/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:39:26,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:39:26,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:39:26,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:39:26,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:39:26,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:39:26,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:39:26,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:39:26,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:39:26,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:39:26,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:39:26,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:39:26,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:39:26,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:39:26,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:39:26,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:39:26,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:39:26,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:39:26,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:39:26,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:39:26,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:39:26,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:39:26,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:39:26,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:39:26,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:39:26,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:39:26,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:39:26,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:39:26,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:39:26,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:39:26,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:39:26,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:39:26,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:39:26,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:39:26,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:39:26,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:39:26,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:39:26,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:39:26,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:39:26,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:39:26,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:39:26,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:39:26,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:39:26,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:39:26,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:39:26,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:39:26,657 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:39:26,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:39:26,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:39:26,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:39:26,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:39:26,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:39:26,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:39:26,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:39:26,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:39:26,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:39:26,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:39:26,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:39:26,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:39:26,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:39:26,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:39:26,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:39:26,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:39:26,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:39:26,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:39:26,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:39:26,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:39:26,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:39:26,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:39:26,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:39:26,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:39:26,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:39:27,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:39:27,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:39:27,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:39:27,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:39:27,147 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:39:27,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-25 13:39:27,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8818da68/10a5eb57a68a4a23a15df3c82e301c8b/FLAG75cec9ad9 [2020-09-25 13:39:27,780 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:39:27,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-25 13:39:27,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8818da68/10a5eb57a68a4a23a15df3c82e301c8b/FLAG75cec9ad9 [2020-09-25 13:39:28,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8818da68/10a5eb57a68a4a23a15df3c82e301c8b [2020-09-25 13:39:28,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:39:28,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:39:28,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:28,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:39:28,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:39:28,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:28" (1/1) ... [2020-09-25 13:39:28,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a5289c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28, skipping insertion in model container [2020-09-25 13:39:28,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:28" (1/1) ... [2020-09-25 13:39:28,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:39:28,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:39:28,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:28,396 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:39:28,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:28,427 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:39:28,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28 WrapperNode [2020-09-25 13:39:28,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:28,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:39:28,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:39:28,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:39:28,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28" (1/1) ... [2020-09-25 13:39:28,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28" (1/1) ... [2020-09-25 13:39:28,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28" (1/1) ... [2020-09-25 13:39:28,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28" (1/1) ... [2020-09-25 13:39:28,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28" (1/1) ... [2020-09-25 13:39:28,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28" (1/1) ... [2020-09-25 13:39:28,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28" (1/1) ... [2020-09-25 13:39:28,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:39:28,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:39:28,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:39:28,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:39:28,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:39:28,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:39:28,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:39:28,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:39:28,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:39:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:39:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 13:39:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:39:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:39:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:39:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:39:28,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:39:28,840 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:39:28,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:28 BoogieIcfgContainer [2020-09-25 13:39:28,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:39:28,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:39:28,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:39:28,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:39:28,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:39:28" (1/3) ... [2020-09-25 13:39:28,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eb1f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:28, skipping insertion in model container [2020-09-25 13:39:28,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:28" (2/3) ... [2020-09-25 13:39:28,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eb1f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:28, skipping insertion in model container [2020-09-25 13:39:28,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:28" (3/3) ... [2020-09-25 13:39:28,888 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2020-09-25 13:39:28,917 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:39:28,942 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:39:28,966 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:39:28,998 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:39:28,998 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:39:28,998 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:39:28,998 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:39:28,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:39:28,999 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:39:28,999 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:39:28,999 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:39:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 13:39:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 13:39:29,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:29,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:29,027 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash 677098305, now seen corresponding path program 1 times [2020-09-25 13:39:29,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:29,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609983944] [2020-09-25 13:39:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:29,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:29,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:29,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:29,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:39:29,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 13:39:29,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:29,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:39:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:39:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:39:29,554 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2020-09-25 13:39:29,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:29,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:29,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:39:29,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:29,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:29,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609983944] [2020-09-25 13:39:29,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:29,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:39:29,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848371056] [2020-09-25 13:39:29,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:39:29,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:29,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:39:29,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:39:29,648 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 13:39:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:29,802 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-09-25 13:39:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:39:29,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-25 13:39:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:29,820 INFO L225 Difference]: With dead ends: 46 [2020-09-25 13:39:29,821 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 13:39:29,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:39:29,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 13:39:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-09-25 13:39:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-25 13:39:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-09-25 13:39:29,886 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2020-09-25 13:39:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:29,888 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-09-25 13:39:29,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:39:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-09-25 13:39:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 13:39:29,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:29,891 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 13:39:29,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:39:29,892 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:29,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1021038377, now seen corresponding path program 1 times [2020-09-25 13:39:29,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:29,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44594725] [2020-09-25 13:39:29,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:30,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:30,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 13:39:30,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:30,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-09-25 13:39:30,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:30,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:39:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:39:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:39:30,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:30,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:30,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:30,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:30,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:30,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:39:30,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:30,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:30,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:30,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:30,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:30,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44594725] [2020-09-25 13:39:30,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:30,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:39:30,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214871360] [2020-09-25 13:39:30,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:39:30,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:30,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:39:30,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:39:30,574 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2020-09-25 13:39:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:30,714 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-09-25 13:39:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:39:30,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-25 13:39:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:30,715 INFO L225 Difference]: With dead ends: 20 [2020-09-25 13:39:30,715 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:39:30,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:39:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:39:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:39:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:39:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:39:30,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-25 13:39:30,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:30,718 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:39:30,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:39:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:39:30,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:39:30,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:39:30,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:39:30,783 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 13:39:30,784 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:39:30,784 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:39:30,784 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 13:39:30,784 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 13:39:30,785 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:39:30,785 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2020-09-25 13:39:30,785 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2020-09-25 13:39:30,785 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 13:39:30,785 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 13:39:30,786 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 13:39:30,786 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 13:39:30,786 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 13:39:30,786 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 13:39:30,786 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 13:39:30,787 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-09-25 13:39:30,787 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2020-09-25 13:39:30,787 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 13:39:30,788 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 18) the Hoare annotation is: (let ((.cse1 (* 4294967296 (div main_~x~0 4294967296))) (.cse0 (+ main_~x~0 (* 4294967296 (div main_~y~0 4294967296))))) (and (< .cse0 (+ main_~y~0 .cse1 1)) (<= (+ main_~y~0 .cse1) .cse0) (<= main_~y~0 main_~x~0))) [2020-09-25 13:39:30,788 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-25 13:39:30,788 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-25 13:39:30,788 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 13:39:30,788 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-25 13:39:30,789 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-25 13:39:30,789 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-25 13:39:30,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:39:30 BoogieIcfgContainer [2020-09-25 13:39:30,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:39:30,814 INFO L168 Benchmark]: Toolchain (without parser) took 2704.38 ms. Allocated memory was 147.8 MB in the beginning and 233.3 MB in the end (delta: 85.5 MB). Free memory was 104.6 MB in the beginning and 180.4 MB in the end (delta: -75.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:39:30,816 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:39:30,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.74 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 94.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:39:30,818 INFO L168 Benchmark]: Boogie Preprocessor took 118.45 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 94.7 MB in the beginning and 184.5 MB in the end (delta: -89.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-25 13:39:30,819 INFO L168 Benchmark]: RCFGBuilder took 299.18 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 171.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 13:39:30,820 INFO L168 Benchmark]: TraceAbstraction took 1949.40 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 171.3 MB in the beginning and 180.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:39:30,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.74 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 94.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.45 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 94.7 MB in the beginning and 184.5 MB in the end (delta: -89.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.18 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 171.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1949.40 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 171.3 MB in the beginning and 180.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 15]: Loop Invariant Derived loop invariant: y == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 17 SDslu, 101 SDs, 0 SdLazy, 72 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 43 HoareAnnotationTreeSize, 9 FomulaSimplifications, 39 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3815 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 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...