/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/test_while_int.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:20:10,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:20:10,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:20:10,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:20:10,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:20:10,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:20:10,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:20:10,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:20:10,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:20:10,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:20:10,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:20:10,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:20:10,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:20:10,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:20:10,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:20:10,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:20:10,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:20:10,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:20:10,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:20:10,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:20:10,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:20:10,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:20:10,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:20:10,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:20:10,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:20:10,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:20:10,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:20:10,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:20:10,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:20:10,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:20:10,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:20:10,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:20:10,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:20:10,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:20:10,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:20:10,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:20:10,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:20:10,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:20:10,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:20:10,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:20:10,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:20:10,685 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 [2020-10-29 09:20:10,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:20:10,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:20:10,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:20:10,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:20:10,740 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:20:10,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:20:10,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:20:10,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:20:10,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:20:10,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:20:10,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:20:10,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:20:10,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:20:10,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:20:10,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:20:10,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:20:10,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:20:10,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:20:10,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:20:10,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:20:10,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:20:10,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:20:10,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:20:10,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:20:10,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:20:10,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:20:10,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:20:10,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:20:10,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:20:10,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:20:11,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:20:11,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:20:11,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:20:11,161 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:20:11,162 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:20:11,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-10-29 09:20:11,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a02ba72ff/ec0a2220189745b384818e239cee3344/FLAGca517f9d7 [2020-10-29 09:20:11,860 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:20:11,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-10-29 09:20:11,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a02ba72ff/ec0a2220189745b384818e239cee3344/FLAGca517f9d7 [2020-10-29 09:20:12,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a02ba72ff/ec0a2220189745b384818e239cee3344 [2020-10-29 09:20:12,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:20:12,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:20:12,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:20:12,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:20:12,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:20:12,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:20:12" (1/1) ... [2020-10-29 09:20:12,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be471ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12, skipping insertion in model container [2020-10-29 09:20:12,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:20:12" (1/1) ... [2020-10-29 09:20:12,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:20:12,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:20:12,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:20:12,450 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:20:12,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:20:12,483 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:20:12,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12 WrapperNode [2020-10-29 09:20:12,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:20:12,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:20:12,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:20:12,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:20:12,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12" (1/1) ... [2020-10-29 09:20:12,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12" (1/1) ... [2020-10-29 09:20:12,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12" (1/1) ... [2020-10-29 09:20:12,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12" (1/1) ... [2020-10-29 09:20:12,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12" (1/1) ... [2020-10-29 09:20:12,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12" (1/1) ... [2020-10-29 09:20:12,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12" (1/1) ... [2020-10-29 09:20:12,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:20:12,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:20:12,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:20:12,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:20:12,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12" (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 [2020-10-29 09:20:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:20:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:20:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:20:12,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-29 09:20:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2020-10-29 09:20:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:20:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:20:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:20:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:20:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:20:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-29 09:20:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2020-10-29 09:20:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:20:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:20:12,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:20:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:20:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:20:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:20:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:20:12,869 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:20:12,870 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:20:12,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:20:12 BoogieIcfgContainer [2020-10-29 09:20:12,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:20:12,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:20:12,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:20:12,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:20:12,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:20:12" (1/3) ... [2020-10-29 09:20:12,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0d77b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:20:12, skipping insertion in model container [2020-10-29 09:20:12,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:20:12" (2/3) ... [2020-10-29 09:20:12,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0d77b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:20:12, skipping insertion in model container [2020-10-29 09:20:12,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:20:12" (3/3) ... [2020-10-29 09:20:12,882 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2020-10-29 09:20:12,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:20:12,902 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:20:12,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:20:12,953 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:20:12,953 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:20:12,954 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:20:12,954 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:20:12,954 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:20:12,954 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:20:12,954 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:20:12,955 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:20:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-29 09:20:12,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:20:12,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:20:12,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:20:12,987 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:20:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:20:12,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1657195269, now seen corresponding path program 1 times [2020-10-29 09:20:13,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:20:13,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330289284] [2020-10-29 09:20:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:20:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:13,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:13,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:13,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:20:13,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-29 09:20:13,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:13,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:13,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:20:13,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:20:13,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:20:13,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:20:13,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:20:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:13,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:13,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:13,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:20:13,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:13,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:20:13,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:13,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:20:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:20:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:20:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:20:13,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330289284] [2020-10-29 09:20:13,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:20:13,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:20:13,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985794322] [2020-10-29 09:20:13,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:20:13,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:20:13,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:20:13,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:20:13,750 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2020-10-29 09:20:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:20:14,130 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-10-29 09:20:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:20:14,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-29 09:20:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:20:14,143 INFO L225 Difference]: With dead ends: 48 [2020-10-29 09:20:14,144 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 09:20:14,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:20:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 09:20:14,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-29 09:20:14,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 09:20:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-29 09:20:14,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-10-29 09:20:14,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:20:14,219 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-29 09:20:14,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:20:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-29 09:20:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:20:14,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:20:14,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:20:14,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:20:14,223 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:20:14,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:20:14,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1579769012, now seen corresponding path program 1 times [2020-10-29 09:20:14,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:20:14,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190619884] [2020-10-29 09:20:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:20:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:14,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:14,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:20:14,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:14,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 09:20:14,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:14,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:20:14,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:20:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:20:14,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:20:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:20:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:14,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:14,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:20:14,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:20:14,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:14,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:20:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:20:14,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:20:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:20:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:20:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:20:14,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:20:14,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:20:14,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:20:14,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:20:14,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:20:14,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:20:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:20:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:20:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:20:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:20:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:20:14,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190619884] [2020-10-29 09:20:14,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:20:14,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:20:14,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026610298] [2020-10-29 09:20:14,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:20:14,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:20:14,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:20:14,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:20:14,716 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2020-10-29 09:20:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:20:14,987 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-29 09:20:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:20:14,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-29 09:20:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:20:14,989 INFO L225 Difference]: With dead ends: 33 [2020-10-29 09:20:14,989 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 09:20:14,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:20:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 09:20:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-29 09:20:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 09:20:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-10-29 09:20:15,001 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 19 [2020-10-29 09:20:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:20:15,001 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-10-29 09:20:15,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:20:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-10-29 09:20:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:20:15,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:20:15,003 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:20:15,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:20:15,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:20:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:20:15,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1493020451, now seen corresponding path program 2 times [2020-10-29 09:20:15,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:20:15,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811755931] [2020-10-29 09:20:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:20:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:20:15,022 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:20:15,023 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:20:15,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:20:15,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:20:15 BoogieIcfgContainer [2020-10-29 09:20:15,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:20:15,048 INFO L168 Benchmark]: Toolchain (without parser) took 2809.87 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 101.5 MB in the beginning and 121.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:20:15,049 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:20:15,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.90 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 91.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:20:15,051 INFO L168 Benchmark]: Boogie Preprocessor took 36.64 ms. Allocated memory is still 125.8 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:20:15,052 INFO L168 Benchmark]: RCFGBuilder took 349.19 ms. Allocated memory is still 125.8 MB. Free memory was 90.3 MB in the beginning and 78.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:20:15,053 INFO L168 Benchmark]: TraceAbstraction took 2171.54 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 77.7 MB in the beginning and 121.9 MB in the end (delta: -44.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:20:15,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 239.90 ms. Allocated memory is still 125.8 MB. Free memory was 100.8 MB in the beginning and 91.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.64 ms. Allocated memory is still 125.8 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.19 ms. Allocated memory is still 125.8 MB. Free memory was 90.3 MB in the beginning and 78.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2171.54 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 77.7 MB in the beginning and 121.9 MB in the end (delta: -44.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L25] int i=0; [L26] COND TRUE i<5 [L27] i++ [L31] CALL check_error(i!=3) [L20] (b) ? (0) : __blast_assert () [L31] RET check_error(i!=3) [L26] COND TRUE i<5 [L27] i++ [L31] CALL check_error(i!=3) [L20] (b) ? (0) : __blast_assert () [L31] RET check_error(i!=3) [L26] COND TRUE i<5 [L27] i++ [L31] CALL check_error(i!=3) [L20] (b) ? (0) : __blast_assert () [L20] CALL __blast_assert () [L8] CALL reach_error() [L3] __assert_fail("0", "test_while_int.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 34 SDslu, 60 SDs, 0 SdLazy, 100 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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...