/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_3-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:10:34,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:10:34,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:10:34,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:10:34,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:10:34,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:10:34,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:10:34,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:10:34,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:10:34,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:10:34,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:10:34,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:10:34,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:10:34,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:10:34,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:10:34,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:10:34,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:10:34,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:10:34,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:10:34,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:10:34,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:10:34,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:10:34,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:10:34,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:10:34,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:10:34,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:10:34,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:10:34,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:10:34,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:10:34,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:10:34,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:10:34,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:10:34,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:10:34,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:10:34,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:10:34,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:10:34,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:10:34,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:10:34,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:10:34,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:10:34,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:10:34,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:10:34,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:10:34,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:10:34,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:10:34,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:10:34,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:10:34,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:10:34,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:10:34,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:10:34,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:10:34,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:10:34,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:10:34,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:10:34,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:10:34,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:10:34,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:10:34,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:10:34,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:10:34,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:10:34,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:10:34,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:10:34,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:10:34,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:10:34,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:10:34,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:10:34,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:10:34,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:10:34,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:10:34,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:10:34,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:10:34,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:10:35,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:10:35,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:10:35,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:10:35,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:10:35,154 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:10:35,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-1.i [2020-09-25 09:10:35,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d20e7efb4/36520f0780544ae2a58f735ee713c0c1/FLAGd61eac9b5 [2020-09-25 09:10:35,807 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:10:35,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/array_3-1.i [2020-09-25 09:10:35,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d20e7efb4/36520f0780544ae2a58f735ee713c0c1/FLAGd61eac9b5 [2020-09-25 09:10:36,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d20e7efb4/36520f0780544ae2a58f735ee713c0c1 [2020-09-25 09:10:36,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:10:36,169 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:10:36,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:36,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:10:36,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:10:36,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:36" (1/1) ... [2020-09-25 09:10:36,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a5289c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36, skipping insertion in model container [2020-09-25 09:10:36,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:36" (1/1) ... [2020-09-25 09:10:36,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:10:36,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:10:36,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:36,452 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:10:36,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:36,497 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:10:36,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36 WrapperNode [2020-09-25 09:10:36,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:36,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:10:36,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:10:36,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:10:36,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36" (1/1) ... [2020-09-25 09:10:36,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36" (1/1) ... [2020-09-25 09:10:36,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36" (1/1) ... [2020-09-25 09:10:36,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36" (1/1) ... [2020-09-25 09:10:36,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36" (1/1) ... [2020-09-25 09:10:36,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36" (1/1) ... [2020-09-25 09:10:36,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36" (1/1) ... [2020-09-25 09:10:36,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:10:36,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:10:36,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:10:36,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:10:36,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:10:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:10:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:10:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:10:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:10:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:10:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:10:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:10:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:10:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 09:10:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 09:10:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 09:10:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 09:10:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:10:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:10:37,002 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:10:37,002 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 09:10:37,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:37 BoogieIcfgContainer [2020-09-25 09:10:37,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:10:37,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:10:37,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:10:37,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:10:37,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:10:36" (1/3) ... [2020-09-25 09:10:37,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5bfdc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:37, skipping insertion in model container [2020-09-25 09:10:37,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:36" (2/3) ... [2020-09-25 09:10:37,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5bfdc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:37, skipping insertion in model container [2020-09-25 09:10:37,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:37" (3/3) ... [2020-09-25 09:10:37,032 INFO L109 eAbstractionObserver]: Analyzing ICFG array_3-1.i [2020-09-25 09:10:37,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:10:37,049 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:10:37,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:10:37,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:10:37,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:10:37,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:10:37,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:10:37,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:10:37,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:10:37,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:10:37,098 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:10:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-09-25 09:10:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 09:10:37,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:37,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:37,128 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:37,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:37,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2145994368, now seen corresponding path program 1 times [2020-09-25 09:10:37,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:37,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154855621] [2020-09-25 09:10:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:37,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:37,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:37,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:10:37,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:10:37,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-25 09:10:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:37,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:10:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:37,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 09:10:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:37,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:37,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:37,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:10:37,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:37,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:37,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:37,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:37,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154855621] [2020-09-25 09:10:37,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:37,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 09:10:37,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311781021] [2020-09-25 09:10:37,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 09:10:37,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:37,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 09:10:37,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 09:10:37,745 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-09-25 09:10:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:37,872 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-09-25 09:10:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 09:10:37,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-25 09:10:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:37,886 INFO L225 Difference]: With dead ends: 61 [2020-09-25 09:10:37,886 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 09:10:37,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 09:10:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 09:10:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 09:10:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 09:10:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-09-25 09:10:37,936 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2020-09-25 09:10:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:37,936 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-09-25 09:10:37,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 09:10:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-09-25 09:10:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 09:10:37,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:37,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:37,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:10:37,939 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:37,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:37,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2141881988, now seen corresponding path program 1 times [2020-09-25 09:10:37,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:37,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796864110] [2020-09-25 09:10:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:38,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 09:10:38,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:10:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 09:10:38,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:38,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:10:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:10:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:10:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:38,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:38,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:38,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:38,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:10:38,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:38,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:38,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:38,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796864110] [2020-09-25 09:10:38,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:38,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 09:10:38,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035116743] [2020-09-25 09:10:38,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:10:38,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:38,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:10:38,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:10:38,290 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-09-25 09:10:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:38,454 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-09-25 09:10:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:10:38,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-25 09:10:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:38,456 INFO L225 Difference]: With dead ends: 61 [2020-09-25 09:10:38,456 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 09:10:38,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:10:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 09:10:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-09-25 09:10:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 09:10:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-09-25 09:10:38,467 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 19 [2020-09-25 09:10:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:38,468 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-09-25 09:10:38,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:10:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-09-25 09:10:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 09:10:38,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:38,470 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:38,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:10:38,470 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:38,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:38,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1756759471, now seen corresponding path program 1 times [2020-09-25 09:10:38,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:38,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317451737] [2020-09-25 09:10:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:39,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:39,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 09:10:39,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:10:39,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-09-25 09:10:39,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:39,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:10:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 09:10:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:10:39,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:39,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:39,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:39,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:39,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:39,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:10:39,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:39,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:10:39,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317451737] [2020-09-25 09:10:39,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:10:39,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:10:39,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371706552] [2020-09-25 09:10:39,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:10:39,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:39,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:10:39,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:10:39,202 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 8 states. [2020-09-25 09:10:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:39,409 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-09-25 09:10:39,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 09:10:39,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 09:10:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:39,412 INFO L225 Difference]: With dead ends: 59 [2020-09-25 09:10:39,412 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 09:10:39,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:10:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 09:10:39,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-09-25 09:10:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 09:10:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-09-25 09:10:39,427 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 33 [2020-09-25 09:10:39,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:39,428 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-09-25 09:10:39,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:10:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-09-25 09:10:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 09:10:39,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:39,433 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:39,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:10:39,434 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:39,434 INFO L82 PathProgramCache]: Analyzing trace with hash 737263125, now seen corresponding path program 2 times [2020-09-25 09:10:39,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:39,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250101552] [2020-09-25 09:10:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:39,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:39,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:40,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:40,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 09:10:40,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:10:40,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-09-25 09:10:40,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:40,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:10:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 09:10:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:10:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:40,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:40,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:40,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:40,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:10:40,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:40,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:40,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:10:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:10:40,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250101552] [2020-09-25 09:10:40,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:10:40,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:10:40,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332653224] [2020-09-25 09:10:40,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:10:40,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:40,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:10:40,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:10:40,910 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 10 states. [2020-09-25 09:10:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:41,159 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-09-25 09:10:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:10:41,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-25 09:10:41,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:41,162 INFO L225 Difference]: With dead ends: 66 [2020-09-25 09:10:41,162 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 09:10:41,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:10:41,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 09:10:41,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 09:10:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 09:10:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-09-25 09:10:41,173 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 40 [2020-09-25 09:10:41,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:41,174 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-09-25 09:10:41,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:10:41,174 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-09-25 09:10:41,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 09:10:41,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:41,176 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:41,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:10:41,176 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:41,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:41,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1672550673, now seen corresponding path program 3 times [2020-09-25 09:10:41,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:41,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805546853] [2020-09-25 09:10:41,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:41,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:41,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:42,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:42,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 09:10:42,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:10:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1336 [2020-09-25 09:10:42,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:42,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:10:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 09:10:42,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:10:42,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:42,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:42,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:42,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:42,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:10:42,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:10:42,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:42,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 09:10:42,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805546853] [2020-09-25 09:10:42,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:10:42,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:10:42,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873742071] [2020-09-25 09:10:42,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:10:42,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:10:42,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:10:42,664 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 10 states. [2020-09-25 09:10:42,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:42,817 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-09-25 09:10:42,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 09:10:42,818 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-09-25 09:10:42,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:42,819 INFO L225 Difference]: With dead ends: 55 [2020-09-25 09:10:42,819 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 09:10:42,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:10:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 09:10:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 09:10:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 09:10:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 09:10:42,821 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-25 09:10:42,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:42,821 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 09:10:42,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:10:42,821 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 09:10:42,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 09:10:42,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:10:42,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 09:10:42,917 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 09:10:42,917 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 09:10:42,917 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 09:10:42,917 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 09:10:42,918 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 09:10:42,918 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 09:10:42,918 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 09:10:42,918 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 09:10:42,918 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 09:10:42,918 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2020-09-25 09:10:42,918 INFO L268 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-09-25 09:10:42,919 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 09:10:42,919 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 09:10:42,919 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-25 09:10:42,919 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2020-09-25 09:10:42,919 INFO L268 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-09-25 09:10:42,919 INFO L268 CegarLoopResult]: For program point L17-6(line 17) no Hoare annotation was computed. [2020-09-25 09:10:42,919 INFO L268 CegarLoopResult]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2020-09-25 09:10:42,920 INFO L268 CegarLoopResult]: For program point L17-7(line 17) no Hoare annotation was computed. [2020-09-25 09:10:42,920 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-25 09:10:42,920 INFO L264 CegarLoopResult]: At program point L17-8(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2020-09-25 09:10:42,922 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-25 09:10:42,923 INFO L264 CegarLoopResult]: At program point L17-9(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2020-09-25 09:10:42,923 INFO L271 CegarLoopResult]: At program point L13-6(lines 13 15) the Hoare annotation is: true [2020-09-25 09:10:42,923 INFO L268 CegarLoopResult]: For program point L13-7(lines 13 15) no Hoare annotation was computed. [2020-09-25 09:10:42,923 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 9 23) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 09:10:42,923 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 09:10:42,923 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-09-25 09:10:42,923 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 09:10:42,924 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 09:10:42,924 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 09:10:42,924 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 09:10:42,924 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-25 09:10:42,924 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 09:10:42,924 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 09:10:42,925 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 09:10:42,925 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 09:10:42,925 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 09:10:42,926 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 09:10:42,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:10:42 BoogieIcfgContainer [2020-09-25 09:10:42,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:10:42,957 INFO L168 Benchmark]: Toolchain (without parser) took 6788.07 ms. Allocated memory was 138.4 MB in the beginning and 282.1 MB in the end (delta: 143.7 MB). Free memory was 102.0 MB in the beginning and 242.0 MB in the end (delta: -140.1 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:42,959 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 09:10:42,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.74 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:42,967 INFO L168 Benchmark]: Boogie Preprocessor took 125.81 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 91.6 MB in the beginning and 178.8 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:42,968 INFO L168 Benchmark]: RCFGBuilder took 382.67 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 163.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:42,969 INFO L168 Benchmark]: TraceAbstraction took 5935.71 ms. Allocated memory was 200.8 MB in the beginning and 282.1 MB in the end (delta: 81.3 MB). Free memory was 163.1 MB in the beginning and 242.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:42,983 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.74 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 91.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.81 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 91.6 MB in the beginning and 178.8 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.67 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 163.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5935.71 ms. Allocated memory was 200.8 MB in the beginning and 282.1 MB in the end (delta: 81.3 MB). Free memory was 163.1 MB in the beginning and 242.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: i <= 1023 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 81 SDslu, 422 SDs, 0 SdLazy, 411 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 23 HoareAnnotationTreeSize, 15 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 10680 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 25/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...