/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 --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 interpolation-heuristic=FIRST --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/s4iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:30:46,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:30:46,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:30:46,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:30:46,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:30:46,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:30:46,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:30:46,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:30:46,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:30:46,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:30:46,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:30:46,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:30:46,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:30:46,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:30:46,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:30:46,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:30:46,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:30:46,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:30:46,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:30:46,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:30:46,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:30:46,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:30:46,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:30:46,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:30:46,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:30:46,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:30:46,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:30:46,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:30:46,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:30:46,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:30:46,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:30:46,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:30:46,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:30:46,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:30:46,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:30:46,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:30:46,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:30:46,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:30:46,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:30:46,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:30:46,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:30:46,536 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 [2020-09-21 11:30:46,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:30:46,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:30:46,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:30:46,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:30:46,580 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:30:46,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:30:46,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:30:46,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:30:46,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:30:46,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:30:46,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:30:46,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:30:46,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:30:46,583 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:30:46,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:30:46,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:30:46,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:30:46,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:30:46,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:30:46,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:30:46,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:30:46,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:30:46,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:30:46,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:30:46,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:30:46,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:30:46,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:30:46,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:30:46,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:30:46,586 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:30:47,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:30:47,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:30:47,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:30:47,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:30:47,094 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:30:47,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4iff.c [2020-09-21 11:30:47,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/712c76ff8/39f8a8ecafc64e9991e9eca86b3be788/FLAGa91bd1440 [2020-09-21 11:30:47,662 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:30:47,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4iff.c [2020-09-21 11:30:47,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/712c76ff8/39f8a8ecafc64e9991e9eca86b3be788/FLAGa91bd1440 [2020-09-21 11:30:48,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/712c76ff8/39f8a8ecafc64e9991e9eca86b3be788 [2020-09-21 11:30:48,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:30:48,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:30:48,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:30:48,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:30:48,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:30:48,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:30:48" (1/1) ... [2020-09-21 11:30:48,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee0b9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48, skipping insertion in model container [2020-09-21 11:30:48,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:30:48" (1/1) ... [2020-09-21 11:30:48,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:30:48,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:30:48,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:30:48,416 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:30:48,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:30:48,554 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:30:48,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48 WrapperNode [2020-09-21 11:30:48,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:30:48,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:30:48,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:30:48,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:30:48,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48" (1/1) ... [2020-09-21 11:30:48,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48" (1/1) ... [2020-09-21 11:30:48,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48" (1/1) ... [2020-09-21 11:30:48,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48" (1/1) ... [2020-09-21 11:30:48,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48" (1/1) ... [2020-09-21 11:30:48,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48" (1/1) ... [2020-09-21 11:30:48,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48" (1/1) ... [2020-09-21 11:30:48,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:30:48,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:30:48,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:30:48,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:30:48,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48" (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 [2020-09-21 11:30:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:30:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:30:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:30:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:30:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:30:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:30:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:30:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:30:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:30:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:30:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:30:48,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:30:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:30:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:30:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:30:48,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:30:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:30:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:30:48,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:30:49,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:30:49,030 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 11:30:49,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:30:49 BoogieIcfgContainer [2020-09-21 11:30:49,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:30:49,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:30:49,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:30:49,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:30:49,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:30:48" (1/3) ... [2020-09-21 11:30:49,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6bc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:30:49, skipping insertion in model container [2020-09-21 11:30:49,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:48" (2/3) ... [2020-09-21 11:30:49,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6bc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:30:49, skipping insertion in model container [2020-09-21 11:30:49,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:30:49" (3/3) ... [2020-09-21 11:30:49,044 INFO L109 eAbstractionObserver]: Analyzing ICFG s4iff.c [2020-09-21 11:30:49,055 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:30:49,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:30:49,086 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:30:49,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:30:49,111 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:30:49,111 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:30:49,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:30:49,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:30:49,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:30:49,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:30:49,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:30:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-09-21 11:30:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:30:49,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:49,143 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] [2020-09-21 11:30:49,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:49,151 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-09-21 11:30:49,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:49,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856398825] [2020-09-21 11:30:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:49,317 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:49,318 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:49,318 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:49,318 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:49,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:30:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:30:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:30:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:49,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:49,404 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:49,405 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:49,405 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:49,406 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:49,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:49,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:30:49,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:49,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:30:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:49,421 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:49,421 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:49,421 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:49,422 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:49,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:49,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:30:49,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:30:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:30:49,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856398825] [2020-09-21 11:30:49,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:30:49,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:30:49,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470387222] [2020-09-21 11:30:49,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:30:49,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:49,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:30:49,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:30:49,464 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-09-21 11:30:49,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:49,573 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-09-21 11:30:49,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:30:49,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 11:30:49,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:49,590 INFO L225 Difference]: With dead ends: 54 [2020-09-21 11:30:49,591 INFO L226 Difference]: Without dead ends: 25 [2020-09-21 11:30:49,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:30:49,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-21 11:30:49,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-21 11:30:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-21 11:30:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-21 11:30:49,650 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-09-21 11:30:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:49,650 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-21 11:30:49,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:30:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-21 11:30:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:30:49,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:49,652 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] [2020-09-21 11:30:49,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:30:49,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:49,653 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-09-21 11:30:49,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:49,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670982483] [2020-09-21 11:30:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:49,723 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:49,723 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:49,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:49,724 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:49,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:30:49,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:49,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:30:49,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:49,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:30:49,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:30:49,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:30:49,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:49,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:49,807 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:49,807 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:49,807 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:49,808 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:49,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:49,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:49,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:30:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:49,820 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:49,821 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:49,821 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:49,821 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:49,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:30:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:30:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:30:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:30:49,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670982483] [2020-09-21 11:30:49,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:30:49,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:30:49,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091406771] [2020-09-21 11:30:49,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:30:49,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:49,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:30:49,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:30:49,834 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-09-21 11:30:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:49,946 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-09-21 11:30:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:30:49,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-21 11:30:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:49,948 INFO L225 Difference]: With dead ends: 40 [2020-09-21 11:30:49,948 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 11:30:49,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:30:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 11:30:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-09-21 11:30:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 11:30:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-09-21 11:30:49,958 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-09-21 11:30:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:49,959 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-09-21 11:30:49,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:30:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-09-21 11:30:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:30:49,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:49,960 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] [2020-09-21 11:30:49,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:30:49,961 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:49,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:49,961 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-09-21 11:30:49,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:49,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953461514] [2020-09-21 11:30:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:50,220 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:30:50,220 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -8 [2020-09-21 11:30:50,221 FATAL L256 erpolLogProxyWrapper]: Difference in width: 8 [2020-09-21 11:30:50,221 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:50,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 11:30:50,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-21 11:30:50,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:30:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 11:30:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:30:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:50,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:50,503 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:50,503 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:50,503 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:50,504 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:50,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:50,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:50,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:30:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:50,511 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:50,511 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:50,511 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:50,512 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:50,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:50,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:50,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:30:50,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953461514] [2020-09-21 11:30:50,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:30:50,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:30:50,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242344920] [2020-09-21 11:30:50,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:30:50,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:50,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:30:50,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:30:50,522 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-09-21 11:30:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:50,956 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-09-21 11:30:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:30:50,956 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-09-21 11:30:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:50,959 INFO L225 Difference]: With dead ends: 41 [2020-09-21 11:30:50,959 INFO L226 Difference]: Without dead ends: 35 [2020-09-21 11:30:50,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:30:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-21 11:30:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-09-21 11:30:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 11:30:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-21 11:30:50,969 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-09-21 11:30:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:50,970 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-21 11:30:50,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:30:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-21 11:30:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:30:50,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:50,971 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] [2020-09-21 11:30:50,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:30:50,972 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:50,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-09-21 11:30:50,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:50,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448821049] [2020-09-21 11:30:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:50,994 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 11:30:50,994 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 11:30:50,994 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:30:51,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:30:51,040 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 11:30:51,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:30:51 BoogieIcfgContainer [2020-09-21 11:30:51,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:30:51,050 INFO L168 Benchmark]: Toolchain (without parser) took 2984.68 ms. Allocated memory was 146.3 MB in the beginning and 235.9 MB in the end (delta: 89.7 MB). Free memory was 102.5 MB in the beginning and 124.5 MB in the end (delta: -22.0 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:51,053 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:30:51,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.16 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 181.6 MB in the end (delta: -79.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:51,055 INFO L168 Benchmark]: Boogie Preprocessor took 47.85 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:51,056 INFO L168 Benchmark]: RCFGBuilder took 430.47 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 161.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:51,061 INFO L168 Benchmark]: TraceAbstraction took 2004.99 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 161.6 MB in the beginning and 124.5 MB in the end (delta: 37.1 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:51,065 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 488.16 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 102.0 MB in the beginning and 181.6 MB in the end (delta: -79.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.85 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 179.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.47 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 161.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2004.99 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 161.6 MB in the beginning and 124.5 MB in the end (delta: 37.1 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i