/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_while_int.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:49:45,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:49:45,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:49:45,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:49:45,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:49:45,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:49:45,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:49:45,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:49:45,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:49:45,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:49:45,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:49:45,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:49:45,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:49:45,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:49:45,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:49:45,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:49:45,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:49:45,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:49:45,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:49:45,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:49:45,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:49:45,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:49:45,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:49:45,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:49:45,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:49:45,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:49:45,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:49:45,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:49:45,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:49:45,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:49:45,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:49:45,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:49:45,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:49:45,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:49:45,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:49:45,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:49:45,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:49:45,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:49:45,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:49:45,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:49:45,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:49:45,777 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 07:49:45,803 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:49:45,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:49:45,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:49:45,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:49:45,805 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:49:45,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:49:45,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:49:45,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:49:45,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:49:45,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:49:45,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:49:45,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:49:45,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:49:45,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:49:45,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:49:45,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:49:45,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:49:45,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:49:45,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:49:45,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:49:45,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:49:45,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:49:45,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:49:45,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:49:45,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:49:45,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:49:45,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:49:45,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:49:45,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:49:45,810 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:49:46,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:49:46,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:49:46,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:49:46,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:49:46,352 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:49:46,354 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-09-25 07:49:46,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05e866be6/8cc3d57823e94242907c9921757bfe28/FLAG5d4be8a84 [2020-09-25 07:49:47,032 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:49:47,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-09-25 07:49:47,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05e866be6/8cc3d57823e94242907c9921757bfe28/FLAG5d4be8a84 [2020-09-25 07:49:47,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05e866be6/8cc3d57823e94242907c9921757bfe28 [2020-09-25 07:49:47,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:49:47,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:49:47,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:49:47,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:49:47,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:49:47,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:49:47" (1/1) ... [2020-09-25 07:49:47,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b532f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47, skipping insertion in model container [2020-09-25 07:49:47,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:49:47" (1/1) ... [2020-09-25 07:49:47,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:49:47,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:49:47,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:49:47,662 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:49:47,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:49:47,693 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:49:47,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47 WrapperNode [2020-09-25 07:49:47,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:49:47,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:49:47,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:49:47,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:49:47,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47" (1/1) ... [2020-09-25 07:49:47,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47" (1/1) ... [2020-09-25 07:49:47,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47" (1/1) ... [2020-09-25 07:49:47,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47" (1/1) ... [2020-09-25 07:49:47,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47" (1/1) ... [2020-09-25 07:49:47,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47" (1/1) ... [2020-09-25 07:49:47,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47" (1/1) ... [2020-09-25 07:49:47,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:49:47,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:49:47,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:49:47,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:49:47,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47" (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 07:49:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:49:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:49:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 07:49:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2020-09-25 07:49:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:49:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:49:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 07:49:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2020-09-25 07:49:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:49:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:49:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:49:48,095 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:49:48,095 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:49:48,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:49:48 BoogieIcfgContainer [2020-09-25 07:49:48,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:49:48,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:49:48,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:49:48,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:49:48,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:49:47" (1/3) ... [2020-09-25 07:49:48,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab45d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:49:48, skipping insertion in model container [2020-09-25 07:49:48,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:49:47" (2/3) ... [2020-09-25 07:49:48,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab45d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:49:48, skipping insertion in model container [2020-09-25 07:49:48,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:49:48" (3/3) ... [2020-09-25 07:49:48,110 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2020-09-25 07:49:48,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:49:48,134 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:49:48,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:49:48,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:49:48,196 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:49:48,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:49:48,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:49:48,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:49:48,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:49:48,197 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:49:48,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:49:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 07:49:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 07:49:48,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:48,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:48,241 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:48,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:48,252 INFO L82 PathProgramCache]: Analyzing trace with hash -459927168, now seen corresponding path program 1 times [2020-09-25 07:49:48,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:48,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357810314] [2020-09-25 07:49:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:48,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:48,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:48,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:49:48,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 07:49:48,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:48,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:49:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:49:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:49:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:49:48,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:48,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:48,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:48,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:49:48,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:48,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:49:48,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:48,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:48,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:48,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:48,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:48,713 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 07:49:48,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357810314] [2020-09-25 07:49:48,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:49:48,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:49:48,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635282590] [2020-09-25 07:49:48,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:49:48,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:48,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:49:48,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:49:48,746 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 7 states. [2020-09-25 07:49:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:48,949 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-09-25 07:49:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:49:48,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-25 07:49:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:48,963 INFO L225 Difference]: With dead ends: 53 [2020-09-25 07:49:48,963 INFO L226 Difference]: Without dead ends: 29 [2020-09-25 07:49:48,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:49:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-25 07:49:49,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-09-25 07:49:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 07:49:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-25 07:49:49,022 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 14 [2020-09-25 07:49:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:49,023 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-25 07:49:49,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:49:49,023 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-25 07:49:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 07:49:49,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:49,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:49,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:49:49,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:49,026 INFO L82 PathProgramCache]: Analyzing trace with hash 299235803, now seen corresponding path program 1 times [2020-09-25 07:49:49,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:49,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435756042] [2020-09-25 07:49:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:49,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:49,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:49:49,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 07:49:49,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:49,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:49:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:49:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:49:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:49,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:49,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:49:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:49:49,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:49,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:49,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:49:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:49,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:49,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 07:49:49,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:49:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:49,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:49:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:49:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:49,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:49:49,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435756042] [2020-09-25 07:49:49,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:49,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:49:49,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032549869] [2020-09-25 07:49:49,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:49:49,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:49,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:49:49,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:49:49,444 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-09-25 07:49:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:49,580 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-09-25 07:49:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:49:49,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-25 07:49:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:49,582 INFO L225 Difference]: With dead ends: 41 [2020-09-25 07:49:49,583 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 07:49:49,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:49:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 07:49:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-09-25 07:49:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 07:49:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-25 07:49:49,594 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2020-09-25 07:49:49,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:49,595 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-25 07:49:49,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:49:49,596 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-25 07:49:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 07:49:49,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:49,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:49,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:49:49,598 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:49,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1072281632, now seen corresponding path program 2 times [2020-09-25 07:49:49,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:49,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728873110] [2020-09-25 07:49:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:49:49,616 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:49:49,616 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:49:49,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:49:49,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:49:49 BoogieIcfgContainer [2020-09-25 07:49:49,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:49:49,648 INFO L168 Benchmark]: Toolchain (without parser) took 2261.86 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 101.9 MB in the beginning and 88.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2020-09-25 07:49:49,649 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:49:49,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.31 ms. Allocated memory is still 145.2 MB. Free memory was 101.2 MB in the beginning and 91.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 07:49:49,651 INFO L168 Benchmark]: Boogie Preprocessor took 117.83 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 91.9 MB in the beginning and 180.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-25 07:49:49,652 INFO L168 Benchmark]: RCFGBuilder took 287.58 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 168.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:49:49,653 INFO L168 Benchmark]: TraceAbstraction took 1542.17 ms. Allocated memory is still 200.8 MB. Free memory was 167.7 MB in the beginning and 88.6 MB in the end (delta: 79.1 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-09-25 07:49:49,657 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.31 ms. Allocated memory is still 145.2 MB. Free memory was 101.2 MB in the beginning and 91.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.83 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 91.9 MB in the beginning and 180.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 287.58 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 168.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1542.17 ms. Allocated memory is still 200.8 MB. Free memory was 167.7 MB in the beginning and 88.6 MB in the end (delta: 79.1 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int i=0; [L24] COND TRUE i<5 [L25] i++ [L29] CALL check_error(i!=3) [L18] (b) ? (0) : __blast_assert () [L29] RET check_error(i!=3) [L24] COND TRUE i<5 [L25] i++ [L29] CALL check_error(i!=3) [L18] (b) ? (0) : __blast_assert () [L29] RET check_error(i!=3) [L24] COND TRUE i<5 [L25] i++ [L29] CALL check_error(i!=3) [L18] (b) ? (0) : __blast_assert () [L18] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 23 SDslu, 112 SDs, 0 SdLazy, 82 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...