/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/array-programs/partial_mod_count_limited_base.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:52:14,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:52:14,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:52:14,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:52:14,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:52:14,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:52:14,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:52:14,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:52:14,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:52:14,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:52:14,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:52:14,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:52:14,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:52:14,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:52:14,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:52:14,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:52:14,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:52:14,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:52:14,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:52:14,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:52:14,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:52:14,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:52:14,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:52:14,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:52:14,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:52:14,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:52:14,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:52:14,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:52:14,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:52:14,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:52:14,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:52:14,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:52:14,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:52:14,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:52:14,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:52:14,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:52:14,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:52:14,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:52:14,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:52:14,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:52:14,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:52:14,492 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 [2020-10-26 19:52:14,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:52:14,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:52:14,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:52:14,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:52:14,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:52:14,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:52:14,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:52:14,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:52:14,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:52:14,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:52:14,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:52:14,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:52:14,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:52:14,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:52:14,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:52:14,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:52:14,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:52:14,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:52:14,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:52:14,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:52:14,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:52:14,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:52:14,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:52:14,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:52:14,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:52:14,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:52:14,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:52:14,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:52:14,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:52:14,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:52:15,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:52:15,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:52:15,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:52:15,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:52:15,036 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:52:15,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2020-10-26 19:52:15,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c9dde949/3bc05b96565f45aa93108034ea45c0ad/FLAG5c6af8295 [2020-10-26 19:52:15,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:52:15,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2020-10-26 19:52:15,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c9dde949/3bc05b96565f45aa93108034ea45c0ad/FLAG5c6af8295 [2020-10-26 19:52:16,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c9dde949/3bc05b96565f45aa93108034ea45c0ad [2020-10-26 19:52:16,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:52:16,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:52:16,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:52:16,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:52:16,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:52:16,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:52:16" (1/1) ... [2020-10-26 19:52:16,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf1f6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16, skipping insertion in model container [2020-10-26 19:52:16,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:52:16" (1/1) ... [2020-10-26 19:52:16,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:52:16,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:52:16,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:52:16,483 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:52:16,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:52:16,539 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:52:16,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16 WrapperNode [2020-10-26 19:52:16,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:52:16,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:52:16,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:52:16,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:52:16,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16" (1/1) ... [2020-10-26 19:52:16,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16" (1/1) ... [2020-10-26 19:52:16,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16" (1/1) ... [2020-10-26 19:52:16,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16" (1/1) ... [2020-10-26 19:52:16,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16" (1/1) ... [2020-10-26 19:52:16,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16" (1/1) ... [2020-10-26 19:52:16,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16" (1/1) ... [2020-10-26 19:52:16,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:52:16,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:52:16,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:52:16,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:52:16,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16" (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 [2020-10-26 19:52:16,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:52:16,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:52:16,713 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:52:16,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:52:16,713 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:52:16,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:52:16,714 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:52:16,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:52:16,714 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:52:16,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:52:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:52:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:52:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:52:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:52:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:52:16,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:52:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:52:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:52:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:52:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:52:17,178 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:52:17,179 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 19:52:17,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:52:17 BoogieIcfgContainer [2020-10-26 19:52:17,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:52:17,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:52:17,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:52:17,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:52:17,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:52:16" (1/3) ... [2020-10-26 19:52:17,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bce7b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:52:17, skipping insertion in model container [2020-10-26 19:52:17,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:52:16" (2/3) ... [2020-10-26 19:52:17,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bce7b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:52:17, skipping insertion in model container [2020-10-26 19:52:17,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:52:17" (3/3) ... [2020-10-26 19:52:17,198 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2020-10-26 19:52:17,211 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:52:17,216 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:52:17,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:52:17,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:52:17,263 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:52:17,263 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:52:17,263 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:52:17,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:52:17,264 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:52:17,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:52:17,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:52:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-26 19:52:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 19:52:17,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:52:17,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:52:17,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:52:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:52:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1396075351, now seen corresponding path program 1 times [2020-10-26 19:52:17,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:52:17,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944264787] [2020-10-26 19:52:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:52:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:18,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:18,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 19:52:18,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:52:18,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-10-26 19:52:18,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:52:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 19:52:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 19:52:18,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:52:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:52:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:18,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:18,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:52:18,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:52:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 19:52:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:52:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:52:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:52:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:52:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:52:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:18,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:52:18,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:52:18,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:52:18,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:52:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 19:52:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:52:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:52:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:52:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:52:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:52:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:52:18,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944264787] [2020-10-26 19:52:18,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:52:18,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:52:18,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277555648] [2020-10-26 19:52:18,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:52:18,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:52:18,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:52:18,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:52:18,963 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2020-10-26 19:52:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:52:19,191 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2020-10-26 19:52:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:52:19,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-26 19:52:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:52:19,203 INFO L225 Difference]: With dead ends: 71 [2020-10-26 19:52:19,203 INFO L226 Difference]: Without dead ends: 38 [2020-10-26 19:52:19,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:52:19,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-26 19:52:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2020-10-26 19:52:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 19:52:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-26 19:52:19,255 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 21 [2020-10-26 19:52:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:52:19,256 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-26 19:52:19,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:52:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-26 19:52:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 19:52:19,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:52:19,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:52:19,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:52:19,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:52:19,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:52:19,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1075898616, now seen corresponding path program 1 times [2020-10-26 19:52:19,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:52:19,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914952835] [2020-10-26 19:52:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:52:19,277 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-26 19:52:19,278 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-26 19:52:19,278 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:52:19,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:52:19,299 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-26 19:52:19,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:52:19 BoogieIcfgContainer [2020-10-26 19:52:19,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:52:19,303 INFO L168 Benchmark]: Toolchain (without parser) took 3145.84 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 77.5 MB in the end (delta: 48.3 MB). Peak memory consumption was 49.1 MB. Max. memory is 8.0 GB. [2020-10-26 19:52:19,303 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:52:19,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.20 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-26 19:52:19,305 INFO L168 Benchmark]: Boogie Preprocessor took 82.05 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-26 19:52:19,307 INFO L168 Benchmark]: RCFGBuilder took 557.45 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 133.4 MB in the end (delta: -19.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-10-26 19:52:19,308 INFO L168 Benchmark]: TraceAbstraction took 2112.31 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 77.5 MB in the end (delta: 55.2 MB). Peak memory consumption was 54.9 MB. Max. memory is 8.0 GB. [2020-10-26 19:52:19,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 375.20 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.05 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 557.45 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 133.4 MB in the end (delta: -19.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2112.31 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 77.5 MB in the end (delta: 55.2 MB). Peak memory consumption was 54.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: 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: [L10] int N = 1000000; [L12] int i,j=0,k=0,a[N]; [L13] unsigned int R=__VERIFIER_nondet_int(); [L14] CALL assume_abort_if_not(R>0) [L7] COND FALSE !(!cond) [L14] RET assume_abort_if_not(R>0) [L15] i=0 [L15] COND TRUE iN/2 && k<1 [L18] a[i]=i%R [L19] EXPR a[i] [L19] COND FALSE !(a[i]==0) [L15] i++ [L15] COND FALSE !(i