/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:46:51,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:46:51,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:46:51,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:46:51,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:46:51,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:46:51,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:46:51,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:46:51,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:46:51,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:46:51,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:46:51,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:46:51,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:46:51,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:46:51,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:46:51,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:46:51,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:46:51,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:46:51,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:46:51,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:46:51,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:46:51,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:46:51,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:46:51,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:46:51,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:46:51,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:46:51,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:46:51,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:46:51,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:46:51,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:46:51,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:46:51,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:46:51,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:46:51,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:46:51,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:46:51,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:46:51,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:46:51,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:46:51,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:46:51,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:46:51,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:46:51,597 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 14:46:51,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:46:51,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:46:51,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:46:51,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:46:51,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:46:51,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:46:51,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:46:51,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:46:51,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:46:51,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:46:51,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:46:51,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:46:51,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:46:51,652 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:46:51,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:46:51,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:46:51,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:46:51,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:46:51,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:46:51,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:46:51,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:46:51,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:46:51,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:46:51,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:46:51,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:46:51,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:46:51,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:46:51,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:46:51,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:46:51,655 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:46:52,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:46:52,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:46:52,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:46:52,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:46:52,155 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:46:52,156 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-09-25 14:46:52,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffe428fe7/45f4a0e6ab254914ad396620a758be18/FLAGc3d2a28eb [2020-09-25 14:46:52,770 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:46:52,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-09-25 14:46:52,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffe428fe7/45f4a0e6ab254914ad396620a758be18/FLAGc3d2a28eb [2020-09-25 14:46:53,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffe428fe7/45f4a0e6ab254914ad396620a758be18 [2020-09-25 14:46:53,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:46:53,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:46:53,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:46:53,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:46:53,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:46:53,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:46:53" (1/1) ... [2020-09-25 14:46:53,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3e3485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53, skipping insertion in model container [2020-09-25 14:46:53,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:46:53" (1/1) ... [2020-09-25 14:46:53,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:46:53,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:46:53,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:46:53,425 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:46:53,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:46:53,478 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:46:53,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53 WrapperNode [2020-09-25 14:46:53,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:46:53,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:46:53,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:46:53,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:46:53,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53" (1/1) ... [2020-09-25 14:46:53,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53" (1/1) ... [2020-09-25 14:46:53,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53" (1/1) ... [2020-09-25 14:46:53,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53" (1/1) ... [2020-09-25 14:46:53,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53" (1/1) ... [2020-09-25 14:46:53,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53" (1/1) ... [2020-09-25 14:46:53,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53" (1/1) ... [2020-09-25 14:46:53,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:46:53,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:46:53,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:46:53,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:46:53,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53" (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 14:46:53,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:46:53,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:46:53,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:46:53,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:46:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:46:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:46:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:46:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 14:46:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:46:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:46:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:46:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:46:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:46:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:46:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:46:54,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:46:54,090 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 14:46:54,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:46:54 BoogieIcfgContainer [2020-09-25 14:46:54,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:46:54,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:46:54,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:46:54,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:46:54,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:46:53" (1/3) ... [2020-09-25 14:46:54,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acab645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:46:54, skipping insertion in model container [2020-09-25 14:46:54,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:46:53" (2/3) ... [2020-09-25 14:46:54,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acab645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:46:54, skipping insertion in model container [2020-09-25 14:46:54,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:46:54" (3/3) ... [2020-09-25 14:46:54,105 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-09-25 14:46:54,117 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:46:54,127 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:46:54,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:46:54,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:46:54,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:46:54,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:46:54,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:46:54,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:46:54,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:46:54,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:46:54,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:46:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-25 14:46:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 14:46:54,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:54,205 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] [2020-09-25 14:46:54,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:54,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:54,212 INFO L82 PathProgramCache]: Analyzing trace with hash -36140131, now seen corresponding path program 1 times [2020-09-25 14:46:54,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:54,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680018439] [2020-09-25 14:46:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:54,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:54,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:55,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:55,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:46:55,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:46:55,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-25 14:46:55,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:55,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:55,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:46:55,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:46:55,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:46:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:46:55,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:46:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:46:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:46:55,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:46:55,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:46:55,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:46:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:46:55,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:46:55,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:46:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:46:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:46:55,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:46:55,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:46:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:46:55,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680018439] [2020-09-25 14:46:55,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:46:55,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:46:55,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546627148] [2020-09-25 14:46:55,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:46:55,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:46:55,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:46:55,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:46:55,280 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 5 states. [2020-09-25 14:46:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:46:55,713 INFO L93 Difference]: Finished difference Result 157 states and 188 transitions. [2020-09-25 14:46:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:46:55,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-25 14:46:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:46:55,730 INFO L225 Difference]: With dead ends: 157 [2020-09-25 14:46:55,730 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 14:46:55,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:46:55,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 14:46:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-09-25 14:46:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 14:46:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 14:46:55,788 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 28 [2020-09-25 14:46:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:46:55,788 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 14:46:55,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:46:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 14:46:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:46:55,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:46:55,791 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, 1, 1, 1, 1] [2020-09-25 14:46:55,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:46:55,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:46:55,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:46:55,792 INFO L82 PathProgramCache]: Analyzing trace with hash -362895398, now seen corresponding path program 1 times [2020-09-25 14:46:55,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:46:55,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182191016] [2020-09-25 14:46:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:46:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:46:55,860 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:46:55,860 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:46:55,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:46:55,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:46:55 BoogieIcfgContainer [2020-09-25 14:46:55,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:46:55,891 INFO L168 Benchmark]: Toolchain (without parser) took 2731.87 ms. Allocated memory was 143.1 MB in the beginning and 230.7 MB in the end (delta: 87.6 MB). Free memory was 105.1 MB in the beginning and 175.5 MB in the end (delta: -70.4 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:55,892 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 122.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-25 14:46:55,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.97 ms. Allocated memory is still 143.1 MB. Free memory was 104.3 MB in the beginning and 94.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:55,894 INFO L168 Benchmark]: Boogie Preprocessor took 124.44 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 94.0 MB in the beginning and 182.1 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:55,895 INFO L168 Benchmark]: RCFGBuilder took 491.79 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 161.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:55,896 INFO L168 Benchmark]: TraceAbstraction took 1790.24 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 161.5 MB in the beginning and 175.5 MB in the end (delta: -14.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:46:55,900 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 122.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.97 ms. Allocated memory is still 143.1 MB. Free memory was 104.3 MB in the beginning and 94.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.44 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 94.0 MB in the beginning and 182.1 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.79 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 161.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1790.24 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 161.5 MB in the beginning and 175.5 MB in the end (delta: -14.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i