/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:06:18,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:06:18,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:06:18,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:06:18,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:06:18,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:06:18,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:06:18,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:06:18,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:06:18,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:06:18,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:06:18,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:06:18,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:06:18,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:06:18,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:06:18,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:06:18,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:06:18,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:06:18,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:06:18,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:06:18,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:06:18,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:06:18,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:06:18,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:06:18,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:06:18,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:06:18,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:06:18,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:06:18,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:06:18,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:06:18,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:06:18,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:06:18,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:06:18,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:06:18,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:06:18,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:06:18,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:06:18,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:06:18,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:06:18,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:06:18,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:06:18,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 05:06:18,319 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:06:18,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:06:18,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:06:18,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:06:18,321 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:06:18,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:06:18,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:06:18,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:06:18,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:06:18,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:06:18,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:06:18,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:06:18,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:06:18,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:06:18,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:06:18,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:06:18,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:06:18,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:06:18,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:06:18,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:06:18,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:06:18,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:06:18,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:06:18,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:06:18,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:06:18,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:06:18,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:06:18,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:06:18,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:06:18,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:06:18,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:06:18,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:06:18,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:06:18,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:06:18,684 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:06:18,685 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-10-13 05:06:18,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af72ec359/41ebbe115c0c44eba6fc74963ddd1d26/FLAG60af0666b [2020-10-13 05:06:19,190 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:06:19,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condgf.c [2020-10-13 05:06:19,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af72ec359/41ebbe115c0c44eba6fc74963ddd1d26/FLAG60af0666b [2020-10-13 05:06:19,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af72ec359/41ebbe115c0c44eba6fc74963ddd1d26 [2020-10-13 05:06:19,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:06:19,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:06:19,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:06:19,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:06:19,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:06:19,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:06:19" (1/1) ... [2020-10-13 05:06:19,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2018f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19, skipping insertion in model container [2020-10-13 05:06:19,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:06:19" (1/1) ... [2020-10-13 05:06:19,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:06:19,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:06:19,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:06:19,869 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:06:19,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:06:19,910 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:06:19,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19 WrapperNode [2020-10-13 05:06:19,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:06:19,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:06:19,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:06:19,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:06:19,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19" (1/1) ... [2020-10-13 05:06:19,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19" (1/1) ... [2020-10-13 05:06:20,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19" (1/1) ... [2020-10-13 05:06:20,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19" (1/1) ... [2020-10-13 05:06:20,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19" (1/1) ... [2020-10-13 05:06:20,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19" (1/1) ... [2020-10-13 05:06:20,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19" (1/1) ... [2020-10-13 05:06:20,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:06:20,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:06:20,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:06:20,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:06:20,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:06:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:06:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:06:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 05:06:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:06:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:06:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:06:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:06:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 05:06:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:06:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:06:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 05:06:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:06:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 05:06:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 05:06:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 05:06:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 05:06:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 05:06:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:06:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:06:20,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:06:20,475 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 05:06:20,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:06:20 BoogieIcfgContainer [2020-10-13 05:06:20,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:06:20,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:06:20,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:06:20,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:06:20,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:06:19" (1/3) ... [2020-10-13 05:06:20,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776a114c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:06:20, skipping insertion in model container [2020-10-13 05:06:20,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:06:19" (2/3) ... [2020-10-13 05:06:20,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776a114c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:06:20, skipping insertion in model container [2020-10-13 05:06:20,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:06:20" (3/3) ... [2020-10-13 05:06:20,488 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-10-13 05:06:20,499 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:06:20,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:06:20,521 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:06:20,545 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:06:20,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:06:20,545 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:06:20,546 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:06:20,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:06:20,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:06:20,546 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:06:20,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:06:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-13 05:06:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 05:06:20,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:06:20,575 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] [2020-10-13 05:06:20,576 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:06:20,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:06:20,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1314310818, now seen corresponding path program 1 times [2020-10-13 05:06:20,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:06:20,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661067412] [2020-10-13 05:06:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:06:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:06:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:20,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:21,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:06:21,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 05:06:21,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 05:06:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-10-13 05:06:21,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:06:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:06:21,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 05:06:21,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:06:21,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 05:06:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:06:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:06:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:21,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:06:21,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:06:21,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:06:21,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:06:21,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:06:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:06:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:06:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:06:21,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:06:21,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:06:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:06:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:21,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:06:21,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:06:21,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:06:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:06:21,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:06:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:06:21,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 05:06:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:06:21,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:06:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:06:21,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661067412] [2020-10-13 05:06:21,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:06:21,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:06:21,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570614767] [2020-10-13 05:06:21,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:06:21,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:06:21,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:06:21,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:06:21,939 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-13 05:06:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:06:22,121 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2020-10-13 05:06:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:06:22,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-13 05:06:22,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:06:22,137 INFO L225 Difference]: With dead ends: 66 [2020-10-13 05:06:22,137 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 05:06:22,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:06:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 05:06:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-13 05:06:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 05:06:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 05:06:22,212 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-13 05:06:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:06:22,214 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 05:06:22,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:06:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 05:06:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 05:06:22,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:06:22,217 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] [2020-10-13 05:06:22,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:06:22,218 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:06:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:06:22,223 INFO L82 PathProgramCache]: Analyzing trace with hash 34447140, now seen corresponding path program 1 times [2020-10-13 05:06:22,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:06:22,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415658627] [2020-10-13 05:06:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:06:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:06:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:22,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:22,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:22,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:06:22,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 05:06:22,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 05:06:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-13 05:06:22,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:06:22,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:06:22,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:06:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:06:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 05:06:23,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:06:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:06:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:23,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:06:23,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:06:23,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:06:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:06:23,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:06:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:06:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:06:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:06:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:06:23,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:06:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:06:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:06:23,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:06:23,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:06:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:06:23,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:06:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:06:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:06:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:06:23,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:06:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:06:23,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415658627] [2020-10-13 05:06:23,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:06:23,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:06:23,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132900857] [2020-10-13 05:06:23,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:06:23,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:06:23,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:06:23,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:06:23,036 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-10-13 05:06:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:06:23,308 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-10-13 05:06:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:06:23,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-13 05:06:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:06:23,314 INFO L225 Difference]: With dead ends: 67 [2020-10-13 05:06:23,314 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 05:06:23,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:06:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 05:06:23,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2020-10-13 05:06:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 05:06:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-13 05:06:23,329 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2020-10-13 05:06:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:06:23,329 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-13 05:06:23,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:06:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-13 05:06:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:06:23,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:06:23,331 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] [2020-10-13 05:06:23,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:06:23,331 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:06:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:06:23,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1408881596, now seen corresponding path program 1 times [2020-10-13 05:06:23,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:06:23,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538781739] [2020-10-13 05:06:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:06:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:06:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:23,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:25,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:06:25,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:06:25,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:06:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2036 [2020-10-13 05:06:25,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:06:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:06:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 05:06:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:06:25,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:06:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:06:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:06:25,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:25,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:06:25,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:06:25,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:06:25,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:06:25,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:06:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:06:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:06:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:06:25,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:06:25,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:06:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:06:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:06:25,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:06:25,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:06:25,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:06:25,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:06:25,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:06:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:06:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:06:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:06:25,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:06:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:06:25,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538781739] [2020-10-13 05:06:25,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:06:25,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:06:25,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733067272] [2020-10-13 05:06:25,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:06:25,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:06:25,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:06:25,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:06:25,709 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2020-10-13 05:06:26,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:06:26,250 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-10-13 05:06:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:06:26,251 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-13 05:06:26,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:06:26,253 INFO L225 Difference]: With dead ends: 59 [2020-10-13 05:06:26,253 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 05:06:26,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:06:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 05:06:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-13 05:06:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 05:06:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-13 05:06:26,262 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 31 [2020-10-13 05:06:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:06:26,263 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-13 05:06:26,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:06:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-13 05:06:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:06:26,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:06:26,265 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] [2020-10-13 05:06:26,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:06:26,266 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:06:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:06:26,266 INFO L82 PathProgramCache]: Analyzing trace with hash -728823226, now seen corresponding path program 1 times [2020-10-13 05:06:26,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:06:26,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112889451] [2020-10-13 05:06:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:06:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 05:06:26,286 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 05:06:26,287 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:06:26,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:06:26,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:06:26 BoogieIcfgContainer [2020-10-13 05:06:26,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:06:26,320 INFO L168 Benchmark]: Toolchain (without parser) took 6718.26 ms. Allocated memory was 138.9 MB in the beginning and 291.0 MB in the end (delta: 152.0 MB). Free memory was 102.2 MB in the beginning and 228.5 MB in the end (delta: -126.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-10-13 05:06:26,321 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 05:06:26,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.83 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-13 05:06:26,324 INFO L168 Benchmark]: Boogie Preprocessor took 147.00 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 178.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-13 05:06:26,324 INFO L168 Benchmark]: RCFGBuilder took 421.48 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 159.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-10-13 05:06:26,325 INFO L168 Benchmark]: TraceAbstraction took 5835.55 ms. Allocated memory was 201.3 MB in the beginning and 291.0 MB in the end (delta: 89.7 MB). Free memory was 159.7 MB in the beginning and 228.5 MB in the end (delta: -68.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-10-13 05:06:26,330 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.83 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.00 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 178.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.48 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 159.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5835.55 ms. Allocated memory was 201.3 MB in the beginning and 291.0 MB in the end (delta: 89.7 MB). Free memory was 159.7 MB in the beginning and 228.5 MB in the end (delta: -68.8 MB). Peak memory consumption was 20.8 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] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i