/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:50:01,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:50:01,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:50:01,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:50:01,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:50:01,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:50:01,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:50:01,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:50:01,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:50:01,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:50:01,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:50:01,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:50:01,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:50:01,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:50:01,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:50:01,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:50:01,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:50:01,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:50:01,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:50:01,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:50:01,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:50:01,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:50:01,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:50:01,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:50:01,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:50:01,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:50:01,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:50:01,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:50:01,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:50:01,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:50:01,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:50:01,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:50:01,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:50:01,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:50:01,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:50:01,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:50:01,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:50:01,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:50:01,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:50:01,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:50:01,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:50:01,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:50:01,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:50:01,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:50:01,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:50:01,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:50:01,285 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:50:01,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:50:01,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:50:01,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:50:01,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:50:01,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:50:01,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:50:01,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:50:01,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:50:01,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:50:01,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:50:01,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:50:01,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:50:01,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:50:01,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:50:01,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:50:01,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:50:01,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:50:01,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:50:01,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:50:01,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:50:01,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:50:01,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:50:01,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:50:01,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:50:01,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:50:01,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:50:01,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:50:01,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:50:01,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:50:01,733 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:50:01,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2020-10-29 03:50:01,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58a496100/ead153958d0044f494ef3ed3d5656e39/FLAG99a4857d9 [2020-10-29 03:50:02,514 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:50:02,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs1f.c [2020-10-29 03:50:02,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58a496100/ead153958d0044f494ef3ed3d5656e39/FLAG99a4857d9 [2020-10-29 03:50:02,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58a496100/ead153958d0044f494ef3ed3d5656e39 [2020-10-29 03:50:02,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:50:02,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:50:02,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:02,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:50:02,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:50:02,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:02" (1/1) ... [2020-10-29 03:50:02,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c40ebb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:02, skipping insertion in model container [2020-10-29 03:50:02,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:02" (1/1) ... [2020-10-29 03:50:02,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:50:02,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:50:03,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:03,180 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:50:03,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:03,226 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:50:03,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03 WrapperNode [2020-10-29 03:50:03,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:03,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:50:03,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:50:03,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:50:03,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03" (1/1) ... [2020-10-29 03:50:03,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03" (1/1) ... [2020-10-29 03:50:03,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03" (1/1) ... [2020-10-29 03:50:03,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03" (1/1) ... [2020-10-29 03:50:03,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03" (1/1) ... [2020-10-29 03:50:03,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03" (1/1) ... [2020-10-29 03:50:03,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03" (1/1) ... [2020-10-29 03:50:03,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:50:03,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:50:03,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:50:03,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:50:03,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:50:03,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:50:03,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:50:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:50:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:50:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:50:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:50:03,368 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:50:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:50:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:50:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:50:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:50:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:50:03,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:50:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:50:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:50:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:50:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:50:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:50:03,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:50:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:50:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:50:03,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:50:03,769 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:50:03,770 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:50:03,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:03 BoogieIcfgContainer [2020-10-29 03:50:03,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:50:03,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:50:03,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:50:03,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:50:03,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:50:02" (1/3) ... [2020-10-29 03:50:03,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28afd30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:03, skipping insertion in model container [2020-10-29 03:50:03,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:03" (2/3) ... [2020-10-29 03:50:03,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28afd30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:03, skipping insertion in model container [2020-10-29 03:50:03,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:03" (3/3) ... [2020-10-29 03:50:03,788 INFO L111 eAbstractionObserver]: Analyzing ICFG brs1f.c [2020-10-29 03:50:03,804 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:50:03,809 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:50:03,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:50:03,926 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:50:03,926 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:50:03,926 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:50:03,927 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:50:03,927 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:50:03,927 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:50:03,927 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:50:03,927 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:50:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 03:50:03,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:03,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:03,965 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] [2020-10-29 03:50:03,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:03,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:03,980 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-29 03:50:03,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:03,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053513200] [2020-10-29 03:50:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:04,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:04,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:04,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:04,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:04,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-29 03:50:04,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:04,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:50:04,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:04,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:50:04,811 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-29 03:50:04,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:04,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:04,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:04,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 03:50:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:04,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:50:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:04,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:04,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:04,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:04,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:04,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:50:04,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:04,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:04,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:04,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:04,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:04,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053513200] [2020-10-29 03:50:04,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:04,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:50:04,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224545509] [2020-10-29 03:50:04,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:50:04,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:04,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:50:04,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:50:04,939 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-29 03:50:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:05,119 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-29 03:50:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:50:05,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-29 03:50:05,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:05,130 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:50:05,130 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:50:05,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:50:05,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:50:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-29 03:50:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 03:50:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-29 03:50:05,183 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2020-10-29 03:50:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:05,184 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-29 03:50:05,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:50:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-29 03:50:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:05,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:05,186 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] [2020-10-29 03:50:05,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:50:05,186 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-29 03:50:05,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:05,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756091496] [2020-10-29 03:50:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:05,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:05,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:05,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:05,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 03:50:05,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:05,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:50:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:50:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:50:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:05,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:05,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:05,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:05,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:05,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:50:05,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:05,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:05,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:05,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:05,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:05,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:05,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:50:05,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:05,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:05,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:05,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756091496] [2020-10-29 03:50:05,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:05,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:50:05,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020490964] [2020-10-29 03:50:05,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:50:05,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:05,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:50:05,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:50:05,678 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-10-29 03:50:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:05,912 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-29 03:50:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:50:05,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 03:50:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:05,914 INFO L225 Difference]: With dead ends: 40 [2020-10-29 03:50:05,914 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 03:50:05,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:50:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 03:50:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 03:50:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:50:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-29 03:50:05,926 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-10-29 03:50:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:05,927 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-29 03:50:05,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:50:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-29 03:50:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:05,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:05,928 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] [2020-10-29 03:50:05,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:50:05,929 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:05,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1214934215, now seen corresponding path program 1 times [2020-10-29 03:50:05,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:05,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889707741] [2020-10-29 03:50:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:06,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:06,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:50:06,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:06,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-29 03:50:06,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:06,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:50:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:50:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:07,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:07,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:07,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:50:07,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:07,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:07,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:07,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:07,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:07,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:07,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:07,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:07,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:07,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:07,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889707741] [2020-10-29 03:50:07,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:07,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:50:07,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110598512] [2020-10-29 03:50:07,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:50:07,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:07,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:50:07,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:50:07,109 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 10 states. [2020-10-29 03:50:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:07,729 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-29 03:50:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:50:07,730 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-29 03:50:07,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:07,731 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:50:07,731 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:50:07,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:50:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:50:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2020-10-29 03:50:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:50:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-29 03:50:07,744 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 28 [2020-10-29 03:50:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:07,746 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-29 03:50:07,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:50:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-29 03:50:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:07,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:07,750 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] [2020-10-29 03:50:07,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:50:07,751 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:07,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:07,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-29 03:50:07,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:07,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866307620] [2020-10-29 03:50:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 03:50:07,783 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 03:50:07,783 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 03:50:07,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:50:07,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:50:07 BoogieIcfgContainer [2020-10-29 03:50:07,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 03:50:07,819 INFO L168 Benchmark]: Toolchain (without parser) took 4898.30 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 125.9 MB in the beginning and 149.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:07,822 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.7 MB in the end (delta: 105.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:50:07,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:07,826 INFO L168 Benchmark]: Boogie Preprocessor took 45.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:07,828 INFO L168 Benchmark]: RCFGBuilder took 496.84 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 97.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:07,832 INFO L168 Benchmark]: TraceAbstraction took 4042.26 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 97.4 MB in the beginning and 149.4 MB in the end (delta: -52.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:50:07,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.7 MB in the end (delta: 105.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 298.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.84 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 496.84 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 97.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4042.26 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 97.4 MB in the beginning and 149.4 MB in the end (delta: -52.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i