/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=WIDEST --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/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:25:39,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:25:39,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:25:39,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:25:39,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:25:39,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:25:39,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:25:39,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:25:39,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:25:39,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:25:39,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:25:39,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:25:39,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:25:39,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:25:39,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:25:39,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:25:39,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:25:39,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:25:39,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:25:39,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:25:39,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:25:39,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:25:39,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:25:39,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:25:39,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:25:39,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:25:39,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:25:39,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:25:39,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:25:39,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:25:39,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:25:39,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:25:39,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:25:39,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:25:39,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:25:39,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:25:39,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:25:39,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:25:39,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:25:39,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:25:39,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:25:39,672 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 03:25:39,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:25:39,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:25:39,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:25:39,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:25:39,717 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:25:39,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:25:39,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:25:39,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:25:39,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:25:39,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:25:39,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:25:39,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:25:39,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:25:39,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:25:39,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:25:39,720 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:25:39,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:25:39,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:25:39,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:25:39,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:25:39,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:25:39,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:25:39,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:25:39,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:25:39,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:25:39,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:25:39,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:25:39,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:25:39,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:25:39,726 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:25:40,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:25:40,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:25:40,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:25:40,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:25:40,242 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:25:40,244 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-09-25 03:25:40,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a8283853/de21c306546c4f48b436ac8111142752/FLAG29ee87243 [2020-09-25 03:25:40,838 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:25:40,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condaf.c [2020-09-25 03:25:40,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a8283853/de21c306546c4f48b436ac8111142752/FLAG29ee87243 [2020-09-25 03:25:41,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a8283853/de21c306546c4f48b436ac8111142752 [2020-09-25 03:25:41,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:25:41,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:25:41,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:25:41,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:25:41,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:25:41,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:25:41" (1/1) ... [2020-09-25 03:25:41,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38aadb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41, skipping insertion in model container [2020-09-25 03:25:41,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:25:41" (1/1) ... [2020-09-25 03:25:41,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:25:41,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:25:41,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:25:41,455 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:25:41,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:25:41,497 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:25:41,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41 WrapperNode [2020-09-25 03:25:41,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:25:41,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:25:41,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:25:41,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:25:41,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41" (1/1) ... [2020-09-25 03:25:41,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41" (1/1) ... [2020-09-25 03:25:41,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41" (1/1) ... [2020-09-25 03:25:41,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41" (1/1) ... [2020-09-25 03:25:41,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41" (1/1) ... [2020-09-25 03:25:41,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41" (1/1) ... [2020-09-25 03:25:41,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41" (1/1) ... [2020-09-25 03:25:41,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:25:41,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:25:41,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:25:41,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:25:41,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41" (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 03:25:41,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:25:41,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:25:41,715 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:25:41,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:25:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:25:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:25:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:25:41,716 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:25:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:25:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:25:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:25:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:25:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:25:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:25:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:25:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:25:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:25:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:25:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:25:42,071 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:25:42,071 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 03:25:42,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:25:42 BoogieIcfgContainer [2020-09-25 03:25:42,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:25:42,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:25:42,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:25:42,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:25:42,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:25:41" (1/3) ... [2020-09-25 03:25:42,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e0af63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:25:42, skipping insertion in model container [2020-09-25 03:25:42,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:25:41" (2/3) ... [2020-09-25 03:25:42,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e0af63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:25:42, skipping insertion in model container [2020-09-25 03:25:42,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:25:42" (3/3) ... [2020-09-25 03:25:42,088 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-09-25 03:25:42,099 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:25:42,108 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:25:42,128 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:25:42,159 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:25:42,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:25:42,159 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:25:42,160 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:25:42,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:25:42,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:25:42,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:25:42,160 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:25:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-25 03:25:42,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:25:42,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:42,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:25:42,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:42,196 INFO L82 PathProgramCache]: Analyzing trace with hash -2050446892, now seen corresponding path program 1 times [2020-09-25 03:25:42,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:42,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601790613] [2020-09-25 03:25:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:42,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:42,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:42,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:25:42,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:25:42,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 03:25:42,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 03:25:42,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:42,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:25:42,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:42,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:42,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:25:42,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:42,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:25:42,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:25:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:42,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:42,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:25:42,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:42,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:25:42,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:42,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:42,755 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 03:25:42,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601790613] [2020-09-25 03:25:42,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:25:42,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:25:42,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508586881] [2020-09-25 03:25:42,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:25:42,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:42,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:25:42,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:25:42,788 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2020-09-25 03:25:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:43,006 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2020-09-25 03:25:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:25:43,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-25 03:25:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:43,020 INFO L225 Difference]: With dead ends: 125 [2020-09-25 03:25:43,020 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 03:25:43,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:25:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 03:25:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-25 03:25:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 03:25:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 03:25:43,080 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-09-25 03:25:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:43,080 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 03:25:43,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:25:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 03:25:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:25:43,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:43,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:25:43,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:25:43,083 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:43,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:43,084 INFO L82 PathProgramCache]: Analyzing trace with hash -341126016, now seen corresponding path program 1 times [2020-09-25 03:25:43,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:43,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211174462] [2020-09-25 03:25:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:43,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:43,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:43,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:25:43,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:25:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-09-25 03:25:43,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:25:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:25:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:25:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:43,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:43,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:43,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:25:43,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:25:43,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:25:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:43,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:43,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:43,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:25:43,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:43,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:25:43,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:25:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:25:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:43,861 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 03:25:43,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211174462] [2020-09-25 03:25:43,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:25:43,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:25:43,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850249244] [2020-09-25 03:25:43,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:25:43,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:43,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:25:43,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:25:43,865 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 5 states. [2020-09-25 03:25:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:44,047 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-09-25 03:25:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:25:44,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-25 03:25:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:44,049 INFO L225 Difference]: With dead ends: 93 [2020-09-25 03:25:44,049 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:25:44,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:25:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:25:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-25 03:25:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 03:25:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-09-25 03:25:44,062 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 33 [2020-09-25 03:25:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:44,062 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-09-25 03:25:44,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:25:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-09-25 03:25:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 03:25:44,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:44,065 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, 1, 1, 1, 1, 1, 1] [2020-09-25 03:25:44,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:25:44,065 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:44,066 INFO L82 PathProgramCache]: Analyzing trace with hash 746418975, now seen corresponding path program 1 times [2020-09-25 03:25:44,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:44,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827884039] [2020-09-25 03:25:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:45,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:45,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:46,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:47,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:48,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:48,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:49,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:49,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:25:49,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:25:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:25:49,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 03:25:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:25:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:25:49,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:25:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:50,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:50,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:50,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:25:50,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:50,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:25:50,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:25:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:25:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:25:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:25:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:25:50,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:25:50,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:25:50,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:25:50,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:25:50,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:25:50,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:25:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:25:50,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:25:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:25:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:25:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:25:50,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827884039] [2020-09-25 03:25:50,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:25:50,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 03:25:50,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721905064] [2020-09-25 03:25:50,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 03:25:50,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:25:50,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 03:25:50,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-09-25 03:25:50,339 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 23 states. [2020-09-25 03:25:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:25:52,695 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2020-09-25 03:25:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 03:25:52,696 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-09-25 03:25:52,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:25:52,699 INFO L225 Difference]: With dead ends: 128 [2020-09-25 03:25:52,699 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 03:25:52,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=377, Invalid=1693, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 03:25:52,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 03:25:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 89. [2020-09-25 03:25:52,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 03:25:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2020-09-25 03:25:52,713 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 57 [2020-09-25 03:25:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:25:52,714 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2020-09-25 03:25:52,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 03:25:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2020-09-25 03:25:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 03:25:52,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:25:52,715 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, 1, 1, 1, 1, 1, 1] [2020-09-25 03:25:52,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:25:52,716 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:25:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:25:52,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1569346213, now seen corresponding path program 1 times [2020-09-25 03:25:52,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:25:52,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510755853] [2020-09-25 03:25:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:25:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:25:52,738 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:25:52,738 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:25:52,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:25:52,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:25:52 BoogieIcfgContainer [2020-09-25 03:25:52,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:25:52,770 INFO L168 Benchmark]: Toolchain (without parser) took 11595.87 ms. Allocated memory was 141.6 MB in the beginning and 307.2 MB in the end (delta: 165.7 MB). Free memory was 105.1 MB in the beginning and 212.2 MB in the end (delta: -107.1 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:25:52,771 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:25:52,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.28 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 93.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:25:52,773 INFO L168 Benchmark]: Boogie Preprocessor took 136.33 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 93.9 MB in the beginning and 181.8 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:25:52,773 INFO L168 Benchmark]: RCFGBuilder took 441.95 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 161.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:25:52,775 INFO L168 Benchmark]: TraceAbstraction took 10687.45 ms. Allocated memory was 204.5 MB in the beginning and 307.2 MB in the end (delta: 102.8 MB). Free memory was 161.3 MB in the beginning and 212.2 MB in the end (delta: -50.9 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-09-25 03:25:52,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.28 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 93.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.33 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 93.9 MB in the beginning and 181.8 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.95 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 161.3 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10687.45 ms. Allocated memory was 204.5 MB in the beginning and 307.2 MB in the end (delta: 102.8 MB). Free memory was 161.3 MB in the beginning and 212.2 MB in the end (delta: -50.9 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a 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