/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:38:19,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:38:19,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:38:19,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:38:19,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:38:19,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:38:19,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:38:19,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:38:19,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:38:19,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:38:19,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:38:19,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:38:19,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:38:19,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:38:19,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:38:19,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:38:19,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:38:19,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:38:19,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:38:19,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:38:19,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:38:19,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:38:19,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:38:19,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:38:19,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:38:19,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:38:19,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:38:19,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:38:19,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:38:19,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:38:19,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:38:19,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:38:19,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:38:19,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:38:19,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:38:19,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:38:19,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:38:19,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:38:19,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:38:19,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:38:19,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:38:19,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:38:19,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:38:19,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:38:19,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:38:19,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:38:19,547 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:38:19,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:38:19,548 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:38:19,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:38:19,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:38:19,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:38:19,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:38:19,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:38:19,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:38:19,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:38:19,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:38:19,549 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:38:19,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:38:19,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:38:19,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:38:19,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:38:19,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:38:19,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:38:19,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:38:19,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:38:19,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:38:19,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:38:19,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:38:19,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:38:19,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:38:19,552 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:38:19,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:38:19,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:38:19,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:38:19,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:38:19,877 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:38:19,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2020-10-14 05:38:19,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4ba4cdcc/8c15f60ff082409bbda1aee89f51bab6/FLAG964dfda2d [2020-10-14 05:38:20,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:38:20,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum04-1.i [2020-10-14 05:38:20,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4ba4cdcc/8c15f60ff082409bbda1aee89f51bab6/FLAG964dfda2d [2020-10-14 05:38:20,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4ba4cdcc/8c15f60ff082409bbda1aee89f51bab6 [2020-10-14 05:38:20,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:38:20,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:38:20,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:38:20,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:38:20,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:38:20,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:38:20" (1/1) ... [2020-10-14 05:38:20,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb66ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:20, skipping insertion in model container [2020-10-14 05:38:20,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:38:20" (1/1) ... [2020-10-14 05:38:20,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:38:20,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:38:21,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:38:21,058 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:38:21,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:38:21,092 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:38:21,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21 WrapperNode [2020-10-14 05:38:21,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:38:21,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:38:21,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:38:21,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:38:21,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21" (1/1) ... [2020-10-14 05:38:21,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21" (1/1) ... [2020-10-14 05:38:21,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21" (1/1) ... [2020-10-14 05:38:21,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21" (1/1) ... [2020-10-14 05:38:21,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21" (1/1) ... [2020-10-14 05:38:21,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21" (1/1) ... [2020-10-14 05:38:21,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21" (1/1) ... [2020-10-14 05:38:21,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:38:21,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:38:21,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:38:21,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:38:21,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:38:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:38:21,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:38:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:38:21,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:38:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:38:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:38:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:38:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:38:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:38:21,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:38:21,568 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:38:21,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:38:21 BoogieIcfgContainer [2020-10-14 05:38:21,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:38:21,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:38:21,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:38:21,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:38:21,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:38:20" (1/3) ... [2020-10-14 05:38:21,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b30244f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:38:21, skipping insertion in model container [2020-10-14 05:38:21,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:38:21" (2/3) ... [2020-10-14 05:38:21,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b30244f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:38:21, skipping insertion in model container [2020-10-14 05:38:21,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:38:21" (3/3) ... [2020-10-14 05:38:21,584 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2020-10-14 05:38:21,594 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:38:21,603 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:38:21,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:38:21,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:38:21,645 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:38:21,645 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:38:21,645 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:38:21,646 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:38:21,646 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:38:21,646 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:38:21,646 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:38:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-14 05:38:21,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:38:21,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:21,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:21,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:21,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:21,672 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2020-10-14 05:38:21,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:21,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786151323] [2020-10-14 05:38:21,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:21,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:21,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:38:21,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:38:21,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 05:38:21,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:21,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:38:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:38:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:21,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:21,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:21,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:21,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:38:21,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:21,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:21,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:21,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 05:38:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:38:21,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786151323] [2020-10-14 05:38:21,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:38:21,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 05:38:21,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070744382] [2020-10-14 05:38:21,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 05:38:21,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:21,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 05:38:21,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:38:21,980 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-14 05:38:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:21,997 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-10-14 05:38:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 05:38:21,998 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-14 05:38:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:22,004 INFO L225 Difference]: With dead ends: 30 [2020-10-14 05:38:22,004 INFO L226 Difference]: Without dead ends: 13 [2020-10-14 05:38:22,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:38:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-14 05:38:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-14 05:38:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-14 05:38:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-10-14 05:38:22,038 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-10-14 05:38:22,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:22,039 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-10-14 05:38:22,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 05:38:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-10-14 05:38:22,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:38:22,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:22,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:22,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:38:22,041 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:22,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:22,042 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2020-10-14 05:38:22,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:22,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295841049] [2020-10-14 05:38:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:22,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:38:22,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:38:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 05:38:22,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:22,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:38:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:22,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:38:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:22,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:22,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:22,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:38:22,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:22,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:22,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:22,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:38:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:38:22,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295841049] [2020-10-14 05:38:22,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:38:22,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:38:22,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393778841] [2020-10-14 05:38:22,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:38:22,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:22,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:38:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:38:22,260 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2020-10-14 05:38:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:22,319 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-10-14 05:38:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:38:22,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 05:38:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:22,321 INFO L225 Difference]: With dead ends: 24 [2020-10-14 05:38:22,321 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 05:38:22,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:38:22,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 05:38:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-14 05:38:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 05:38:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-14 05:38:22,328 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-10-14 05:38:22,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:22,328 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-14 05:38:22,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:38:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-14 05:38:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:38:22,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:22,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:22,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:38:22,330 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:22,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2020-10-14 05:38:22,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:22,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779619526] [2020-10-14 05:38:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:38:22,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:38:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 05:38:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:22,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:38:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:38:22,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 05:38:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:22,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:38:22,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:22,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:38:22,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779619526] [2020-10-14 05:38:22,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:22,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:38:22,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333723097] [2020-10-14 05:38:22,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:38:22,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:22,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:38:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:38:22,530 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-10-14 05:38:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:22,561 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-10-14 05:38:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:38:22,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 05:38:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:22,563 INFO L225 Difference]: With dead ends: 27 [2020-10-14 05:38:22,563 INFO L226 Difference]: Without dead ends: 19 [2020-10-14 05:38:22,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:38:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-14 05:38:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-14 05:38:22,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 05:38:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-14 05:38:22,569 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-10-14 05:38:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:22,569 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-14 05:38:22,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:38:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-14 05:38:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 05:38:22,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:22,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:22,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:38:22,571 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:22,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:22,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1717165257, now seen corresponding path program 2 times [2020-10-14 05:38:22,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:22,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567492221] [2020-10-14 05:38:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:22,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:22,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:38:22,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:38:22,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 05:38:22,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:22,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:22,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:38:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:22,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:38:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:22,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:22,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:22,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:38:22,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:22,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:38:22,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567492221] [2020-10-14 05:38:22,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:22,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:38:22,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123263766] [2020-10-14 05:38:22,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:38:22,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:22,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:38:22,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:38:22,718 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-10-14 05:38:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:22,756 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-10-14 05:38:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:38:22,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-14 05:38:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:22,757 INFO L225 Difference]: With dead ends: 30 [2020-10-14 05:38:22,758 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 05:38:22,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:38:22,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 05:38:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-14 05:38:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:38:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-14 05:38:22,764 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2020-10-14 05:38:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:22,764 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-14 05:38:22,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:38:22,765 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-14 05:38:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 05:38:22,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:22,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:22,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:38:22,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:22,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:22,767 INFO L82 PathProgramCache]: Analyzing trace with hash -424886253, now seen corresponding path program 3 times [2020-10-14 05:38:22,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:22,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103046844] [2020-10-14 05:38:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:22,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:38:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:38:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 05:38:23,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:23,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:38:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:38:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:38:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:23,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:23,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:23,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:23,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:38:23,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:23,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:23,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:38:23,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103046844] [2020-10-14 05:38:23,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:23,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:38:23,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690365965] [2020-10-14 05:38:23,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:38:23,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:23,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:38:23,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:38:23,101 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-10-14 05:38:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:23,133 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-10-14 05:38:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:38:23,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-14 05:38:23,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:23,137 INFO L225 Difference]: With dead ends: 33 [2020-10-14 05:38:23,137 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 05:38:23,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:38:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 05:38:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-14 05:38:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 05:38:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-14 05:38:23,145 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 19 [2020-10-14 05:38:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:23,145 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-14 05:38:23,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:38:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-14 05:38:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 05:38:23,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:23,147 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:23,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:38:23,147 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:23,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:23,147 INFO L82 PathProgramCache]: Analyzing trace with hash -2146400685, now seen corresponding path program 1 times [2020-10-14 05:38:23,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:23,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900143667] [2020-10-14 05:38:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:23,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 05:38:23,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:38:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 05:38:23,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:23,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:38:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:38:23,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:23,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:23,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:23,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:38:23,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:23,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:38:23,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900143667] [2020-10-14 05:38:23,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:23,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:38:23,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447768027] [2020-10-14 05:38:23,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:38:23,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:23,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:38:23,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:38:23,410 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 8 states. [2020-10-14 05:38:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:23,473 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-14 05:38:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:38:23,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-14 05:38:23,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:23,475 INFO L225 Difference]: With dead ends: 36 [2020-10-14 05:38:23,475 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 05:38:23,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:38:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 05:38:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-14 05:38:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 05:38:23,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 05:38:23,482 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2020-10-14 05:38:23,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:23,482 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 05:38:23,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:38:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 05:38:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:38:23,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:23,483 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:23,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:38:23,484 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:23,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:23,484 INFO L82 PathProgramCache]: Analyzing trace with hash 115125753, now seen corresponding path program 2 times [2020-10-14 05:38:23,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:23,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038888906] [2020-10-14 05:38:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:23,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:38:23,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:38:23,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 05:38:23,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:23,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:23,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:38:23,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:23,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:38:23,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:23,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:23,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:23,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:23,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:38:23,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:23,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:23,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:23,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:38:23,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038888906] [2020-10-14 05:38:23,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:23,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:38:23,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318015115] [2020-10-14 05:38:23,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:38:23,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:23,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:38:23,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:38:23,775 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 9 states. [2020-10-14 05:38:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:23,831 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-14 05:38:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:38:23,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-14 05:38:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:23,833 INFO L225 Difference]: With dead ends: 39 [2020-10-14 05:38:23,833 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 05:38:23,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:38:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 05:38:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-14 05:38:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 05:38:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 05:38:23,839 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 28 [2020-10-14 05:38:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:23,840 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 05:38:23,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:38:23,840 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 05:38:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:38:23,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:23,841 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:23,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:38:23,841 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1902732141, now seen corresponding path program 3 times [2020-10-14 05:38:23,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:23,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011761699] [2020-10-14 05:38:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:23,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:23,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 05:38:23,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:38:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 05:38:23,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:23,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:38:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:38:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:38:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:38:24,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:38:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:38:24,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:38:24,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:38:24,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:38:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:38:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:38:24,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:38:24,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:38:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:38:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:38:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:38:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:38:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:38:24,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011761699] [2020-10-14 05:38:24,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:38:24,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:38:24,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069123880] [2020-10-14 05:38:24,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:38:24,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:38:24,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:38:24,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:38:24,071 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 10 states. [2020-10-14 05:38:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:38:24,149 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-14 05:38:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:38:24,150 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-14 05:38:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:38:24,151 INFO L225 Difference]: With dead ends: 40 [2020-10-14 05:38:24,151 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 05:38:24,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:38:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 05:38:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-14 05:38:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 05:38:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-14 05:38:24,157 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 31 [2020-10-14 05:38:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:38:24,157 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-14 05:38:24,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:38:24,157 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-14 05:38:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 05:38:24,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:38:24,158 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:38:24,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:38:24,159 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:38:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:38:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash 749989817, now seen corresponding path program 4 times [2020-10-14 05:38:24,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:38:24,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471166190] [2020-10-14 05:38:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:38:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 05:38:24,168 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 05:38:24,168 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 05:38:24,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:38:24,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:38:24 BoogieIcfgContainer [2020-10-14 05:38:24,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:38:24,195 INFO L168 Benchmark]: Toolchain (without parser) took 3413.65 ms. Allocated memory was 144.2 MB in the beginning and 243.8 MB in the end (delta: 99.6 MB). Free memory was 100.7 MB in the beginning and 156.6 MB in the end (delta: -55.9 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-10-14 05:38:24,195 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 144.2 MB. Free memory was 118.8 MB in the beginning and 118.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 05:38:24,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.15 ms. Allocated memory is still 144.2 MB. Free memory was 100.3 MB in the beginning and 91.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:38:24,197 INFO L168 Benchmark]: Boogie Preprocessor took 178.54 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 91.1 MB in the beginning and 182.1 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:38:24,198 INFO L168 Benchmark]: RCFGBuilder took 299.04 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 170.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:38:24,199 INFO L168 Benchmark]: TraceAbstraction took 2615.70 ms. Allocated memory was 203.4 MB in the beginning and 243.8 MB in the end (delta: 40.4 MB). Free memory was 170.3 MB in the beginning and 156.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:38:24,202 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 144.2 MB. Free memory was 118.8 MB in the beginning and 118.3 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.15 ms. Allocated memory is still 144.2 MB. Free memory was 100.3 MB in the beginning and 91.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 178.54 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 91.1 MB in the beginning and 182.1 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.04 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 170.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2615.70 ms. Allocated memory was 203.4 MB in the beginning and 243.8 MB in the end (delta: 40.4 MB). Free memory was 170.3 MB in the beginning and 156.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, sn=0; [L13] i=1 [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND FALSE !(i<=8) [L17] CALL __VERIFIER_assert(sn==8*(2) || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 9, TraceHistogramMax: 8, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 62 SDslu, 216 SDs, 0 SdLazy, 151 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=8, 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, 8 MinimizatonAttempts, 9 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 6678 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 10/174 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 incorrect! Received shutdown request...