/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:54:31,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:54:31,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:54:31,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:54:31,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:54:31,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:54:31,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:54:32,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:54:32,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:54:32,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:54:32,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:54:32,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:54:32,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:54:32,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:54:32,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:54:32,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:54:32,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:54:32,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:54:32,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:54:32,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:54:32,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:54:32,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:54:32,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:54:32,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:54:32,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:54:32,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:54:32,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:54:32,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:54:32,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:54:32,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:54:32,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:54:32,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:54:32,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:54:32,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:54:32,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:54:32,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:54:32,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:54:32,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:54:32,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:54:32,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:54:32,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:54:32,084 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 22:54:32,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:54:32,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:54:32,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:54:32,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:54:32,123 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:54:32,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:54:32,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:54:32,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:54:32,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:54:32,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:54:32,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:54:32,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:54:32,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:54:32,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:54:32,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:54:32,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:54:32,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:54:32,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:54:32,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:54:32,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:54:32,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:54:32,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:32,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:54:32,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:54:32,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:54:32,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:54:32,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:54:32,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:54:32,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:54:32,128 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:54:32,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:54:32,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:54:32,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:54:32,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:54:32,631 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:54:32,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-09-24 22:54:32,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb3a5a1c0/7d638bd46bc24e8e9108b20d3dbdc451/FLAG95508855b [2020-09-24 22:54:33,316 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:54:33,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condaf.c [2020-09-24 22:54:33,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb3a5a1c0/7d638bd46bc24e8e9108b20d3dbdc451/FLAG95508855b [2020-09-24 22:54:33,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb3a5a1c0/7d638bd46bc24e8e9108b20d3dbdc451 [2020-09-24 22:54:33,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:54:33,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:54:33,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:33,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:54:33,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:54:33,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:33" (1/1) ... [2020-09-24 22:54:33,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d5df5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:33, skipping insertion in model container [2020-09-24 22:54:33,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:33" (1/1) ... [2020-09-24 22:54:33,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:54:33,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:54:33,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:33,965 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:54:33,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:34,011 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:54:34,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34 WrapperNode [2020-09-24 22:54:34,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:34,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:54:34,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:54:34,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:54:34,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34" (1/1) ... [2020-09-24 22:54:34,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34" (1/1) ... [2020-09-24 22:54:34,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34" (1/1) ... [2020-09-24 22:54:34,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34" (1/1) ... [2020-09-24 22:54:34,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34" (1/1) ... [2020-09-24 22:54:34,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34" (1/1) ... [2020-09-24 22:54:34,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34" (1/1) ... [2020-09-24 22:54:34,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:54:34,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:54:34,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:54:34,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:54:34,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34" (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 22:54:34,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:54:34,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:54:34,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:54:34,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:54:34,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:54:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:54:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:54:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:54:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:54:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:54:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:54:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:54:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:54:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:54:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:54:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:54:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:54:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:54:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:54:34,598 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:54:34,598 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 22:54:34,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:34 BoogieIcfgContainer [2020-09-24 22:54:34,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:54:34,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:54:34,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:54:34,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:54:34,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:54:33" (1/3) ... [2020-09-24 22:54:34,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd1347b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:34, skipping insertion in model container [2020-09-24 22:54:34,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:34" (2/3) ... [2020-09-24 22:54:34,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd1347b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:34, skipping insertion in model container [2020-09-24 22:54:34,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:34" (3/3) ... [2020-09-24 22:54:34,614 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-09-24 22:54:34,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:54:34,642 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:54:34,663 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:54:34,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:54:34,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:54:34,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:54:34,693 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:54:34,693 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:54:34,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:54:34,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:54:34,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:54:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-24 22:54:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:54:34,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:34,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:34,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:34,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:34,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2050446892, now seen corresponding path program 1 times [2020-09-24 22:54:34,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:34,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598607119] [2020-09-24 22:54:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:35,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 22:54:35,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:54:35,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-24 22:54:35,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 22:54:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:35,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:54:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:35,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:54:35,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:35,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:35,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:35,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:54:35,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:35,392 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 22:54:35,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598607119] [2020-09-24 22:54:35,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:35,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:54:35,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330347047] [2020-09-24 22:54:35,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:54:35,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:35,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:54:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:54:35,426 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2020-09-24 22:54:35,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:35,652 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2020-09-24 22:54:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:54:35,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-24 22:54:35,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:35,669 INFO L225 Difference]: With dead ends: 125 [2020-09-24 22:54:35,670 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 22:54:35,676 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 22:54:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 22:54:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-24 22:54:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 22:54:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-24 22:54:35,754 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-09-24 22:54:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:35,757 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-24 22:54:35,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:54:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-24 22:54:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:54:35,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:35,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:35,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:54:35,762 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:35,763 INFO L82 PathProgramCache]: Analyzing trace with hash -341126016, now seen corresponding path program 1 times [2020-09-24 22:54:35,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:35,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994890533] [2020-09-24 22:54:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:35,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:36,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:36,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 22:54:36,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:54:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-09-24 22:54:36,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:36,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:54:36,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:54:36,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 22:54:36,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:36,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:36,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:36,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:54:36,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:36,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:36,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:36,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:36,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:36,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 22:54:36,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:54:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:54:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:36,593 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 22:54:36,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994890533] [2020-09-24 22:54:36,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:36,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:54:36,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234203461] [2020-09-24 22:54:36,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:54:36,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:36,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:54:36,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:54:36,599 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 5 states. [2020-09-24 22:54:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:36,872 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-09-24 22:54:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:54:36,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-24 22:54:36,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:36,875 INFO L225 Difference]: With dead ends: 93 [2020-09-24 22:54:36,875 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 22:54:36,877 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 22:54:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 22:54:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 22:54:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 22:54:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-09-24 22:54:36,900 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 33 [2020-09-24 22:54:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:36,901 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-09-24 22:54:36,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:54:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-09-24 22:54:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 22:54:36,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:36,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:36,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:54:36,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:36,907 INFO L82 PathProgramCache]: Analyzing trace with hash 746418975, now seen corresponding path program 1 times [2020-09-24 22:54:36,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:36,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910430199] [2020-09-24 22:54:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:41,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:41,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:41,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:41,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:54:41,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 22:54:41,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 22:54:41,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:54:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:54:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 22:54:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:42,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:42,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:42,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:42,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:54:42,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:42,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:42,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:42,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:42,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:42,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:42,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:54:42,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:42,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:54:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:54:42,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910430199] [2020-09-24 22:54:42,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:54:42,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:54:42,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394810208] [2020-09-24 22:54:42,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:54:42,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:42,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:54:42,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:54:42,242 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 12 states. [2020-09-24 22:54:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:42,945 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-09-24 22:54:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:54:42,945 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-24 22:54:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:42,947 INFO L225 Difference]: With dead ends: 92 [2020-09-24 22:54:42,947 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 22:54:42,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:54:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 22:54:42,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2020-09-24 22:54:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 22:54:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-09-24 22:54:42,964 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 57 [2020-09-24 22:54:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:42,965 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-09-24 22:54:42,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:54:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-09-24 22:54:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 22:54:42,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:42,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:54:42,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:54:42,967 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1569346213, now seen corresponding path program 1 times [2020-09-24 22:54:42,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:42,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602108182] [2020-09-24 22:54:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:54:42,995 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:54:42,996 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:54:43,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:54:43,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:54:43 BoogieIcfgContainer [2020-09-24 22:54:43,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:54:43,029 INFO L168 Benchmark]: Toolchain (without parser) took 9390.28 ms. Allocated memory was 142.6 MB in the beginning and 282.1 MB in the end (delta: 139.5 MB). Free memory was 102.2 MB in the beginning and 222.3 MB in the end (delta: -120.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:43,030 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 142.6 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 22:54:43,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.70 ms. Allocated memory is still 142.6 MB. Free memory was 101.5 MB in the beginning and 90.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:43,032 INFO L168 Benchmark]: Boogie Preprocessor took 144.38 ms. Allocated memory was 142.6 MB in the beginning and 202.4 MB in the end (delta: 59.8 MB). Free memory was 90.6 MB in the beginning and 179.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:43,033 INFO L168 Benchmark]: RCFGBuilder took 447.33 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 159.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:43,034 INFO L168 Benchmark]: TraceAbstraction took 8419.90 ms. Allocated memory was 202.4 MB in the beginning and 282.1 MB in the end (delta: 79.7 MB). Free memory was 159.1 MB in the beginning and 222.3 MB in the end (delta: -63.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:43,040 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 142.6 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.70 ms. Allocated memory is still 142.6 MB. Free memory was 101.5 MB in the beginning and 90.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.38 ms. Allocated memory was 142.6 MB in the beginning and 202.4 MB in the end (delta: 59.8 MB). Free memory was 90.6 MB in the beginning and 179.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.33 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 159.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8419.90 ms. Allocated memory was 202.4 MB in the beginning and 282.1 MB in the end (delta: 79.7 MB). Free memory was 159.1 MB in the beginning and 222.3 MB in the end (delta: -63.2 MB). Peak memory consumption was 16.5 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 sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i