/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=SMALLEST --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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:28:23,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:28:23,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:28:23,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:28:23,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:28:23,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:28:23,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:28:23,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:28:23,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:28:23,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:28:23,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:28:23,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:28:23,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:28:23,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:28:23,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:28:23,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:28:23,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:28:23,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:28:23,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:28:23,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:28:23,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:28:23,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:28:23,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:28:23,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:28:23,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:28:23,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:28:23,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:28:23,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:28:23,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:28:23,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:28:23,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:28:23,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:28:23,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:28:23,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:28:23,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:28:23,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:28:23,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:28:23,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:28:23,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:28:23,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:28:23,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:28:23,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:28:23,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:28:23,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:28:23,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:28:23,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:28:23,560 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:28:23,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:28:23,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:28:23,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:28:23,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:28:23,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:28:23,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:28:23,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:28:23,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:28:23,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:28:23,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:28:23,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:28:23,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:28:23,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:28:23,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:28:23,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:28:23,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:28:23,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:28:23,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:28:23,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:28:23,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:28:23,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:28:23,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:28:23,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:28:23,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:28:23,566 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:28:24,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:28:24,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:28:24,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:28:24,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:28:24,067 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:28:24,068 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-09-24 18:28:24,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ff007ec5/4f5e906216d2482f91467f0c805cce24/FLAG556ed5161 [2020-09-24 18:28:24,672 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:28:24,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condnf.c [2020-09-24 18:28:24,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ff007ec5/4f5e906216d2482f91467f0c805cce24/FLAG556ed5161 [2020-09-24 18:28:25,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ff007ec5/4f5e906216d2482f91467f0c805cce24 [2020-09-24 18:28:25,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:28:25,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:28:25,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:25,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:28:25,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:28:25,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:25" (1/1) ... [2020-09-24 18:28:25,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ad355a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25, skipping insertion in model container [2020-09-24 18:28:25,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:25" (1/1) ... [2020-09-24 18:28:25,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:28:25,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:28:25,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:25,389 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:28:25,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:25,430 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:28:25,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25 WrapperNode [2020-09-24 18:28:25,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:25,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:28:25,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:28:25,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:28:25,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25" (1/1) ... [2020-09-24 18:28:25,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25" (1/1) ... [2020-09-24 18:28:25,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25" (1/1) ... [2020-09-24 18:28:25,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25" (1/1) ... [2020-09-24 18:28:25,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25" (1/1) ... [2020-09-24 18:28:25,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25" (1/1) ... [2020-09-24 18:28:25,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25" (1/1) ... [2020-09-24 18:28:25,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:28:25,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:28:25,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:28:25,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:28:25,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:28:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:28:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:28:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:28:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:28:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:28:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:28:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:28:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:28:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:28:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:28:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:28:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:28:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:28:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:28:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:28:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:28:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:28:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:28:26,016 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:28:26,017 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 18:28:26,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:26 BoogieIcfgContainer [2020-09-24 18:28:26,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:28:26,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:28:26,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:28:26,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:28:26,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:28:25" (1/3) ... [2020-09-24 18:28:26,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c50e742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:26, skipping insertion in model container [2020-09-24 18:28:26,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:25" (2/3) ... [2020-09-24 18:28:26,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c50e742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:26, skipping insertion in model container [2020-09-24 18:28:26,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:26" (3/3) ... [2020-09-24 18:28:26,032 INFO L109 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-09-24 18:28:26,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:28:26,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:28:26,078 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:28:26,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:28:26,106 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:28:26,106 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:28:26,106 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:28:26,106 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:28:26,106 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:28:26,107 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:28:26,107 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:28:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-24 18:28:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 18:28:26,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:26,140 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] [2020-09-24 18:28:26,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:26,147 INFO L82 PathProgramCache]: Analyzing trace with hash -386984160, now seen corresponding path program 1 times [2020-09-24 18:28:26,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:26,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925050053] [2020-09-24 18:28:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:26,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 18:28:26,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:28:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-24 18:28:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 18:28:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:28:26,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:26,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:26,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:26,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:26,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:28:26,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:26,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:26,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:26,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:26,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:26,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:26,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:28:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:26,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925050053] [2020-09-24 18:28:26,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:26,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:28:26,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455920177] [2020-09-24 18:28:26,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:28:26,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:26,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:28:26,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:28:26,750 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-09-24 18:28:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:26,962 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2020-09-24 18:28:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:28:26,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 18:28:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:26,976 INFO L225 Difference]: With dead ends: 107 [2020-09-24 18:28:26,977 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 18:28:26,982 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 [2020-09-24 18:28:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 18:28:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 18:28:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 18:28:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 18:28:27,040 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 31 [2020-09-24 18:28:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:27,040 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 18:28:27,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:28:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 18:28:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 18:28:27,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:27,043 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] [2020-09-24 18:28:27,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:28:27,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:27,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1278196063, now seen corresponding path program 1 times [2020-09-24 18:28:27,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:27,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268582659] [2020-09-24 18:28:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 18:28:27,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:28:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-09-24 18:28:27,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:28:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:28:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:28:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:27,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:27,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:27,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:28:27,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:27,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:27,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:28:27,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:27,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:27,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:27,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:27,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:28:27,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:28:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:28:27,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:27,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268582659] [2020-09-24 18:28:27,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:27,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:28:27,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329496146] [2020-09-24 18:28:27,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:28:27,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:27,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:28:27,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:28:27,995 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 5 states. [2020-09-24 18:28:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:28,247 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2020-09-24 18:28:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:28:28,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 18:28:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:28,250 INFO L225 Difference]: With dead ends: 85 [2020-09-24 18:28:28,250 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:28:28,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:28:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:28:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-09-24 18:28:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 18:28:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-24 18:28:28,275 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 31 [2020-09-24 18:28:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:28,275 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-24 18:28:28,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:28:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-24 18:28:28,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 18:28:28,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:28,281 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] [2020-09-24 18:28:28,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:28:28,281 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:28,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:28,282 INFO L82 PathProgramCache]: Analyzing trace with hash -620119431, now seen corresponding path program 1 times [2020-09-24 18:28:28,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:28,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698314019] [2020-09-24 18:28:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:28,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:28,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:30,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:30,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 18:28:30,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:28:30,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-09-24 18:28:30,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:28:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:28:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:28:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:30,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:30,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:28:30,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:28:30,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:30,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:30,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:30,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 18:28:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:30,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:30,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:30,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:28:30,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:28:30,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:28:30,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698314019] [2020-09-24 18:28:30,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:28:30,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:28:30,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497488574] [2020-09-24 18:28:30,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:28:30,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:30,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:28:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:28:30,352 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 9 states. [2020-09-24 18:28:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:30,921 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-24 18:28:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:28:30,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-09-24 18:28:30,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:30,927 INFO L225 Difference]: With dead ends: 113 [2020-09-24 18:28:30,927 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 18:28:30,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:28:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 18:28:30,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2020-09-24 18:28:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 18:28:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-24 18:28:30,949 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 46 [2020-09-24 18:28:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:30,950 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-24 18:28:30,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:28:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-24 18:28:30,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 18:28:30,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:30,952 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] [2020-09-24 18:28:30,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:28:30,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:30,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:30,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1321326334, now seen corresponding path program 1 times [2020-09-24 18:28:30,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:30,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412862768] [2020-09-24 18:28:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:28:30,977 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:28:30,978 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:28:30,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:28:31,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:28:31 BoogieIcfgContainer [2020-09-24 18:28:31,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:28:31,015 INFO L168 Benchmark]: Toolchain (without parser) took 5985.19 ms. Allocated memory was 140.5 MB in the beginning and 244.8 MB in the end (delta: 104.3 MB). Free memory was 102.5 MB in the beginning and 160.9 MB in the end (delta: -58.4 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:31,016 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:28:31,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.82 ms. Allocated memory is still 140.5 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:31,019 INFO L168 Benchmark]: Boogie Preprocessor took 142.66 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 91.7 MB in the beginning and 181.9 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:31,020 INFO L168 Benchmark]: RCFGBuilder took 447.87 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 163.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:31,021 INFO L168 Benchmark]: TraceAbstraction took 4986.91 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 163.0 MB in the beginning and 160.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:31,025 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 397.82 ms. Allocated memory is still 140.5 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.66 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 91.7 MB in the beginning and 181.9 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.87 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 163.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4986.91 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 163.0 MB in the beginning and 160.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] int *a = malloc(sizeof(int)*N); [L28] i=0 [L28] COND TRUE i N [L36] EXPR a[i] [L36] a[i] = a[i] [L33] i++ [L33] COND FALSE !(i