/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/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:47:41,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:47:41,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:47:41,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:47:41,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:47:41,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:47:41,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:47:41,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:47:41,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:47:41,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:47:41,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:47:41,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:47:41,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:47:41,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:47:41,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:47:41,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:47:41,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:47:41,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:47:41,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:47:41,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:47:41,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:47:41,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:47:41,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:47:41,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:47:41,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:47:41,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:47:41,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:47:41,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:47:41,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:47:41,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:47:41,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:47:41,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:47:41,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:47:41,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:47:41,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:47:41,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:47:41,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:47:41,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:47:41,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:47:41,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:47:41,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:47:41,718 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 14:47:41,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:47:41,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:47:41,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:47:41,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:47:41,796 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:47:41,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:47:41,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:47:41,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:47:41,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:47:41,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:47:41,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:47:41,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:47:41,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:47:41,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:47:41,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:47:41,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:47:41,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:47:41,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:47:41,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:47:41,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:47:41,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:47:41,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:47:41,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:47:41,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:47:41,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:47:41,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:47:41,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:47:41,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:47:41,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:47:41,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:47:42,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:47:42,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:47:42,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:47:42,310 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:47:42,310 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:47:42,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-10-29 14:47:42,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e002a0585/b438261a45b242d0bc29202f774af570/FLAGbbc6d2384 [2020-10-29 14:47:43,120 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:47:43,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-10-29 14:47:43,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e002a0585/b438261a45b242d0bc29202f774af570/FLAGbbc6d2384 [2020-10-29 14:47:43,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e002a0585/b438261a45b242d0bc29202f774af570 [2020-10-29 14:47:43,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:47:43,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:47:43,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:47:43,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:47:43,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:47:43,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:47:43" (1/1) ... [2020-10-29 14:47:43,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b381535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43, skipping insertion in model container [2020-10-29 14:47:43,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:47:43" (1/1) ... [2020-10-29 14:47:43,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:47:43,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:47:43,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:47:43,724 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:47:43,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:47:43,769 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:47:43,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43 WrapperNode [2020-10-29 14:47:43,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:47:43,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:47:43,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:47:43,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:47:43,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43" (1/1) ... [2020-10-29 14:47:43,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43" (1/1) ... [2020-10-29 14:47:43,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43" (1/1) ... [2020-10-29 14:47:43,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43" (1/1) ... [2020-10-29 14:47:43,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43" (1/1) ... [2020-10-29 14:47:43,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43" (1/1) ... [2020-10-29 14:47:43,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43" (1/1) ... [2020-10-29 14:47:43,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:47:43,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:47:43,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:47:43,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:47:43,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43" (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 14:47:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:47:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:47:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:47:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:47:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 14:47:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 14:47:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:47:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-29 14:47:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 14:47:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 14:47:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:47:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:47:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:47:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:47:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:47:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 14:47:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:47:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:47:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:47:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:47:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 14:47:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-29 14:47:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:47:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:47:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:47:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:47:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:47:44,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:47:44,387 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:47:44,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:47:44 BoogieIcfgContainer [2020-10-29 14:47:44,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:47:44,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:47:44,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:47:44,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:47:44,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:47:43" (1/3) ... [2020-10-29 14:47:44,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601b8cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:47:44, skipping insertion in model container [2020-10-29 14:47:44,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:43" (2/3) ... [2020-10-29 14:47:44,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601b8cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:47:44, skipping insertion in model container [2020-10-29 14:47:44,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:47:44" (3/3) ... [2020-10-29 14:47:44,397 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-10-29 14:47:44,409 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:47:44,414 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:47:44,426 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:47:44,453 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:47:44,454 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:47:44,454 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:47:44,454 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:47:44,454 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:47:44,454 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:47:44,454 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:47:44,455 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:47:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-29 14:47:44,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 14:47:44,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:47:44,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:47:44,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:47:44,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:47:44,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2109147679, now seen corresponding path program 1 times [2020-10-29 14:47:44,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:47:44,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676741962] [2020-10-29 14:47:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:47:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:44,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 14:47:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:47:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-29 14:47:45,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:45,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 14:47:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 14:47:45,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:47:45,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:47:45,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:47:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:45,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:45,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:45,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:47:45,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:45,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:47:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:47:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:45,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:45,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:45,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:45,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:47:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:47:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:45,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 14:47:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 14:47:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:45,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:45,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:45,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:47:45,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:45,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:45,473 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 14:47:45,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676741962] [2020-10-29 14:47:45,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:47:45,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:47:45,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533521751] [2020-10-29 14:47:45,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:47:45,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:47:45,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:47:45,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:47:45,503 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 8 states. [2020-10-29 14:47:46,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:47:46,105 INFO L93 Difference]: Finished difference Result 86 states and 104 transitions. [2020-10-29 14:47:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 14:47:46,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-29 14:47:46,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:47:46,116 INFO L225 Difference]: With dead ends: 86 [2020-10-29 14:47:46,116 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 14:47:46,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:47:46,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 14:47:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 14:47:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 14:47:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-10-29 14:47:46,172 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 25 [2020-10-29 14:47:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:47:46,172 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-10-29 14:47:46,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 14:47:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-10-29 14:47:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 14:47:46,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:47:46,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:47:46,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:47:46,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:47:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:47:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1310958683, now seen corresponding path program 1 times [2020-10-29 14:47:46,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:47:46,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983758326] [2020-10-29 14:47:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:47:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:46,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:46,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:48,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:48,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 14:47:48,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:47:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2724 [2020-10-29 14:47:48,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:48,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 14:47:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 14:47:48,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 14:47:48,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:49,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:47:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:49,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:49,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:49,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:49,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:47:49,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:49,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:49,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:47:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:49,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:49,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:49,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:47:49,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:49,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:49,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 14:47:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:49,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:49,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:49,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:49,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:47:49,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:49,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:47:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 14:47:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:49,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:49,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:49,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:49,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:49,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:47:49,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:49,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:47:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:47:49,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:47:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:49,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:49,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:49,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:49,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:47:49,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:49,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:49,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:47:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 14:47:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:49,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:49,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:49,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:49,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:47:49,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:49,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:47:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 14:47:49,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983758326] [2020-10-29 14:47:49,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:47:49,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 14:47:49,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649020738] [2020-10-29 14:47:49,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:47:49,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:47:49,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:47:49,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:47:49,277 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 12 states. [2020-10-29 14:47:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:47:49,969 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-10-29 14:47:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:47:49,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-29 14:47:49,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:47:49,971 INFO L225 Difference]: With dead ends: 44 [2020-10-29 14:47:49,971 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 14:47:49,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-29 14:47:49,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 14:47:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 14:47:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 14:47:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 14:47:49,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-10-29 14:47:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:47:49,974 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 14:47:49,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 14:47:49,974 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 14:47:49,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 14:47:49,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:47:49,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 14:47:50,439 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2020-10-29 14:47:50,439 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 5) the Hoare annotation is: true [2020-10-29 14:47:50,440 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2020-10-29 14:47:50,440 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-29 14:47:50,440 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 14:47:50,440 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |old(#t~string7.base)| |#t~string7.base|) (= |old(#valid)| |#valid|)) [2020-10-29 14:47:50,441 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 14:47:50,441 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 14:47:50,441 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 14:47:50,441 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 14:47:50,441 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 14:47:50,441 INFO L277 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2020-10-29 14:47:50,441 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-29 14:47:50,441 INFO L274 CegarLoopResult]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2020-10-29 14:47:50,442 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2020-10-29 14:47:50,442 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc17.base|)))) [2020-10-29 14:47:50,442 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 41 50) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-29 14:47:50,442 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-29 14:47:50,442 INFO L274 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-10-29 14:47:50,443 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 41 50) no Hoare annotation was computed. [2020-10-29 14:47:50,443 INFO L270 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-29 14:47:50,443 INFO L274 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-10-29 14:47:50,443 INFO L274 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-10-29 14:47:50,443 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 41 50) no Hoare annotation was computed. [2020-10-29 14:47:50,443 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (and (<= 0 check_~x) (<= (+ check_~y 1) check_~n) (= (select |#memory_int| check_~a.base) .cse0)) (not (<= 0 |check_#in~x|)) (not (= (select |#memory_int| |check_#in~a.base|) .cse0)))) [2020-10-29 14:47:50,444 INFO L274 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-10-29 14:47:50,444 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 16 39) the Hoare annotation is: true [2020-10-29 14:47:50,444 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-29 14:47:50,444 INFO L274 CegarLoopResult]: For program point L25(lines 25 26) no Hoare annotation was computed. [2020-10-29 14:47:50,444 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 26) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (and (<= 0 check_~x) (<= (+ check_~y 1) check_~n) (= (select |#memory_int| check_~a.base) .cse0)) (not (<= 0 |check_#in~x|)) (not (= (select |#memory_int| |check_#in~a.base|) .cse0)))) [2020-10-29 14:47:50,445 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (and (<= 0 check_~x) (<= (+ check_~y 1) check_~n) (= (select |#memory_int| check_~a.base) .cse0)) (not (<= 0 |check_#in~x|)) (not (= (select |#memory_int| |check_#in~a.base|) .cse0)))) [2020-10-29 14:47:50,445 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-29 14:47:50,445 INFO L274 CegarLoopResult]: For program point checkEXIT(lines 16 39) no Hoare annotation was computed. [2020-10-29 14:47:50,445 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-29 14:47:50,445 INFO L274 CegarLoopResult]: For program point checkFINAL(lines 16 39) no Hoare annotation was computed. [2020-10-29 14:47:50,446 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (and (<= check_~ai~0 check_~ax~0) (<= 0 check_~x) (<= (+ check_~y 1) check_~n) (= (select |#memory_int| check_~a.base) .cse0)) (not (<= 0 |check_#in~x|)) (not (= (select |#memory_int| |check_#in~a.base|) .cse0)))) [2020-10-29 14:47:50,446 INFO L274 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-10-29 14:47:50,446 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2020-10-29 14:47:50,446 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-29 14:47:50,446 INFO L270 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 14:47:50,446 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2020-10-29 14:47:50,446 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-10-29 14:47:50,447 INFO L274 CegarLoopResult]: For program point L11-4(lines 10 12) no Hoare annotation was computed. [2020-10-29 14:47:50,447 INFO L270 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-29 14:47:50,447 INFO L274 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-10-29 14:47:50,447 INFO L274 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-10-29 14:47:50,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 02:47:50 BoogieIcfgContainer [2020-10-29 14:47:50,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 14:47:50,456 INFO L168 Benchmark]: Toolchain (without parser) took 7003.86 ms. Allocated memory was 169.9 MB in the beginning and 245.4 MB in the end (delta: 75.5 MB). Free memory was 145.2 MB in the beginning and 89.7 MB in the end (delta: 55.5 MB). Peak memory consumption was 131.7 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:50,457 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 125.8 MB. Free memory is still 100.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 14:47:50,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.21 ms. Allocated memory is still 169.9 MB. Free memory was 144.6 MB in the beginning and 134.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:50,459 INFO L168 Benchmark]: Boogie Preprocessor took 52.14 ms. Allocated memory is still 169.9 MB. Free memory was 134.8 MB in the beginning and 133.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:50,460 INFO L168 Benchmark]: RCFGBuilder took 564.90 ms. Allocated memory is still 169.9 MB. Free memory was 133.1 MB in the beginning and 150.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:50,461 INFO L168 Benchmark]: TraceAbstraction took 6063.16 ms. Allocated memory was 169.9 MB in the beginning and 245.4 MB in the end (delta: 75.5 MB). Free memory was 150.3 MB in the beginning and 89.7 MB in the end (delta: 60.6 MB). Peak memory consumption was 137.1 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:50,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 125.8 MB. Free memory is still 100.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.21 ms. Allocated memory is still 169.9 MB. Free memory was 144.6 MB in the beginning and 134.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.14 ms. Allocated memory is still 169.9 MB. Free memory was 134.8 MB in the beginning and 133.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 564.90 ms. Allocated memory is still 169.9 MB. Free memory was 133.1 MB in the beginning and 150.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6063.16 ms. Allocated memory was 169.9 MB in the beginning and 245.4 MB in the end (delta: 75.5 MB). Free memory was 150.3 MB in the beginning and 89.7 MB in the end (delta: 60.6 MB). Peak memory consumption was 137.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 8 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 120 SDslu, 105 SDs, 0 SdLazy, 416 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 17 LocationsWithAnnotation, 42 PreInvPairs, 50 NumberOfFragments, 214 HoareAnnotationTreeSize, 42 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 409 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 8428 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 6/8 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...