/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/floats-cdfpl/square_6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:29:23,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:29:23,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:29:23,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:29:23,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:29:23,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:29:23,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:29:23,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:29:23,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:29:23,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:29:23,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:29:23,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:29:23,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:29:23,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:29:23,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:29:23,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:29:23,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:29:23,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:29:23,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:29:23,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:29:23,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:29:23,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:29:23,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:29:23,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:29:23,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:29:23,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:29:23,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:29:23,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:29:23,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:29:23,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:29:23,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:29:23,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:29:23,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:29:23,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:29:23,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:29:23,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:29:23,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:29:23,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:29:23,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:29:23,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:29:23,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:29:23,749 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 [2020-10-28 14:29:23,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:29:23,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:29:23,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:29:23,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:29:23,802 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:29:23,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:29:23,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:29:23,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:29:23,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:29:23,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:29:23,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:29:23,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:29:23,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:29:23,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:29:23,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:29:23,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:29:23,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:29:23,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:29:23,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:29:23,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:29:23,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:29:23,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:29:23,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:29:23,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:29:23,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:29:23,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:29:23,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:29:23,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:29:23,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:29:23,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:29:24,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:29:24,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:29:24,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:29:24,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:29:24,243 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:29:24,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_6.i [2020-10-28 14:29:24,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362caba04/5c907c2dcfbf47ab85b08006500d5c2d/FLAG30a055003 [2020-10-28 14:29:24,986 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:29:24,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cdfpl/square_6.i [2020-10-28 14:29:24,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362caba04/5c907c2dcfbf47ab85b08006500d5c2d/FLAG30a055003 [2020-10-28 14:29:25,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362caba04/5c907c2dcfbf47ab85b08006500d5c2d [2020-10-28 14:29:25,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:29:25,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:29:25,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:25,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:29:25,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:29:25,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:25" (1/1) ... [2020-10-28 14:29:25,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22af7c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25, skipping insertion in model container [2020-10-28 14:29:25,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:25" (1/1) ... [2020-10-28 14:29:25,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:29:25,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:29:25,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:25,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:29:25,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:25,671 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:29:25,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25 WrapperNode [2020-10-28 14:29:25,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:25,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:29:25,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:29:25,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:29:25,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25" (1/1) ... [2020-10-28 14:29:25,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25" (1/1) ... [2020-10-28 14:29:25,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25" (1/1) ... [2020-10-28 14:29:25,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25" (1/1) ... [2020-10-28 14:29:25,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25" (1/1) ... [2020-10-28 14:29:25,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25" (1/1) ... [2020-10-28 14:29:25,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25" (1/1) ... [2020-10-28 14:29:25,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:29:25,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:29:25,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:29:25,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:29:25,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25" (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 [2020-10-28 14:29:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:29:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:29:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:29:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 14:29:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:29:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:29:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:29:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:29:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:29:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:29:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:29:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 14:29:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:29:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:29:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:29:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:29:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:29:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:29:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:29:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:29:26,336 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:29:26,336 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:29:26,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:26 BoogieIcfgContainer [2020-10-28 14:29:26,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:29:26,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:29:26,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:29:26,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:29:26,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:29:25" (1/3) ... [2020-10-28 14:29:26,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fe15e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:26, skipping insertion in model container [2020-10-28 14:29:26,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:25" (2/3) ... [2020-10-28 14:29:26,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fe15e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:26, skipping insertion in model container [2020-10-28 14:29:26,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:26" (3/3) ... [2020-10-28 14:29:26,351 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6.i [2020-10-28 14:29:26,363 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:29:26,368 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:29:26,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:29:26,453 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:29:26,454 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:29:26,454 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:29:26,454 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:29:26,454 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:29:26,454 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:29:26,455 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:29:26,455 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:29:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-28 14:29:26,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 14:29:26,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:26,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:26,491 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash -251934156, now seen corresponding path program 1 times [2020-10-28 14:29:26,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:26,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804283042] [2020-10-28 14:29:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:26,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:26,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:29:26,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:26,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 14:29:26,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:26,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:29:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:29:26,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:26,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:26,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:26,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:26,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:29:26,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:26,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:29:27,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:29:27,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:29:27,012 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:557) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertLocalVarAssignemntPendingContext(AnnotateAndAssertCodeBlocks.java:169) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:120) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:295) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:206) ... 30 more [2020-10-28 14:29:27,023 INFO L168 Benchmark]: Toolchain (without parser) took 1673.10 ms. Allocated memory is still 158.3 MB. Free memory was 133.3 MB in the beginning and 121.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:27,024 INFO L168 Benchmark]: CDTParser took 1.63 ms. Allocated memory is still 158.3 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:29:27,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.22 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 122.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:27,026 INFO L168 Benchmark]: Boogie Preprocessor took 38.86 ms. Allocated memory is still 158.3 MB. Free memory was 122.9 MB in the beginning and 121.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:27,027 INFO L168 Benchmark]: RCFGBuilder took 626.10 ms. Allocated memory is still 158.3 MB. Free memory was 121.5 MB in the beginning and 109.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:27,028 INFO L168 Benchmark]: TraceAbstraction took 679.10 ms. Allocated memory is still 158.3 MB. Free memory was 108.6 MB in the beginning and 121.6 MB in the end (delta: -13.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:29:27,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.63 ms. Allocated memory is still 158.3 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.22 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 122.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.86 ms. Allocated memory is still 158.3 MB. Free memory was 122.9 MB in the beginning and 121.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 626.10 ms. Allocated memory is still 158.3 MB. Free memory was 121.5 MB in the beginning and 109.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 679.10 ms. Allocated memory is still 158.3 MB. Free memory was 108.6 MB in the beginning and 121.6 MB in the end (delta: -13.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...