/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=0.3 --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/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:33:00,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:33:00,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:33:00,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:33:00,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:33:00,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:33:00,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:33:00,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:33:00,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:33:00,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:33:00,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:33:00,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:33:00,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:33:00,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:33:00,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:33:00,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:33:00,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:33:00,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:33:00,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:33:00,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:33:00,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:33:00,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:33:00,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:33:00,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:33:00,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:33:00,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:33:00,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:33:00,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:33:00,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:33:00,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:33:00,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:33:00,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:33:00,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:33:00,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:33:00,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:33:00,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:33:00,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:33:00,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:33:00,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:33:00,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:33:00,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:33:00,987 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 12:33:01,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:33:01,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:33:01,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:33:01,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:33:01,014 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:33:01,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:33:01,015 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:33:01,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:33:01,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:33:01,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:33:01,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:33:01,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:33:01,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:33:01,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:33:01,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:33:01,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:33:01,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:33:01,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:33:01,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:33:01,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:33:01,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:33:01,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:33:01,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:33:01,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:33:01,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:33:01,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:33:01,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:33:01,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:33:01,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:33:01,019 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:33:01,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:33:01,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:33:01,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:33:01,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:33:01,536 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:33:01,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-25 12:33:01,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/454723b87/df4b364870c84fd0bf2d4ecd550b0b4c/FLAG45dc045c1 [2020-09-25 12:33:02,213 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:33:02,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-25 12:33:02,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/454723b87/df4b364870c84fd0bf2d4ecd550b0b4c/FLAG45dc045c1 [2020-09-25 12:33:02,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/454723b87/df4b364870c84fd0bf2d4ecd550b0b4c [2020-09-25 12:33:02,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:33:02,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:33:02,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:33:02,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:33:02,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:33:02,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:33:02" (1/1) ... [2020-09-25 12:33:02,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6d7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02, skipping insertion in model container [2020-09-25 12:33:02,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:33:02" (1/1) ... [2020-09-25 12:33:02,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:33:02,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:33:02,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:33:02,841 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:33:02,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:33:02,889 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:33:02,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02 WrapperNode [2020-09-25 12:33:02,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:33:02,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:33:02,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:33:02,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:33:02,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02" (1/1) ... [2020-09-25 12:33:02,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02" (1/1) ... [2020-09-25 12:33:02,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02" (1/1) ... [2020-09-25 12:33:02,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02" (1/1) ... [2020-09-25 12:33:02,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02" (1/1) ... [2020-09-25 12:33:02,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02" (1/1) ... [2020-09-25 12:33:02,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02" (1/1) ... [2020-09-25 12:33:03,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:33:03,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:33:03,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:33:03,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:33:03,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02" (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 12:33:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:33:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:33:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 12:33:03,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:33:03,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:33:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:33:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:33:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 12:33:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:33:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:33:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:33:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:33:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:33:03,351 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:33:03,351 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:33:03,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:33:03 BoogieIcfgContainer [2020-09-25 12:33:03,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:33:03,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:33:03,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:33:03,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:33:03,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:33:02" (1/3) ... [2020-09-25 12:33:03,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a50ece8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:33:03, skipping insertion in model container [2020-09-25 12:33:03,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:33:02" (2/3) ... [2020-09-25 12:33:03,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a50ece8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:33:03, skipping insertion in model container [2020-09-25 12:33:03,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:33:03" (3/3) ... [2020-09-25 12:33:03,368 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-09-25 12:33:03,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:33:03,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:33:03,442 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:33:03,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:33:03,513 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:33:03,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:33:03,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:33:03,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:33:03,514 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:33:03,514 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:33:03,514 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:33:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-25 12:33:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 12:33:03,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:03,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:33:03,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:03,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:03,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1007675669, now seen corresponding path program 1 times [2020-09-25 12:33:03,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:03,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227805350] [2020-09-25 12:33:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:03,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:03,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 12:33:03,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:33:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 12:33:03,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:03,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:33:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:33:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:33:03,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:33:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:03,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:03,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:03,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:03,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:33:03,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:03,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:03,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:03,936 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 12:33:03,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227805350] [2020-09-25 12:33:03,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:33:03,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:33:03,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441308757] [2020-09-25 12:33:03,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:33:03,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:03,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:33:03,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:33:03,976 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-09-25 12:33:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:04,079 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-09-25 12:33:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:33:04,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-25 12:33:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:04,095 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:33:04,096 INFO L226 Difference]: Without dead ends: 37 [2020-09-25 12:33:04,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:33:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-25 12:33:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-09-25 12:33:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 12:33:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 12:33:04,160 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2020-09-25 12:33:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:04,161 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 12:33:04,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:33:04,161 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 12:33:04,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 12:33:04,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:04,163 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:33:04,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:33:04,165 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:04,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:04,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1988212296, now seen corresponding path program 1 times [2020-09-25 12:33:04,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:04,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979079951] [2020-09-25 12:33:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:04,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:04,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:33:04,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:33:04,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 12:33:04,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:04,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:33:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:33:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:33:04,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:04,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:04,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:04,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:04,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:04,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:33:04,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:04,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:04,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:04,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:33:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:04,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:04,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:33:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:33:04,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:04,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:33:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:33:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:33:04,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979079951] [2020-09-25 12:33:04,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:33:04,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:33:04,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028392354] [2020-09-25 12:33:04,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:33:04,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:04,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:33:04,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:33:04,529 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-09-25 12:33:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:04,567 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-09-25 12:33:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:33:04,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 12:33:04,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:04,569 INFO L225 Difference]: With dead ends: 43 [2020-09-25 12:33:04,569 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 12:33:04,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:33:04,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 12:33:04,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-09-25 12:33:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-25 12:33:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-09-25 12:33:04,581 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2020-09-25 12:33:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:04,581 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-09-25 12:33:04,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:33:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-09-25 12:33:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 12:33:04,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:04,583 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] [2020-09-25 12:33:04,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:33:04,584 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:04,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:04,584 INFO L82 PathProgramCache]: Analyzing trace with hash 2096508511, now seen corresponding path program 1 times [2020-09-25 12:33:04,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:04,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973389621] [2020-09-25 12:33:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:04,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:04,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:33:04,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:33:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 12:33:04,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:04,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:33:04,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:33:04,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:33:04,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:04,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:04,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:04,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:04,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:04,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:33:04,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:04,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:04,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:04,892 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 12:33:04,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973389621] [2020-09-25 12:33:04,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:33:04,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:33:04,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839775691] [2020-09-25 12:33:04,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:33:04,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:04,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:33:04,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:33:04,896 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-09-25 12:33:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:04,993 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-09-25 12:33:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:33:04,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-25 12:33:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:04,995 INFO L225 Difference]: With dead ends: 52 [2020-09-25 12:33:04,995 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:33:04,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:33:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:33:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-09-25 12:33:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 12:33:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 12:33:05,005 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2020-09-25 12:33:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:05,006 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 12:33:05,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:33:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 12:33:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 12:33:05,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:05,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:33:05,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:33:05,008 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:05,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:05,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1151527866, now seen corresponding path program 1 times [2020-09-25 12:33:05,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:05,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882009049] [2020-09-25 12:33:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:05,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:05,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:33:05,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:33:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 12:33:05,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:05,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:33:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:33:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:33:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:05,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:05,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:05,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:05,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:33:05,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:05,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:05,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:33:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:33:05,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882009049] [2020-09-25 12:33:05,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:33:05,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:33:05,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987779604] [2020-09-25 12:33:05,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:33:05,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:05,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:33:05,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:33:05,431 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-25 12:33:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:05,557 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-09-25 12:33:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:33:05,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-25 12:33:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:05,560 INFO L225 Difference]: With dead ends: 44 [2020-09-25 12:33:05,560 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 12:33:05,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:33:05,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 12:33:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-09-25 12:33:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 12:33:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-09-25 12:33:05,581 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-09-25 12:33:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:05,582 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-09-25 12:33:05,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:33:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-09-25 12:33:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 12:33:05,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:33:05,584 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, 1, 1, 1, 1] [2020-09-25 12:33:05,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:33:05,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:33:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:33:05,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2086501752, now seen corresponding path program 1 times [2020-09-25 12:33:05,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:33:05,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822901791] [2020-09-25 12:33:05,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:33:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:05,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:05,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:05,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:33:05,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 12:33:05,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:05,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:33:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:33:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:33:05,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:05,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:33:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:05,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:05,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:33:05,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:33:05,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:05,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:33:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:33:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:33:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:33:05,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:33:05,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:33:05,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:33:05,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:33:05,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:33:05,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:33:05,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:33:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:33:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:33:05,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:33:05,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:33:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:33:05,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822901791] [2020-09-25 12:33:05,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:33:05,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:33:05,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933680015] [2020-09-25 12:33:05,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:33:05,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:33:05,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:33:05,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:33:05,781 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 6 states. [2020-09-25 12:33:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:33:05,866 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-09-25 12:33:05,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:33:05,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-25 12:33:05,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:33:05,867 INFO L225 Difference]: With dead ends: 43 [2020-09-25 12:33:05,868 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:33:05,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:33:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:33:05,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:33:05,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:33:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:33:05,869 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-25 12:33:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:33:05,870 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:33:05,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:33:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:33:05,870 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:33:05,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:33:05,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:33:06,056 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 12:33:06,057 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:33:06,057 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:33:06,057 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:33:06,057 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:33:06,058 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:33:06,058 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:33:06,058 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:33:06,058 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 12:33:06,058 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 12:33:06,058 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 12:33:06,059 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-25 12:33:06,059 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (or (<= main_~m~0 0) (and (<= 1 main_~x~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)))) [2020-09-25 12:33:06,059 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 12:33:06,059 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 12:33:06,060 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= main_~m~0 0)) (.cse1 (<= 1 main_~x~0))) (or (and .cse0 (= main_~x~0 0)) (and .cse1 .cse0) (and .cse1 (<= 1 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))))) [2020-09-25 12:33:06,060 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 22) the Hoare annotation is: (or (and (<= 1 main_~x~0) (<= 1 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))) (and (<= 0 main_~m~0) (<= main_~m~0 0))) [2020-09-25 12:33:06,060 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-09-25 12:33:06,060 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-25 12:33:06,061 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 12:33:06,061 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 12:33:06,061 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2020-09-25 12:33:06,061 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 12:33:06,061 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 12:33:06,062 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 12:33:06,062 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 12:33:06,062 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-25 12:33:06,062 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 20) no Hoare annotation was computed. [2020-09-25 12:33:06,062 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 12:33:06,063 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 12:33:06,063 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 12:33:06,063 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 12:33:06,063 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 12:33:06,063 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 12:33:06,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:33:06 BoogieIcfgContainer [2020-09-25 12:33:06,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:33:06,092 INFO L168 Benchmark]: Toolchain (without parser) took 3528.56 ms. Allocated memory was 147.3 MB in the beginning and 233.8 MB in the end (delta: 86.5 MB). Free memory was 103.8 MB in the beginning and 111.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:06,093 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:33:06,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.27 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:06,095 INFO L168 Benchmark]: Boogie Preprocessor took 130.93 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 93.6 MB in the beginning and 183.4 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:06,096 INFO L168 Benchmark]: RCFGBuilder took 334.57 ms. Allocated memory is still 203.4 MB. Free memory was 183.4 MB in the beginning and 169.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:06,097 INFO L168 Benchmark]: TraceAbstraction took 2729.67 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 168.7 MB in the beginning and 111.2 MB in the end (delta: 57.6 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:06,102 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.27 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.93 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 93.6 MB in the beginning and 183.4 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.57 ms. Allocated memory is still 203.4 MB. Free memory was 183.4 MB in the beginning and 169.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2729.67 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 168.7 MB in the beginning and 111.2 MB in the end (delta: 57.6 MB). Peak memory consumption was 88.0 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: 17]: Loop Invariant Derived loop invariant: ((m == 0 && x == 0) || (1 <= x && m == 0)) || ((1 <= x && 1 <= m) && (n <= 0 || m < n)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 81 SDslu, 394 SDs, 0 SdLazy, 138 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 71 HoareAnnotationTreeSize, 15 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 5619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 13/17 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...