/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:06:34,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:06:34,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:06:34,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:06:34,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:06:34,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:06:34,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:06:34,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:06:34,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:06:34,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:06:34,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:06:34,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:06:34,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:06:34,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:06:34,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:06:34,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:06:34,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:06:34,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:06:34,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:06:34,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:06:34,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:06:34,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:06:34,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:06:34,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:06:35,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:06:35,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:06:35,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:06:35,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:06:35,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:06:35,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:06:35,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:06:35,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:06:35,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:06:35,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:06:35,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:06:35,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:06:35,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:06:35,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:06:35,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:06:35,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:06:35,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:06:35,031 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 00:06:35,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:06:35,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:06:35,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:06:35,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:06:35,059 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:06:35,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:06:35,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:06:35,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:06:35,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:06:35,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:06:35,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:06:35,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:06:35,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:06:35,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:06:35,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:06:35,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:06:35,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:06:35,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:06:35,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:06:35,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:06:35,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:06:35,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:06:35,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:06:35,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:06:35,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:06:35,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:06:35,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:06:35,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:06:35,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:06:35,064 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:06:35,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:06:35,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:06:35,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:06:35,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:06:35,573 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:06:35,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-25 00:06:35,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa5f3329/0720f6a180ab4fb0858bcdcb9ae5951b/FLAG4c128ea05 [2020-09-25 00:06:36,187 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:06:36,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-09-25 00:06:36,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa5f3329/0720f6a180ab4fb0858bcdcb9ae5951b/FLAG4c128ea05 [2020-09-25 00:06:36,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aa5f3329/0720f6a180ab4fb0858bcdcb9ae5951b [2020-09-25 00:06:36,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:06:36,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:06:36,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:06:36,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:06:36,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:06:36,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:06:36" (1/1) ... [2020-09-25 00:06:36,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36, skipping insertion in model container [2020-09-25 00:06:36,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:06:36" (1/1) ... [2020-09-25 00:06:36,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:06:36,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:06:36,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:06:36,949 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:06:36,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:06:36,995 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:06:36,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36 WrapperNode [2020-09-25 00:06:36,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:06:36,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:06:36,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:06:36,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:06:37,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36" (1/1) ... [2020-09-25 00:06:37,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36" (1/1) ... [2020-09-25 00:06:37,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36" (1/1) ... [2020-09-25 00:06:37,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36" (1/1) ... [2020-09-25 00:06:37,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36" (1/1) ... [2020-09-25 00:06:37,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36" (1/1) ... [2020-09-25 00:06:37,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36" (1/1) ... [2020-09-25 00:06:37,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:06:37,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:06:37,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:06:37,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:06:37,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:06:37,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:06:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:06:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:06:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:06:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:06:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:06:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:06:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:06:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:06:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:06:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:06:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:06:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:06:37,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:06:37,490 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 00:06:37,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:06:37 BoogieIcfgContainer [2020-09-25 00:06:37,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:06:37,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:06:37,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:06:37,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:06:37,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:06:36" (1/3) ... [2020-09-25 00:06:37,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2e230e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:06:37, skipping insertion in model container [2020-09-25 00:06:37,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:06:36" (2/3) ... [2020-09-25 00:06:37,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2e230e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:06:37, skipping insertion in model container [2020-09-25 00:06:37,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:06:37" (3/3) ... [2020-09-25 00:06:37,506 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-09-25 00:06:37,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:06:37,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:06:37,556 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:06:37,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:06:37,621 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:06:37,621 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:06:37,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:06:37,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:06:37,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:06:37,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:06:37,622 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:06:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 00:06:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 00:06:37,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:06:37,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:06:37,672 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:06:37,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:06:37,678 INFO L82 PathProgramCache]: Analyzing trace with hash 177195790, now seen corresponding path program 1 times [2020-09-25 00:06:37,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:06:37,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381536862] [2020-09-25 00:06:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:06:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:37,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:38,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:38,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 00:06:38,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:06:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 00:06:38,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:38,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:06:38,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:06:38,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:06:38,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:06:38,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:06:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:06:38,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:06:38,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:06:38,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:06:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:06:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:06:38,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:06:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:06:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:06:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:06:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:06:38,304 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 00:06:38,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381536862] [2020-09-25 00:06:38,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:06:38,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:06:38,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66088284] [2020-09-25 00:06:38,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:06:38,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:06:38,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:06:38,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:06:38,334 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2020-09-25 00:06:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:06:38,597 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-09-25 00:06:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:06:38,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-25 00:06:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:06:38,610 INFO L225 Difference]: With dead ends: 46 [2020-09-25 00:06:38,610 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:06:38,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:06:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:06:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:06:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:06:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:06:38,649 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-25 00:06:38,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:06:38,650 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:06:38,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:06:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:06:38,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:06:38,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:06:38,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:06:38,709 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:06:38,709 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-09-25 00:06:38,710 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:06:38,710 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:06:38,710 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:06:38,710 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:06:38,710 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:06:38,711 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 7 9) no Hoare annotation was computed. [2020-09-25 00:06:38,711 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 00:06:38,711 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-25 00:06:38,711 INFO L268 CegarLoopResult]: For program point L8-3(lines 7 9) no Hoare annotation was computed. [2020-09-25 00:06:38,711 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2020-09-25 00:06:38,711 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 00:06:38,712 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 18 32) no Hoare annotation was computed. [2020-09-25 00:06:38,712 INFO L268 CegarLoopResult]: For program point L25-1(lines 25 28) no Hoare annotation was computed. [2020-09-25 00:06:38,712 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 00:06:38,712 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 00:06:38,712 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed. [2020-09-25 00:06:38,713 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 29) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-09-25 00:06:38,713 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 00:06:38,713 INFO L264 CegarLoopResult]: At program point L25-5(lines 23 29) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-09-25 00:06:38,713 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 00:06:38,713 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 00:06:38,714 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 18 32) no Hoare annotation was computed. [2020-09-25 00:06:38,714 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 00:06:38,714 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 18 32) the Hoare annotation is: true [2020-09-25 00:06:38,714 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 00:06:38,714 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 00:06:38,715 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 00:06:38,715 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 00:06:38,715 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 00:06:38,715 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 00:06:38,715 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 00:06:38,716 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true [2020-09-25 00:06:38,716 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 00:06:38,716 INFO L268 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-09-25 00:06:38,716 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 15) no Hoare annotation was computed. [2020-09-25 00:06:38,716 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 15) no Hoare annotation was computed. [2020-09-25 00:06:38,717 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-09-25 00:06:38,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:06:38 BoogieIcfgContainer [2020-09-25 00:06:38,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:06:38,745 INFO L168 Benchmark]: Toolchain (without parser) took 2173.20 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.4 MB in the beginning and 110.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:38,746 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:06:38,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.81 ms. Allocated memory is still 138.9 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:38,748 INFO L168 Benchmark]: Boogie Preprocessor took 163.08 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.2 MB in the beginning and 181.2 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:38,749 INFO L168 Benchmark]: RCFGBuilder took 334.46 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 168.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:38,750 INFO L168 Benchmark]: TraceAbstraction took 1243.83 ms. Allocated memory is still 203.4 MB. Free memory was 167.8 MB in the beginning and 110.6 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:06:38,755 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.81 ms. Allocated memory is still 138.9 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.08 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.2 MB in the beginning and 181.2 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.46 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 168.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1243.83 ms. Allocated memory is still 203.4 MB. Free memory was 167.8 MB in the beginning and 110.6 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 23]: Loop Invariant Derived loop invariant: i == i / 3 * 3 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 37 SDslu, 29 SDs, 0 SdLazy, 73 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 21 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 792 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...