/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/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:27:34,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:27:34,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:27:34,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:27:34,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:27:34,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:27:34,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:27:34,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:27:34,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:27:34,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:27:34,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:27:34,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:27:34,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:27:34,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:27:34,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:27:34,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:27:34,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:27:34,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:27:34,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:27:34,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:27:34,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:27:34,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:27:34,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:27:34,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:27:34,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:27:34,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:27:34,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:27:34,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:27:34,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:27:34,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:27:34,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:27:34,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:27:34,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:27:34,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:27:34,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:27:34,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:27:34,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:27:34,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:27:34,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:27:34,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:27:34,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:27:34,702 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 13:27:34,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:27:34,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:27:34,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:27:34,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:27:34,752 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:27:34,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:27:34,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:27:34,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:27:34,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:27:34,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:27:34,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:27:34,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:27:34,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:27:34,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:27:34,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:27:34,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:27:34,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:27:34,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:27:34,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:27:34,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:27:34,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:27:34,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:27:34,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:27:34,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:27:34,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:27:34,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:27:34,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:27:34,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:27:34,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:27:34,759 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 13:27:35,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:27:35,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:27:35,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:27:35,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:27:35,345 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:27:35,347 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-09-25 13:27:35,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acfd26470/a551d2a580c044ea98dc958a5d193b8e/FLAGc22bb2595 [2020-09-25 13:27:35,944 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:27:35,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-09-25 13:27:35,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acfd26470/a551d2a580c044ea98dc958a5d193b8e/FLAGc22bb2595 [2020-09-25 13:27:36,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acfd26470/a551d2a580c044ea98dc958a5d193b8e [2020-09-25 13:27:36,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:27:36,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:27:36,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:27:36,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:27:36,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:27:36,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:27:36" (1/1) ... [2020-09-25 13:27:36,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4231a4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36, skipping insertion in model container [2020-09-25 13:27:36,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:27:36" (1/1) ... [2020-09-25 13:27:36,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:27:36,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:27:36,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:27:36,572 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:27:36,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:27:36,602 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:27:36,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36 WrapperNode [2020-09-25 13:27:36,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:27:36,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:27:36,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:27:36,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:27:36,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36" (1/1) ... [2020-09-25 13:27:36,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36" (1/1) ... [2020-09-25 13:27:36,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36" (1/1) ... [2020-09-25 13:27:36,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36" (1/1) ... [2020-09-25 13:27:36,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36" (1/1) ... [2020-09-25 13:27:36,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36" (1/1) ... [2020-09-25 13:27:36,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36" (1/1) ... [2020-09-25 13:27:36,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:27:36,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:27:36,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:27:36,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:27:36,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36" (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 13:27:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:27:36,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:27:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 13:27:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:27:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:27:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 13:27:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:27:36,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:27:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:27:36,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:27:36,958 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:27:36,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:27:36 BoogieIcfgContainer [2020-09-25 13:27:36,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:27:36,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:27:36,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:27:36,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:27:36,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:27:36" (1/3) ... [2020-09-25 13:27:36,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45037e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:27:36, skipping insertion in model container [2020-09-25 13:27:36,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:27:36" (2/3) ... [2020-09-25 13:27:36,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45037e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:27:36, skipping insertion in model container [2020-09-25 13:27:36,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:27:36" (3/3) ... [2020-09-25 13:27:36,974 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-09-25 13:27:36,985 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:27:36,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:27:37,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:27:37,041 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:27:37,041 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:27:37,041 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:27:37,042 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:27:37,042 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:27:37,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:27:37,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:27:37,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:27:37,063 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-09-25 13:27:37,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-25 13:27:37,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:37,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:37,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:37,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1077921841, now seen corresponding path program 1 times [2020-09-25 13:27:37,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:37,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156270270] [2020-09-25 13:27:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:27:37,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 13:27:37,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:27:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:27:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 13:27:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:27:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:27:37,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:27:37,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:37,319 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 13:27:37,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156270270] [2020-09-25 13:27:37,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:27:37,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:27:37,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436637905] [2020-09-25 13:27:37,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:27:37,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:37,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:27:37,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:27:37,391 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2020-09-25 13:27:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:37,437 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-09-25 13:27:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:27:37,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-25 13:27:37,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:37,453 INFO L225 Difference]: With dead ends: 31 [2020-09-25 13:27:37,454 INFO L226 Difference]: Without dead ends: 13 [2020-09-25 13:27:37,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:27:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-09-25 13:27:37,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-09-25 13:27:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-09-25 13:27:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-09-25 13:27:37,509 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2020-09-25 13:27:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:37,510 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-09-25 13:27:37,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:27:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-09-25 13:27:37,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 13:27:37,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:27:37,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:27:37,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:27:37,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:27:37,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:27:37,512 INFO L82 PathProgramCache]: Analyzing trace with hash -798013776, now seen corresponding path program 1 times [2020-09-25 13:27:37,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:27:37,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64256383] [2020-09-25 13:27:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:27:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:27:37,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:27:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 13:27:37,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:27:37,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:27:37,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:27:37,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:27:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:27:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:27:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:27:37,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:27:37,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:27:37,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:27:37,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:27:37,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:27:37,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:27:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:27:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:27:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:27:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:37,710 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 13:27:37,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64256383] [2020-09-25 13:27:37,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:27:37,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:27:37,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216923323] [2020-09-25 13:27:37,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:27:37,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:37,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:27:37,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:27:37,715 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 4 states. [2020-09-25 13:27:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:27:37,751 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-09-25 13:27:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:27:37,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-25 13:27:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:27:37,753 INFO L225 Difference]: With dead ends: 13 [2020-09-25 13:27:37,753 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:27:37,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:27:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:27:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:27:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:27:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:27:37,756 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-25 13:27:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:27:37,756 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:27:37,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:27:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:27:37,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:27:37,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:27:37,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:27:37,797 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 13:27:37,798 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:27:37,798 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-25 13:27:37,798 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-09-25 13:27:37,798 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-09-25 13:27:37,799 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-09-25 13:27:37,799 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:27:37,799 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 13:27:37,799 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 13:27:37,799 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:27:37,800 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-09-25 13:27:37,800 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-09-25 13:27:37,800 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 13:27:37,800 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 13:27:37,800 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-09-25 13:27:37,800 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 13:27:37,800 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-25 13:27:37,801 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 13:27:37,801 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-09-25 13:27:37,801 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-25 13:27:37,801 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 20) no Hoare annotation was computed. [2020-09-25 13:27:37,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:27:37 BoogieIcfgContainer [2020-09-25 13:27:37,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:27:37,812 INFO L168 Benchmark]: Toolchain (without parser) took 1505.47 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 102.7 MB in the beginning and 128.2 MB in the end (delta: -25.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:37,813 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-25 13:27:37,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.76 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 93.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:37,815 INFO L168 Benchmark]: Boogie Preprocessor took 30.17 ms. Allocated memory is still 145.8 MB. Free memory was 93.0 MB in the beginning and 91.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:37,816 INFO L168 Benchmark]: RCFGBuilder took 328.85 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.3 MB in the beginning and 170.8 MB in the end (delta: -79.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:37,817 INFO L168 Benchmark]: TraceAbstraction took 844.04 ms. Allocated memory is still 202.4 MB. Free memory was 170.8 MB in the beginning and 128.2 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:27:37,822 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.0 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.76 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 93.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.17 ms. Allocated memory is still 145.8 MB. Free memory was 93.0 MB in the beginning and 91.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 328.85 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.3 MB in the beginning and 170.8 MB in the end (delta: -79.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 844.04 ms. Allocated memory is still 202.4 MB. Free memory was 170.8 MB in the beginning and 128.2 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 20 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 374 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...