and 149.9 MB in the end (delta: -51.1 MB). Peak memory consumption was 412.7 kB. Max. memory is 7.1 GB. [2020-09-24 22:54:53,586 INFO L168 Benchmark]: RCFGBuilder took 516.05 ms. Allocated memory is still 165.2 MB. Free memory was 149.9 MB in the beginning and 131.6 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:53,587 INFO L168 Benchmark]: TraceAbstraction took 1757.87 ms. Allocated memory was 165.2 MB in the beginning and 185.6 MB in the end (delta: 20.4 MB). Free memory was 131.1 MB in the beginning and 114.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:53,592 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory was 90.8 MB in the beginning and 90.7 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 456.75 ms. Allocated memory was 115.3 MB in the beginning and 130.0 MB in the end (delta: 14.7 MB). Free memory was 72.8 MB in the beginning and 98.8 MB in the end (delta: -25.9 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.86 ms. Allocated memory was 130.0 MB in the beginning and 165.2 MB in the end (delta: 35.1 MB). Free memory was 98.8 MB in the beginning and 149.9 MB in the end (delta: -51.1 MB). Peak memory consumption was 412.7 kB. Max. memory is 7.1 GB. * RCFGBuilder took 516.05 ms. Allocated memory is still 165.2 MB. Free memory was 149.9 MB in the beginning and 131.6 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1757.87 ms. Allocated memory was 165.2 MB in the beginning and 185.6 MB in the end (delta: 20.4 MB). Free memory was 131.1 MB in the beginning and 114.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 37.3 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i