/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=0.4 --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-invgen/id_build.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:44:21,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:44:21,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:44:21,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:44:21,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:44:21,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:44:21,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:44:21,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:44:21,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:44:21,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:44:21,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:44:21,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:44:21,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:44:21,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:44:21,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:44:21,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:44:21,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:44:21,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:44:21,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:44:21,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:44:21,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:44:21,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:44:21,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:44:21,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:44:21,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:44:21,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:44:21,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:44:21,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:44:21,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:44:21,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:44:21,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:44:21,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:44:21,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:44:21,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:44:21,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:44:21,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:44:21,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:44:21,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:44:21,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:44:21,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:44:21,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:44:21,443 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 05:44:21,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:44:21,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:44:21,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:44:21,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:44:21,501 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:44:21,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:44:21,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:44:21,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:44:21,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:44:21,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:44:21,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:44:21,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:44:21,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:44:21,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:44:21,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:44:21,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:44:21,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:44:21,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:44:21,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:44:21,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:44:21,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:44:21,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:44:21,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:44:21,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:44:21,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:44:21,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:44:21,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:44:21,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:44:21,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:44:21,508 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:44:22,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:44:22,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:44:22,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:44:22,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:44:22,035 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:44:22,037 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-09-25 05:44:22,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e520062d/67c5767f5f534d8487c05ca95484b1f4/FLAGc8344b1b1 [2020-09-25 05:44:22,642 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:44:22,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_build.i.v+lhb-reducer.c [2020-09-25 05:44:22,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e520062d/67c5767f5f534d8487c05ca95484b1f4/FLAGc8344b1b1 [2020-09-25 05:44:22,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e520062d/67c5767f5f534d8487c05ca95484b1f4 [2020-09-25 05:44:22,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:44:22,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:44:22,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:44:22,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:44:22,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:44:22,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:44:22" (1/1) ... [2020-09-25 05:44:23,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1058f97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23, skipping insertion in model container [2020-09-25 05:44:23,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:44:22" (1/1) ... [2020-09-25 05:44:23,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:44:23,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:44:23,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:44:23,287 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:44:23,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:44:23,333 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:44:23,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23 WrapperNode [2020-09-25 05:44:23,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:44:23,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:44:23,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:44:23,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:44:23,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23" (1/1) ... [2020-09-25 05:44:23,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23" (1/1) ... [2020-09-25 05:44:23,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23" (1/1) ... [2020-09-25 05:44:23,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23" (1/1) ... [2020-09-25 05:44:23,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23" (1/1) ... [2020-09-25 05:44:23,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23" (1/1) ... [2020-09-25 05:44:23,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23" (1/1) ... [2020-09-25 05:44:23,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:44:23,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:44:23,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:44:23,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:44:23,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23" (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 05:44:23,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:44:23,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:44:23,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 05:44:23,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:44:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:44:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:44:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 05:44:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:44:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:44:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:44:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:44:23,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:44:23,889 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:44:23,890 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:44:23,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:44:23 BoogieIcfgContainer [2020-09-25 05:44:23,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:44:23,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:44:23,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:44:23,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:44:23,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:44:22" (1/3) ... [2020-09-25 05:44:23,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1e666d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:44:23, skipping insertion in model container [2020-09-25 05:44:23,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:23" (2/3) ... [2020-09-25 05:44:23,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1e666d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:44:23, skipping insertion in model container [2020-09-25 05:44:23,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:44:23" (3/3) ... [2020-09-25 05:44:23,924 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.v+lhb-reducer.c [2020-09-25 05:44:23,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:44:23,946 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 05:44:23,970 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 05:44:24,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:44:24,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:44:24,004 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:44:24,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:44:24,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:44:24,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:44:24,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:44:24,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:44:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-25 05:44:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 05:44:24,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:24,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:24,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:24,058 INFO L82 PathProgramCache]: Analyzing trace with hash -627197159, now seen corresponding path program 1 times [2020-09-25 05:44:24,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:24,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650742579] [2020-09-25 05:44:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:24,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:24,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:44:24,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 05:44:24,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:24,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:44:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:44:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:44:24,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:44:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:24,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:24,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:44:24,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:24,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:44:24,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:24,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:24,507 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 05:44:24,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650742579] [2020-09-25 05:44:24,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:24,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:44:24,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15374328] [2020-09-25 05:44:24,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:44:24,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:24,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:44:24,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:44:24,535 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 6 states. [2020-09-25 05:44:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:24,825 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-09-25 05:44:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:44:24,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 05:44:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:24,841 INFO L225 Difference]: With dead ends: 61 [2020-09-25 05:44:24,841 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 05:44:24,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:44:24,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 05:44:24,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 05:44:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 05:44:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-09-25 05:44:24,901 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 24 [2020-09-25 05:44:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:24,902 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-09-25 05:44:24,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:44:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-09-25 05:44:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 05:44:24,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:24,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:24,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:44:24,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:24,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1662596629, now seen corresponding path program 1 times [2020-09-25 05:44:24,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:24,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719911633] [2020-09-25 05:44:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:25,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:25,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:44:25,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 05:44:25,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:25,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:44:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:44:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:44:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:44:25,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:25,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:25,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:25,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:44:25,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:25,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:44:25,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:25,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:25,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:25,298 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 05:44:25,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719911633] [2020-09-25 05:44:25,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:25,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:44:25,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919543522] [2020-09-25 05:44:25,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:44:25,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:25,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:44:25,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:44:25,303 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 6 states. [2020-09-25 05:44:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:25,476 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-09-25 05:44:25,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:44:25,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 05:44:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:25,478 INFO L225 Difference]: With dead ends: 46 [2020-09-25 05:44:25,478 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 05:44:25,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:44:25,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 05:44:25,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-25 05:44:25,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 05:44:25,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-09-25 05:44:25,489 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 29 [2020-09-25 05:44:25,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:25,489 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-09-25 05:44:25,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:44:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-09-25 05:44:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 05:44:25,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:25,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:25,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:44:25,492 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:25,492 INFO L82 PathProgramCache]: Analyzing trace with hash 792220297, now seen corresponding path program 1 times [2020-09-25 05:44:25,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:25,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437340773] [2020-09-25 05:44:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:25,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:25,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:25,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:44:25,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:44:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-25 05:44:25,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:25,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:25,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:44:25,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:44:25,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:44:25,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:44:25,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:25,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:44:25,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:44:25,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:25,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:25,832 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 05:44:25,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437340773] [2020-09-25 05:44:25,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:25,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:44:25,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971275754] [2020-09-25 05:44:25,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:44:25,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:25,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:44:25,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:44:25,835 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 6 states. [2020-09-25 05:44:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:26,023 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-09-25 05:44:26,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:44:26,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 05:44:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:26,024 INFO L225 Difference]: With dead ends: 54 [2020-09-25 05:44:26,024 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:44:26,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:44:26,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:44:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:44:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:44:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:44:26,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-09-25 05:44:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:26,027 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:44:26,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:44:26,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:44:26,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:44:26,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:44:26,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:44:26,178 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:44:26,179 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 05:44:26,179 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_100~0 |old(~__return_100~0)|) (= ~__return_main~0 |old(~__return_main~0)|)) [2020-09-25 05:44:26,179 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:44:26,179 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:44:26,179 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:44:26,180 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:44:26,180 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:44:26,180 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-25 05:44:26,180 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 05:44:26,180 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 05:44:26,180 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-25 05:44:26,180 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-25 05:44:26,181 INFO L268 CegarLoopResult]: For program point L31(lines 31 87) no Hoare annotation was computed. [2020-09-25 05:44:26,181 INFO L264 CegarLoopResult]: At program point L93(lines 12 100) the Hoare annotation is: (and (= |old(~__return_100~0)| ~__return_100~0) (< 0 (+ main_~main__i~0 1))) [2020-09-25 05:44:26,181 INFO L268 CegarLoopResult]: For program point L60(lines 60 68) no Hoare annotation was computed. [2020-09-25 05:44:26,181 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 05:44:26,181 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 100) no Hoare annotation was computed. [2020-09-25 05:44:26,181 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-25 05:44:26,182 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 05:44:26,182 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 05:44:26,182 INFO L268 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-09-25 05:44:26,182 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 05:44:26,183 INFO L264 CegarLoopResult]: At program point L77(lines 50 85) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (not (= main_~__tmp_2~0 0)) (< 0 .cse0) (<= 1 main_~__tmp_1~0) (<= 1 main_~__VERIFIER_assert__cond~0) (not (= main_~__VERIFIER_assert__cond~1 0)))) [2020-09-25 05:44:26,183 INFO L268 CegarLoopResult]: For program point L44(lines 44 85) no Hoare annotation was computed. [2020-09-25 05:44:26,183 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-09-25 05:44:26,183 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-25 05:44:26,184 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 62) no Hoare annotation was computed. [2020-09-25 05:44:26,184 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 05:44:26,188 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-25 05:44:26,188 INFO L268 CegarLoopResult]: For program point L24(lines 24 94) no Hoare annotation was computed. [2020-09-25 05:44:26,188 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-09-25 05:44:26,188 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 05:44:26,188 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 05:44:26,189 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 05:44:26,190 INFO L268 CegarLoopResult]: For program point L74(lines 74 83) no Hoare annotation was computed. [2020-09-25 05:44:26,190 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 05:44:26,190 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 05:44:26,190 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-09-25 05:44:26,191 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-25 05:44:26,191 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 05:44:26,191 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-25 05:44:26,191 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 05:44:26,192 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 05:44:26,192 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 100) no Hoare annotation was computed. [2020-09-25 05:44:26,192 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 05:44:26,192 INFO L264 CegarLoopResult]: At program point L67(lines 37 87) the Hoare annotation is: (let ((.cse0 (+ main_~main__i~0 1))) (and (<= .cse0 main_~main__nlen~0) (= |old(~__return_100~0)| ~__return_100~0) (< 0 .cse0) (<= 1 main_~__tmp_1~0) (<= 1 main_~__VERIFIER_assert__cond~0))) [2020-09-25 05:44:26,192 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 05:44:26,193 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-09-25 05:44:26,193 INFO L268 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed. [2020-09-25 05:44:26,193 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 05:44:26,193 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 100) the Hoare annotation is: (= |old(~__return_100~0)| ~__return_100~0) [2020-09-25 05:44:26,193 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-25 05:44:26,193 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-25 05:44:26,194 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 05:44:26,194 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 05:44:26,194 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 05:44:26,194 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 05:44:26,194 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-09-25 05:44:26,194 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 05:44:26,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:44:26 BoogieIcfgContainer [2020-09-25 05:44:26,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:44:26,233 INFO L168 Benchmark]: Toolchain (without parser) took 3242.88 ms. Allocated memory was 146.8 MB in the beginning and 234.4 MB in the end (delta: 87.6 MB). Free memory was 103.6 MB in the beginning and 123.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:44:26,234 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 05:44:26,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.53 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 92.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:44:26,238 INFO L168 Benchmark]: Boogie Preprocessor took 41.04 ms. Allocated memory is still 146.8 MB. Free memory was 92.6 MB in the beginning and 91.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 05:44:26,239 INFO L168 Benchmark]: RCFGBuilder took 537.07 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 166.0 MB in the end (delta: -74.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:44:26,241 INFO L168 Benchmark]: TraceAbstraction took 2311.83 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 165.3 MB in the beginning and 123.5 MB in the end (delta: 41.8 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:44:26,257 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.53 ms. Allocated memory is still 146.8 MB. Free memory was 102.9 MB in the beginning and 92.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.04 ms. Allocated memory is still 146.8 MB. Free memory was 92.6 MB in the beginning and 91.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 537.07 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 166.0 MB in the end (delta: -74.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2311.83 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 165.3 MB in the beginning and 123.5 MB in the end (delta: 41.8 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 62]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: \old(__return_100) == __return_100 && 0 < main__i + 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (((((main__i + 1 <= main__nlen && \old(__return_100) == __return_100) && !(__tmp_2 == 0)) && 0 < main__i + 1) && 1 <= __tmp_1) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((main__i + 1 <= main__nlen && \old(__return_100) == __return_100) && 0 < main__i + 1) && 1 <= __tmp_1) && 1 <= __VERIFIER_assert__cond - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 60 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 259 SDslu, 73 SDs, 0 SdLazy, 222 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 9 NumberOfFragments, 69 HoareAnnotationTreeSize, 7 FomulaSimplifications, 156 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 7382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...