/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=SHALLOWEST --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/loop-new/gauss_sum.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:43:59,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:43:59,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:43:59,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:43:59,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:43:59,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:43:59,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:43:59,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:43:59,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:43:59,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:43:59,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:43:59,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:43:59,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:43:59,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:43:59,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:43:59,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:43:59,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:43:59,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:43:59,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:43:59,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:43:59,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:43:59,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:43:59,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:43:59,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:43:59,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:43:59,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:43:59,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:43:59,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:43:59,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:43:59,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:43:59,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:43:59,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:43:59,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:43:59,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:43:59,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:43:59,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:43:59,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:43:59,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:43:59,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:43:59,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:43:59,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:43:59,605 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 [2020-10-27 01:43:59,658 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:43:59,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:43:59,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:43:59,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:43:59,664 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:43:59,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:43:59,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:43:59,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:43:59,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:43:59,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:43:59,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:43:59,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:43:59,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:43:59,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:43:59,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:43:59,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:43:59,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:43:59,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:43:59,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:43:59,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:43:59,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:43:59,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:43:59,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:43:59,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:43:59,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:43:59,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:43:59,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:43:59,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:43:59,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:43:59,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:44:00,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:44:00,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:44:00,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:44:00,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:44:00,133 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:44:00,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2020-10-27 01:44:00,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0048b22e/9f6b0cc86e414e5aafbd8e4b925beb46/FLAG6f0c417e0 [2020-10-27 01:44:00,845 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:44:00,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2020-10-27 01:44:00,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0048b22e/9f6b0cc86e414e5aafbd8e4b925beb46/FLAG6f0c417e0 [2020-10-27 01:44:01,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0048b22e/9f6b0cc86e414e5aafbd8e4b925beb46 [2020-10-27 01:44:01,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:44:01,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:44:01,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:44:01,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:44:01,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:44:01,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:44:01" (1/1) ... [2020-10-27 01:44:01,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761b01b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01, skipping insertion in model container [2020-10-27 01:44:01,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:44:01" (1/1) ... [2020-10-27 01:44:01,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:44:01,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:44:01,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:44:01,451 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:44:01,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:44:01,497 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:44:01,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01 WrapperNode [2020-10-27 01:44:01,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:44:01,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:44:01,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:44:01,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:44:01,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01" (1/1) ... [2020-10-27 01:44:01,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01" (1/1) ... [2020-10-27 01:44:01,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01" (1/1) ... [2020-10-27 01:44:01,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01" (1/1) ... [2020-10-27 01:44:01,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01" (1/1) ... [2020-10-27 01:44:01,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01" (1/1) ... [2020-10-27 01:44:01,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01" (1/1) ... [2020-10-27 01:44:01,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:44:01,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:44:01,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:44:01,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:44:01,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01" (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 [2020-10-27 01:44:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:44:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:44:01,620 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:44:01,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 01:44:01,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:44:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:44:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:44:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:44:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:44:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 01:44:01,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:44:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:44:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:44:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:44:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:44:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:44:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:44:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:44:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:44:01,990 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:44:01,990 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:44:01,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:01 BoogieIcfgContainer [2020-10-27 01:44:01,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:44:01,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:44:01,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:44:02,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:44:02,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:44:01" (1/3) ... [2020-10-27 01:44:02,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc40baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:02, skipping insertion in model container [2020-10-27 01:44:02,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:01" (2/3) ... [2020-10-27 01:44:02,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc40baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:02, skipping insertion in model container [2020-10-27 01:44:02,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:01" (3/3) ... [2020-10-27 01:44:02,009 INFO L111 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.c [2020-10-27 01:44:02,040 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:44:02,049 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:44:02,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:44:02,113 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:44:02,113 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:44:02,113 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:44:02,113 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:44:02,113 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:44:02,113 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:44:02,114 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:44:02,114 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:44:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-27 01:44:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 01:44:02,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:02,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:02,139 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:02,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash -70028365, now seen corresponding path program 1 times [2020-10-27 01:44:02,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:02,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506504532] [2020-10-27 01:44:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:02,328 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 01:44:02,328 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 01:44:02,329 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:44:02,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:44:02,365 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 01:44:02,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:44:02 BoogieIcfgContainer [2020-10-27 01:44:02,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:44:02,370 INFO L168 Benchmark]: Toolchain (without parser) took 1147.11 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 124.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:02,373 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:44:02,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.06 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 118.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:02,376 INFO L168 Benchmark]: Boogie Preprocessor took 37.11 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:02,377 INFO L168 Benchmark]: RCFGBuilder took 455.34 ms. Allocated memory is still 153.1 MB. Free memory was 116.5 MB in the beginning and 136.4 MB in the end (delta: -19.8 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:02,378 INFO L168 Benchmark]: TraceAbstraction took 368.25 ms. Allocated memory is still 153.1 MB. Free memory was 136.1 MB in the beginning and 124.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:02,389 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 153.1 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.06 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 118.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.11 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 455.34 ms. Allocated memory is still 153.1 MB. Free memory was 116.5 MB in the beginning and 136.4 MB in the end (delta: -19.8 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 368.25 ms. Allocated memory is still 153.1 MB. Free memory was 136.1 MB in the beginning and 124.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L12] int __return_96; [L15] int main__n; [L16] int main__sum; [L17] int main__i; [L18] main__n = __VERIFIER_nondet_int() [L19] COND FALSE !(!(1 <= main__n)) [L25] COND FALSE !(!(main__n <= 1000)) [L31] main__sum = 0 [L32] main__i = 1 [L33] COND TRUE main__i <= main__n [L35] main__sum = main__sum + main__i [L36] main__i = main__i + 1 [L37] COND TRUE main__i <= main__n [L39] main__sum = main__sum + main__i [L40] main__i = main__i + 1 [L41] COND TRUE main__i <= main__n [L43] main__sum = main__sum + main__i [L44] main__i = main__i + 1 [L45] COND TRUE main__i <= main__n [L47] main__sum = main__sum + main__i [L48] main__i = main__i + 1 [L49] COND TRUE main__i <= main__n [L51] main__sum = main__sum + main__i [L52] main__i = main__i + 1 [L54] COND FALSE !(main__i <= main__n) [L63] int __tmp_1; [L64] __tmp_1 = (2 * main__sum) == (main__n * (main__n + 1)) [L65] int __VERIFIER_assert__cond; [L66] __VERIFIER_assert__cond = __tmp_1 [L67] COND TRUE __VERIFIER_assert__cond == 0 [L69] CALL reach_error() [L4] __assert_fail("0", "gauss_sum.i.p+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...