/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/nla-digbench/prodbin.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 10:02:22,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 10:02:22,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 10:02:22,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 10:02:22,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 10:02:22,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 10:02:22,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 10:02:22,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 10:02:22,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 10:02:22,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 10:02:22,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 10:02:22,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 10:02:22,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 10:02:22,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 10:02:22,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 10:02:22,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 10:02:22,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 10:02:22,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 10:02:22,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 10:02:22,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 10:02:22,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 10:02:22,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 10:02:22,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 10:02:22,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 10:02:22,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 10:02:22,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 10:02:22,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 10:02:22,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 10:02:22,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 10:02:22,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 10:02:22,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 10:02:22,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 10:02:22,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 10:02:22,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 10:02:22,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 10:02:22,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 10:02:22,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 10:02:22,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 10:02:22,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 10:02:22,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 10:02:22,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 10:02:22,882 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 10:02:22,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 10:02:22,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 10:02:22,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 10:02:22,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 10:02:22,911 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 10:02:22,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 10:02:22,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 10:02:22,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 10:02:22,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 10:02:22,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 10:02:22,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 10:02:22,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 10:02:22,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 10:02:22,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 10:02:22,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 10:02:22,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 10:02:22,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 10:02:22,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 10:02:22,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 10:02:22,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 10:02:22,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 10:02:22,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 10:02:22,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 10:02:22,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 10:02:22,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 10:02:22,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 10:02:22,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 10:02:22,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 10:02:22,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 10:02:22,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 10:02:23,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 10:02:23,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 10:02:23,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 10:02:23,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 10:02:23,337 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 10:02:23,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/prodbin.c [2020-10-29 10:02:23,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ada08cbc7/1b0fc5dc88a14b1a87f723e06858c40c/FLAG0daa85849 [2020-10-29 10:02:23,976 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 10:02:23,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/prodbin.c [2020-10-29 10:02:23,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ada08cbc7/1b0fc5dc88a14b1a87f723e06858c40c/FLAG0daa85849 [2020-10-29 10:02:24,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ada08cbc7/1b0fc5dc88a14b1a87f723e06858c40c [2020-10-29 10:02:24,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 10:02:24,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 10:02:24,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 10:02:24,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 10:02:24,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 10:02:24,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:02:24" (1/1) ... [2020-10-29 10:02:24,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23cd590f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24, skipping insertion in model container [2020-10-29 10:02:24,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:02:24" (1/1) ... [2020-10-29 10:02:24,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 10:02:24,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 10:02:24,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:02:24,579 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 10:02:24,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:02:24,615 INFO L208 MainTranslator]: Completed translation [2020-10-29 10:02:24,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24 WrapperNode [2020-10-29 10:02:24,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 10:02:24,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 10:02:24,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 10:02:24,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 10:02:24,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24" (1/1) ... [2020-10-29 10:02:24,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24" (1/1) ... [2020-10-29 10:02:24,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24" (1/1) ... [2020-10-29 10:02:24,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24" (1/1) ... [2020-10-29 10:02:24,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24" (1/1) ... [2020-10-29 10:02:24,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24" (1/1) ... [2020-10-29 10:02:24,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24" (1/1) ... [2020-10-29 10:02:24,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 10:02:24,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 10:02:24,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 10:02:24,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 10:02:24,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24" (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 10:02:24,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 10:02:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 10:02:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 10:02:24,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 10:02:24,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 10:02:24,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 10:02:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 10:02:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 10:02:24,745 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 10:02:24,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 10:02:24,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 10:02:24,747 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 10:02:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 10:02:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 10:02:24,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 10:02:24,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 10:02:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 10:02:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 10:02:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 10:02:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 10:02:25,129 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 10:02:25,129 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 10:02:25,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:02:25 BoogieIcfgContainer [2020-10-29 10:02:25,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 10:02:25,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 10:02:25,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 10:02:25,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 10:02:25,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 10:02:24" (1/3) ... [2020-10-29 10:02:25,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc0857b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:02:25, skipping insertion in model container [2020-10-29 10:02:25,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:02:24" (2/3) ... [2020-10-29 10:02:25,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc0857b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:02:25, skipping insertion in model container [2020-10-29 10:02:25,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:02:25" (3/3) ... [2020-10-29 10:02:25,141 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin.c [2020-10-29 10:02:25,158 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 10:02:25,169 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 10:02:25,199 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 10:02:25,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 10:02:25,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 10:02:25,227 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 10:02:25,227 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 10:02:25,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 10:02:25,253 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 10:02:25,253 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 10:02:25,253 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 10:02:25,277 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-29 10:02:25,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 10:02:25,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:02:25,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:02:25,284 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:02:25,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:02:25,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1264288619, now seen corresponding path program 1 times [2020-10-29 10:02:25,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:02:25,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067034250] [2020-10-29 10:02:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:02:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:02:25,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:25,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:02:25,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067034250] [2020-10-29 10:02:25,638 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-29 10:02:25,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:02:25,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-29 10:02:25,639 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-29 10:02:25,640 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 10:02:25,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 10:02:25,664 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-29 10:02:25,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 10:02:25 BoogieIcfgContainer [2020-10-29 10:02:25,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 10:02:25,669 INFO L168 Benchmark]: Toolchain (without parser) took 1298.60 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 122.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. [2020-10-29 10:02:25,672 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 152.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 10:02:25,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.65 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 116.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 10:02:25,677 INFO L168 Benchmark]: Boogie Preprocessor took 39.09 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 10:02:25,678 INFO L168 Benchmark]: RCFGBuilder took 474.97 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 100.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-29 10:02:25,680 INFO L168 Benchmark]: TraceAbstraction took 530.78 ms. Allocated memory is still 152.0 MB. Free memory was 100.3 MB in the beginning and 122.6 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 10:02:25,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 152.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.65 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 116.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.09 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 114.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 474.97 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 100.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 530.78 ms. Allocated memory is still 152.0 MB. Free memory was 100.3 MB in the beginning and 122.6 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: 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, overapproximation of to_int at line 24. Possible FailurePath: [L21] int a, b; [L22] int x, y, z; [L24] a = __VERIFIER_nondet_double() [L25] b = __VERIFIER_nondet_double() [L26] CALL assume_abort_if_not(b >= 1) [L10] COND TRUE !cond [L26] RET assume_abort_if_not(b >= 1) [L28] x = a [L29] y = b [L30] z = 0 [L32] COND FALSE !(1) [L44] CALL __VERIFIER_assert(z == a * b) [L13] COND TRUE !(cond) [L15] CALL reach_error() [L6] __assert_fail("0", "prodbin.c", 6, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.4s, 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=32occurred 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...