/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=DEEPEST --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 [2020-10-27 14:52:07,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:52:07,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:52:07,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:52:07,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:52:07,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:52:07,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:52:07,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:52:07,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:52:07,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:52:07,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:52:07,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:52:07,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:52:07,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:52:07,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:52:07,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:52:07,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:52:07,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:52:07,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:52:07,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:52:07,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:52:07,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:52:07,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:52:07,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:52:07,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:52:07,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:52:07,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:52:07,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:52:07,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:52:07,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:52:07,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:52:07,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:52:07,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:52:07,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:52:07,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:52:07,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:52:07,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:52:07,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:52:07,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:52:07,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:52:07,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:52:07,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:52:07,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:52:07,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:52:07,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:52:07,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:52:07,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:52:07,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:52:07,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:52:07,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:52:07,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:52:07,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:52:07,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:52:07,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:52:07,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:52:07,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:52:07,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:52:07,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:52:07,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:52:07,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:52:07,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:52:07,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:52:07,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:52:07,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:52:07,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:52:07,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:52:07,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:52:07,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:52:07,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:52:07,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:52:07,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:52:07,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:52:07,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:52:07,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:52:07,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:52:07,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:52:07,951 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:52:07,952 INFO L432 ainManager$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 [2020-10-27 14:52:08,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80a9a0c5a/e3069c006bcd45648bb278be5b0551bd/FLAGe80ff2da7 [2020-10-27 14:52:08,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:52:08,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2020-10-27 14:52:08,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80a9a0c5a/e3069c006bcd45648bb278be5b0551bd/FLAGe80ff2da7 [2020-10-27 14:52:09,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80a9a0c5a/e3069c006bcd45648bb278be5b0551bd [2020-10-27 14:52:09,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:52:09,129 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:52:09,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:52:09,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:52:09,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:52:09,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:52:09" (1/1) ... [2020-10-27 14:52:09,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3470b7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09, skipping insertion in model container [2020-10-27 14:52:09,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:52:09" (1/1) ... [2020-10-27 14:52:09,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:52:09,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:52:09,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:52:09,373 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:52:09,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:52:09,414 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:52:09,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09 WrapperNode [2020-10-27 14:52:09,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:52:09,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:52:09,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:52:09,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:52:09,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09" (1/1) ... [2020-10-27 14:52:09,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09" (1/1) ... [2020-10-27 14:52:09,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09" (1/1) ... [2020-10-27 14:52:09,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09" (1/1) ... [2020-10-27 14:52:09,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09" (1/1) ... [2020-10-27 14:52:09,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09" (1/1) ... [2020-10-27 14:52:09,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09" (1/1) ... [2020-10-27 14:52:09,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:52:09,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:52:09,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:52:09,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:52:09,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:52:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:52:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:52:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:52:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:52:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:52:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:52:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:52:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:52:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:52:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:52:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:52:09,555 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:52:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:52:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:52:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:52:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:52:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:52:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:52:09,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:52:09,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:52:09,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:52:09,876 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:52:09,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:52:09 BoogieIcfgContainer [2020-10-27 14:52:09,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:52:09,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:52:09,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:52:09,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:52:09,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:52:09" (1/3) ... [2020-10-27 14:52:09,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba09a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:52:09, skipping insertion in model container [2020-10-27 14:52:09,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:52:09" (2/3) ... [2020-10-27 14:52:09,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba09a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:52:09, skipping insertion in model container [2020-10-27 14:52:09,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:52:09" (3/3) ... [2020-10-27 14:52:09,926 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2020-10-27 14:52:09,970 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:52:09,976 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:52:09,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:52:10,017 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:52:10,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:52:10,018 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:52:10,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:52:10,018 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:52:10,018 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:52:10,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:52:10,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:52:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 14:52:10,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:52:10,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:10,047 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] [2020-10-27 14:52:10,050 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:10,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:10,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1396075351, now seen corresponding path program 1 times [2020-10-27 14:52:10,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:10,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753036435] [2020-10-27 14:52:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:10,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:10,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:11,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:11,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 14:52:11,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:52:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-27 14:52:11,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:52:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:52:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:52:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:52:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:11,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:11,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:11,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:11,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 14:52:11,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:52:11,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:52:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:11,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:11,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:11,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:52:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:52:11,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:52:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:52:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:11,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753036435] [2020-10-27 14:52:11,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:52:11,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:52:11,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206730220] [2020-10-27 14:52:11,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:52:11,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:11,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:52:11,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:52:11,662 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-10-27 14:52:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:11,925 INFO L93 Difference]: Finished difference Result 83 states and 113 transitions. [2020-10-27 14:52:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:52:11,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-27 14:52:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:11,936 INFO L225 Difference]: With dead ends: 83 [2020-10-27 14:52:11,937 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:52:11,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:52:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:52:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-10-27 14:52:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:52:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:52:11,991 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 21 [2020-10-27 14:52:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:11,991 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:52:11,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:52:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:52:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 14:52:11,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:11,993 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] [2020-10-27 14:52:11,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:52:11,994 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:11,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:11,995 INFO L82 PathProgramCache]: Analyzing trace with hash 489092602, now seen corresponding path program 1 times [2020-10-27 14:52:11,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:11,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303806235] [2020-10-27 14:52:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:15,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:15,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:52:15,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:52:15,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3115 [2020-10-27 14:52:15,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:15,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:52:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:52:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:52:15,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:15,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:15,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:15,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:15,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:15,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:52:15,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:15,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:15,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:52:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:15,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:15,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:15,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:52:15,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:52:15,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303806235] [2020-10-27 14:52:15,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:15,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:52:15,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838856620] [2020-10-27 14:52:15,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:52:15,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:15,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:52:15,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:52:15,298 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-27 14:52:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:15,602 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2020-10-27 14:52:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:52:15,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-27 14:52:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:15,606 INFO L225 Difference]: With dead ends: 63 [2020-10-27 14:52:15,607 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 14:52:15,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:52:15,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 14:52:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2020-10-27 14:52:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:52:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-27 14:52:15,623 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 26 [2020-10-27 14:52:15,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:15,624 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-27 14:52:15,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:52:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-27 14:52:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 14:52:15,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:15,625 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] [2020-10-27 14:52:15,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:52:15,626 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:15,627 INFO L82 PathProgramCache]: Analyzing trace with hash 546350904, now seen corresponding path program 1 times [2020-10-27 14:52:15,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:15,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249513043] [2020-10-27 14:52:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:15,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:16,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:16,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:52:16,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:52:16,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-27 14:52:16,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:52:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:52:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:52:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:16,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:16,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:16,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:16,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:16,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:52:16,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:52:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:52:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:16,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:16,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:16,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:52:16,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:52:16,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:52:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:16,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:52:16,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:52:16,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249513043] [2020-10-27 14:52:16,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:52:16,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:52:16,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266385412] [2020-10-27 14:52:16,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:52:16,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:16,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:52:16,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:52:16,511 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 6 states. [2020-10-27 14:52:16,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:16,782 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-27 14:52:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:52:16,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 14:52:16,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:16,784 INFO L225 Difference]: With dead ends: 50 [2020-10-27 14:52:16,784 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 14:52:16,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:52:16,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 14:52:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-27 14:52:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 14:52:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-27 14:52:16,804 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 26 [2020-10-27 14:52:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:16,804 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-27 14:52:16,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:52:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-27 14:52:16,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 14:52:16,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:16,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:52:16,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:52:16,809 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash 905496567, now seen corresponding path program 1 times [2020-10-27 14:52:16,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:16,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038696884] [2020-10-27 14:52:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:16,829 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 14:52:16,830 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 14:52:16,830 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:52:16,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:52:16,859 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:52:16,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:52:16 BoogieIcfgContainer [2020-10-27 14:52:16,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:52:16,865 INFO L168 Benchmark]: Toolchain (without parser) took 7736.63 ms. Allocated memory was 159.4 MB in the beginning and 244.3 MB in the end (delta: 84.9 MB). Free memory was 134.9 MB in the beginning and 197.2 MB in the end (delta: -62.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. [2020-10-27 14:52:16,866 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 159.4 MB. Free memory was 131.4 MB in the beginning and 131.2 MB in the end (delta: 108.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:52:16,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.26 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 124.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:52:16,870 INFO L168 Benchmark]: Boogie Preprocessor took 40.67 ms. Allocated memory is still 159.4 MB. Free memory was 124.5 MB in the beginning and 123.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 14:52:16,872 INFO L168 Benchmark]: RCFGBuilder took 421.24 ms. Allocated memory is still 159.4 MB. Free memory was 123.0 MB in the beginning and 106.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-27 14:52:16,874 INFO L168 Benchmark]: TraceAbstraction took 6979.19 ms. Allocated memory was 159.4 MB in the beginning and 244.3 MB in the end (delta: 84.9 MB). Free memory was 106.5 MB in the beginning and 197.2 MB in the end (delta: -90.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:52:16,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 159.4 MB. Free memory was 131.4 MB in the beginning and 131.2 MB in the end (delta: 108.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.26 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 124.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.67 ms. Allocated memory is still 159.4 MB. Free memory was 124.5 MB in the beginning and 123.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 421.24 ms. Allocated memory is still 159.4 MB. Free memory was 123.0 MB in the beginning and 106.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6979.19 ms. Allocated memory was 159.4 MB in the beginning and 244.3 MB in the end (delta: 84.9 MB). Free memory was 106.5 MB in the beginning and 197.2 MB in the end (delta: -90.7 MB). There was no memory consumed. 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) [L19] EXPR a[i] [L19] COND FALSE !(a[i]==0) [L15] i++ [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