/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=NARROWEST --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/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:18:00,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:18:00,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:18:00,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:18:00,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:18:00,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:18:00,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:18:00,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:18:00,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:18:00,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:18:00,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:18:00,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:18:00,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:18:00,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:18:00,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:18:00,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:18:00,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:18:00,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:18:00,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:18:00,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:18:00,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:18:00,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:18:00,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:18:00,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:18:00,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:18:00,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:18:00,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:18:00,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:18:00,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:18:00,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:18:00,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:18:00,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:18:00,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:18:00,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:18:00,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:18:00,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:18:00,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:18:00,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:18:00,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:18:00,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:18:00,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:18:00,518 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 02:18:00,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:18:00,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:18:00,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:18:00,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:18:00,574 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:18:00,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:18:00,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:18:00,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:18:00,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:18:00,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:18:00,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:18:00,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:18:00,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:18:00,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:18:00,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:18:00,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:18:00,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:18:00,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:18:00,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:18:00,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:18:00,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:18:00,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:18:00,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:18:00,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:18:00,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:18:00,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:18:00,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:18:00,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:18:00,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:18:00,579 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:18:01,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:18:01,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:18:01,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:18:01,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:18:01,101 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:18:01,102 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-09-25 02:18:01,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b97d345e0/1dbb0871687943c587bac74fbe420c3f/FLAGbd01dbba8 [2020-09-25 02:18:01,755 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:18:01,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condgf.c [2020-09-25 02:18:01,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b97d345e0/1dbb0871687943c587bac74fbe420c3f/FLAGbd01dbba8 [2020-09-25 02:18:02,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b97d345e0/1dbb0871687943c587bac74fbe420c3f [2020-09-25 02:18:02,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:18:02,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:18:02,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:02,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:18:02,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:18:02,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:02" (1/1) ... [2020-09-25 02:18:02,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54535c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02, skipping insertion in model container [2020-09-25 02:18:02,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:02" (1/1) ... [2020-09-25 02:18:02,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:18:02,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:18:02,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:02,491 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:18:02,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:02,642 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:18:02,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02 WrapperNode [2020-09-25 02:18:02,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:02,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:18:02,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:18:02,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:18:02,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02" (1/1) ... [2020-09-25 02:18:02,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02" (1/1) ... [2020-09-25 02:18:02,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02" (1/1) ... [2020-09-25 02:18:02,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02" (1/1) ... [2020-09-25 02:18:02,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02" (1/1) ... [2020-09-25 02:18:02,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02" (1/1) ... [2020-09-25 02:18:02,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02" (1/1) ... [2020-09-25 02:18:02,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:18:02,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:18:02,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:18:02,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:18:02,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02" (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 02:18:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:18:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:18:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:18:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:18:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:18:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:18:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:18:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:18:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:18:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:18:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:18:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:18:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:18:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:18:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:18:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:18:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:18:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:18:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:18:03,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:18:03,224 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 02:18:03,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:03 BoogieIcfgContainer [2020-09-25 02:18:03,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:18:03,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:18:03,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:18:03,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:18:03,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:18:02" (1/3) ... [2020-09-25 02:18:03,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bbc85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:03, skipping insertion in model container [2020-09-25 02:18:03,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:02" (2/3) ... [2020-09-25 02:18:03,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bbc85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:03, skipping insertion in model container [2020-09-25 02:18:03,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:03" (3/3) ... [2020-09-25 02:18:03,240 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-09-25 02:18:03,252 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:18:03,260 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:18:03,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:18:03,310 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:18:03,310 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:18:03,311 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:18:03,311 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:18:03,311 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:18:03,311 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:18:03,311 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:18:03,311 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:18:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-25 02:18:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:18:03,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:03,344 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] [2020-09-25 02:18:03,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:03,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1924334027, now seen corresponding path program 1 times [2020-09-25 02:18:03,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:03,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051282953] [2020-09-25 02:18:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:04,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:18:04,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:18:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-09-25 02:18:04,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:18:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:18:04,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:04,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:04,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:18:04,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:04,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:04,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:04,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:18:04,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:04,447 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 02:18:04,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051282953] [2020-09-25 02:18:04,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:04,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:18:04,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410649562] [2020-09-25 02:18:04,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:18:04,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:04,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:18:04,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:18:04,487 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-09-25 02:18:04,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:04,755 INFO L93 Difference]: Finished difference Result 135 states and 156 transitions. [2020-09-25 02:18:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:18:04,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-25 02:18:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:04,770 INFO L225 Difference]: With dead ends: 135 [2020-09-25 02:18:04,770 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 02:18:04,774 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 02:18:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 02:18:04,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-09-25 02:18:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 02:18:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-09-25 02:18:04,824 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 35 [2020-09-25 02:18:04,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:04,825 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-09-25 02:18:04,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:18:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-09-25 02:18:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:18:04,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:04,827 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] [2020-09-25 02:18:04,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:04,828 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:04,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:04,829 INFO L82 PathProgramCache]: Analyzing trace with hash -977702175, now seen corresponding path program 1 times [2020-09-25 02:18:04,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:04,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098226713] [2020-09-25 02:18:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:05,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:18:05,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:18:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-09-25 02:18:05,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:18:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 02:18:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:18:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:05,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:05,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:05,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:18:05,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:05,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:05,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:05,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:05,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:18:05,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:05,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:05,793 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 02:18:05,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098226713] [2020-09-25 02:18:05,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:05,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:18:05,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938590392] [2020-09-25 02:18:05,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:18:05,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:05,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:18:05,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:18:05,798 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 6 states. [2020-09-25 02:18:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:06,150 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2020-09-25 02:18:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:18:06,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 02:18:06,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:06,155 INFO L225 Difference]: With dead ends: 142 [2020-09-25 02:18:06,155 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 02:18:06,156 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 [2020-09-25 02:18:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 02:18:06,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 70. [2020-09-25 02:18:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:18:06,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-25 02:18:06,175 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 35 [2020-09-25 02:18:06,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:06,176 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-25 02:18:06,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:18:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-25 02:18:06,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 02:18:06,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:06,179 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, 1, 1] [2020-09-25 02:18:06,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:18:06,179 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:06,180 INFO L82 PathProgramCache]: Analyzing trace with hash -269448694, now seen corresponding path program 1 times [2020-09-25 02:18:06,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:06,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55872336] [2020-09-25 02:18:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:07,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:09,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:10,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:11,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 02:18:11,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:18:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 02:18:11,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:18:11,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 02:18:11,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 02:18:11,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:11,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:11,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:11,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:11,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:18:11,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:11,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:11,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:11,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:11,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:18:11,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:11,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55872336] [2020-09-25 02:18:11,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:11,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:18:11,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908697036] [2020-09-25 02:18:11,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:18:11,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:11,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:18:11,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:18:11,863 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 14 states. [2020-09-25 02:18:12,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:12,625 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-09-25 02:18:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 02:18:12,626 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-09-25 02:18:12,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:12,627 INFO L225 Difference]: With dead ends: 120 [2020-09-25 02:18:12,627 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 02:18:12,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:18:12,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 02:18:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-09-25 02:18:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 02:18:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-09-25 02:18:12,639 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 59 [2020-09-25 02:18:12,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:12,639 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-09-25 02:18:12,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:18:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-09-25 02:18:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 02:18:12,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:12,641 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, 1, 1] [2020-09-25 02:18:12,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:18:12,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:12,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:12,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1693383620, now seen corresponding path program 1 times [2020-09-25 02:18:12,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:12,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53307881] [2020-09-25 02:18:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:18:12,666 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:18:12,666 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:18:12,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:18:12,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:18:12 BoogieIcfgContainer [2020-09-25 02:18:12,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:18:12,698 INFO L168 Benchmark]: Toolchain (without parser) took 10580.47 ms. Allocated memory was 138.9 MB in the beginning and 315.6 MB in the end (delta: 176.7 MB). Free memory was 101.4 MB in the beginning and 243.7 MB in the end (delta: -142.2 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:12,699 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 02:18:12,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.55 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.0 MB in the beginning and 179.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:12,701 INFO L168 Benchmark]: Boogie Preprocessor took 52.60 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 176.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:12,702 INFO L168 Benchmark]: RCFGBuilder took 533.89 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 155.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:12,703 INFO L168 Benchmark]: TraceAbstraction took 9462.93 ms. Allocated memory was 200.8 MB in the beginning and 315.6 MB in the end (delta: 114.8 MB). Free memory was 155.1 MB in the beginning and 243.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:12,707 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 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 520.55 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.0 MB in the beginning and 179.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.60 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 176.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 533.89 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 155.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9462.93 ms. Allocated memory was 200.8 MB in the beginning and 315.6 MB in the end (delta: 114.8 MB). Free memory was 155.1 MB in the beginning and 243.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 26.3 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