/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=SMALLESTAMONGWIDE --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-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:40:31,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:40:31,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:40:31,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:40:31,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:40:31,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:40:31,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:40:31,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:40:31,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:40:31,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:40:31,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:40:31,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:40:31,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:40:31,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:40:31,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:40:31,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:40:31,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:40:31,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:40:31,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:40:31,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:40:31,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:40:31,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:40:31,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:40:31,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:40:31,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:40:31,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:40:31,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:40:31,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:40:31,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:40:31,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:40:31,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:40:31,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:40:31,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:40:31,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:40:31,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:40:31,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:40:31,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:40:31,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:40:31,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:40:31,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:40:31,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:40:31,959 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 13:40:31,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:40:31,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:40:31,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:40:31,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:40:31,990 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:40:31,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:40:31,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:40:31,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:40:31,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:40:31,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:40:31,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:40:31,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:40:31,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:40:31,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:40:31,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:40:31,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:40:31,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:40:31,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:40:31,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:40:31,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:40:31,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:40:31,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:40:31,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:40:31,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:40:31,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:40:31,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:40:31,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:40:31,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:40:31,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:40:31,995 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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:40:32,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:40:32,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:40:32,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:40:32,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:40:32,500 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:40:32,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-09-25 13:40:32,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dba29ab99/82a2a67a66ae48338eb8f560c2d35581/FLAG6b3730582 [2020-09-25 13:40:33,135 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:40:33,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-09-25 13:40:33,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dba29ab99/82a2a67a66ae48338eb8f560c2d35581/FLAG6b3730582 [2020-09-25 13:40:33,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dba29ab99/82a2a67a66ae48338eb8f560c2d35581 [2020-09-25 13:40:33,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:40:33,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:40:33,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:33,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:40:33,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:40:33,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:33" (1/1) ... [2020-09-25 13:40:33,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef58f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33, skipping insertion in model container [2020-09-25 13:40:33,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:33" (1/1) ... [2020-09-25 13:40:33,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:40:33,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:40:33,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:33,802 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:40:33,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:33,834 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:40:33,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33 WrapperNode [2020-09-25 13:40:33,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:33,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:40:33,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:40:33,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:40:33,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33" (1/1) ... [2020-09-25 13:40:33,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33" (1/1) ... [2020-09-25 13:40:33,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33" (1/1) ... [2020-09-25 13:40:33,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33" (1/1) ... [2020-09-25 13:40:33,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33" (1/1) ... [2020-09-25 13:40:33,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33" (1/1) ... [2020-09-25 13:40:33,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33" (1/1) ... [2020-09-25 13:40:33,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:40:33,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:40:33,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:40:33,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:40:33,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33" (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 13:40:34,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:40:34,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:40:34,052 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:40:34,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:40:34,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:40:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:40:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:40:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:40:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:40:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:40:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:40:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:40:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:40:34,328 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:40:34,329 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:40:34,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:34 BoogieIcfgContainer [2020-09-25 13:40:34,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:40:34,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:40:34,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:40:34,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:40:34,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:40:33" (1/3) ... [2020-09-25 13:40:34,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1203721a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:34, skipping insertion in model container [2020-09-25 13:40:34,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:33" (2/3) ... [2020-09-25 13:40:34,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1203721a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:34, skipping insertion in model container [2020-09-25 13:40:34,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:34" (3/3) ... [2020-09-25 13:40:34,373 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-09-25 13:40:34,399 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:40:34,418 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:40:34,440 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:40:34,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:40:34,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:40:34,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:40:34,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:40:34,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:40:34,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:40:34,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:40:34,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:40:34,491 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 13:40:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 13:40:34,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:34,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:34,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:34,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash 627729613, now seen corresponding path program 1 times [2020-09-25 13:40:34,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:34,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217641319] [2020-09-25 13:40:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:40:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 13:40:34,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:40:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:40:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:40:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:34,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:34,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:34,853 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 13:40:34,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217641319] [2020-09-25 13:40:34,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:34,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:40:34,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535178198] [2020-09-25 13:40:34,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:40:34,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:34,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:40:34,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:40:34,886 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-09-25 13:40:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:34,944 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-09-25 13:40:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:40:34,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-25 13:40:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:34,956 INFO L225 Difference]: With dead ends: 43 [2020-09-25 13:40:34,957 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 13:40:34,961 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 [2020-09-25 13:40:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 13:40:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 13:40:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 13:40:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-25 13:40:35,002 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2020-09-25 13:40:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:35,003 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-25 13:40:35,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:40:35,003 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-25 13:40:35,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 13:40:35,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:35,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:35,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:40:35,005 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:35,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:35,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1623753589, now seen corresponding path program 1 times [2020-09-25 13:40:35,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:35,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480330409] [2020-09-25 13:40:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:35,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:35,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:35,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:40:35,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-09-25 13:40:35,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:35,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:40:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:40:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:40:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:35,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:35,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:35,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:35,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:35,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:35,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:35,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:35,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480330409] [2020-09-25 13:40:35,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:35,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:40:35,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015986858] [2020-09-25 13:40:35,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:35,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:35,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:35,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:35,894 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 11 states. [2020-09-25 13:40:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:36,307 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-09-25 13:40:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:40:36,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-09-25 13:40:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:36,310 INFO L225 Difference]: With dead ends: 32 [2020-09-25 13:40:36,310 INFO L226 Difference]: Without dead ends: 27 [2020-09-25 13:40:36,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:40:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-25 13:40:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-25 13:40:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-25 13:40:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-25 13:40:36,318 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2020-09-25 13:40:36,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:36,319 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-25 13:40:36,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:36,319 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-25 13:40:36,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 13:40:36,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:36,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:36,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:40:36,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:36,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1189706423, now seen corresponding path program 2 times [2020-09-25 13:40:36,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:36,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201192896] [2020-09-25 13:40:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 13:40:36,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 13:40:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:40:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:40:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:40:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:36,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:36,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:36,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:36,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:36,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:36,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:36,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:36,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:36,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:40:36,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201192896] [2020-09-25 13:40:36,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:36,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:40:36,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59271784] [2020-09-25 13:40:36,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:40:36,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:36,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:40:36,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:40:36,755 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 13 states. [2020-09-25 13:40:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:37,024 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-25 13:40:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:40:37,025 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-09-25 13:40:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:37,026 INFO L225 Difference]: With dead ends: 27 [2020-09-25 13:40:37,026 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:40:37,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:40:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:40:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:40:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:40:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:40:37,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-25 13:40:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:37,029 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:40:37,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:40:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:40:37,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:40:37,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:40:37,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:40:37,112 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 13:40:37,112 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:40:37,112 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:40:37,112 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 13:40:37,113 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 13:40:37,113 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:40:37,113 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:40:37,113 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:40:37,113 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 13:40:37,113 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 13:40:37,114 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:40:37,114 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-25 13:40:37,114 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 13:40:37,114 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 13:40:37,123 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 23) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~lo~0 main_~hi~0) (<= main_~hi~0 .cse0) (<= .cse0 main_~hi~0))) [2020-09-25 13:40:37,123 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 13:40:37,124 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 23) the Hoare annotation is: (and (= main_~hi~0 main_~lo~0) (<= (+ (* 2 main_~mid~0) main_~lo~0) main_~hi~0)) [2020-09-25 13:40:37,124 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 13:40:37,124 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-09-25 13:40:37,125 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-25 13:40:37,125 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 13:40:37,125 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 13:40:37,125 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 13:40:37,125 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 13:40:37,125 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 13:40:37,126 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 13:40:37,126 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 13:40:37,126 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 13:40:37,126 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 13:40:37,126 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 13:40:37,126 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 13:40:37,127 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 13:40:37,127 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 13:40:37,127 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 13:40:37,129 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 13:40:37,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:40:37 BoogieIcfgContainer [2020-09-25 13:40:37,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:40:37,155 INFO L168 Benchmark]: Toolchain (without parser) took 3618.29 ms. Allocated memory was 144.7 MB in the beginning and 245.9 MB in the end (delta: 101.2 MB). Free memory was 103.6 MB in the beginning and 217.6 MB in the end (delta: -114.0 MB). Peak memory consumption was 112.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:37,156 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:40:37,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.77 ms. Allocated memory is still 144.7 MB. Free memory was 103.0 MB in the beginning and 93.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:37,158 INFO L168 Benchmark]: Boogie Preprocessor took 125.58 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 93.6 MB in the beginning and 182.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:37,159 INFO L168 Benchmark]: RCFGBuilder took 386.10 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 169.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:37,160 INFO L168 Benchmark]: TraceAbstraction took 2801.74 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 168.5 MB in the beginning and 217.6 MB in the end (delta: -49.2 MB). Peak memory consumption was 118.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:40:37,165 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.77 ms. Allocated memory is still 144.7 MB. Free memory was 103.0 MB in the beginning and 93.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.58 ms. Allocated memory was 144.7 MB in the beginning and 203.4 MB in the end (delta: 58.7 MB). Free memory was 93.6 MB in the beginning and 182.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 386.10 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 169.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2801.74 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 168.5 MB in the beginning and 217.6 MB in the end (delta: -49.2 MB). Peak memory consumption was 118.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (lo <= hi && hi <= 2 * mid + lo) && 2 * mid + lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 12 SDslu, 186 SDs, 0 SdLazy, 213 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 34 HoareAnnotationTreeSize, 9 FomulaSimplifications, 51 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 8821 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/7 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...