/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-programs/partial_mod_count_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:27:38,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:27:38,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:27:38,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:27:38,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:27:38,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:27:38,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:27:38,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:27:38,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:27:38,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:27:38,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:27:38,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:27:38,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:27:38,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:27:38,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:27:38,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:27:38,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:27:38,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:27:38,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:27:38,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:27:38,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:27:38,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:27:38,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:27:38,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:27:38,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:27:38,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:27:38,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:27:38,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:27:38,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:27:38,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:27:38,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:27:38,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:27:38,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:27:38,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:27:38,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:27:38,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:27:38,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:27:38,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:27:38,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:27:38,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:27:38,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:27:38,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 09:27:38,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:27:38,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:27:38,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:27:38,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:27:38,483 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:27:38,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:27:38,484 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:27:38,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:27:38,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:27:38,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:27:38,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:27:38,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:27:38,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:27:38,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:27:38,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:27:38,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:27:38,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:27:38,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:27:38,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:27:38,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:27:38,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:27:38,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:27:38,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:27:38,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:27:38,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:27:38,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:27:38,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:27:38,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:27:38,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:27:38,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:27:38,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:27:38,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:27:38,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:27:38,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:27:38,953 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:27:38,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_2.c [2020-10-28 09:27:39,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56d14cd66/3f3a37bf567946209fd9f3150b66b7a6/FLAGc5785c441 [2020-10-28 09:27:39,778 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:27:39,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_2.c [2020-10-28 09:27:39,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56d14cd66/3f3a37bf567946209fd9f3150b66b7a6/FLAGc5785c441 [2020-10-28 09:27:40,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56d14cd66/3f3a37bf567946209fd9f3150b66b7a6 [2020-10-28 09:27:40,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:27:40,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:27:40,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:40,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:27:40,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:27:40,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:40" (1/1) ... [2020-10-28 09:27:40,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d8da27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40, skipping insertion in model container [2020-10-28 09:27:40,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:40" (1/1) ... [2020-10-28 09:27:40,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:27:40,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:27:40,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:40,328 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:27:40,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:40,366 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:27:40,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40 WrapperNode [2020-10-28 09:27:40,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:40,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:27:40,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:27:40,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:27:40,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40" (1/1) ... [2020-10-28 09:27:40,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40" (1/1) ... [2020-10-28 09:27:40,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40" (1/1) ... [2020-10-28 09:27:40,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40" (1/1) ... [2020-10-28 09:27:40,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40" (1/1) ... [2020-10-28 09:27:40,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40" (1/1) ... [2020-10-28 09:27:40,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40" (1/1) ... [2020-10-28 09:27:40,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:27:40,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:27:40,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:27:40,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:27:40,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:27:40,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:27:40,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:27:40,497 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:27:40,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:27:40,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:27:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:27:40,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:27:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:27:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:27:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:27:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:27:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:27:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:27:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:27:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:27:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:27:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:27:41,118 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:27:41,118 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:27:41,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:41 BoogieIcfgContainer [2020-10-28 09:27:41,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:27:41,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:27:41,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:27:41,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:27:41,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:27:40" (1/3) ... [2020-10-28 09:27:41,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a86ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:41, skipping insertion in model container [2020-10-28 09:27:41,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:40" (2/3) ... [2020-10-28 09:27:41,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a86ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:41, skipping insertion in model container [2020-10-28 09:27:41,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:41" (3/3) ... [2020-10-28 09:27:41,133 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_2.c [2020-10-28 09:27:41,149 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:27:41,155 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:27:41,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:27:41,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:27:41,218 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:27:41,219 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:27:41,219 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:27:41,219 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:27:41,219 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:27:41,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:27:41,220 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:27:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-28 09:27:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 09:27:41,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:41,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:41,259 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:41,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1115320526, now seen corresponding path program 1 times [2020-10-28 09:27:41,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:41,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377276088] [2020-10-28 09:27:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:42,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:42,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:27:42,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:27:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-28 09:27:42,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:42,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:42,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:42,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:27:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:42,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:27:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:42,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:42,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:42,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:42,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 09:27:42,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:42,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:27:42,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377276088] [2020-10-28 09:27:42,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:27:42,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:27:42,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455649542] [2020-10-28 09:27:42,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:27:42,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:42,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:27:42,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:42,313 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-28 09:27:42,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:42,444 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-10-28 09:27:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:27:42,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-28 09:27:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:42,454 INFO L225 Difference]: With dead ends: 46 [2020-10-28 09:27:42,455 INFO L226 Difference]: Without dead ends: 21 [2020-10-28 09:27:42,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-28 09:27:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-28 09:27:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-28 09:27:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-28 09:27:42,503 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2020-10-28 09:27:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:42,503 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-28 09:27:42,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:27:42,504 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-28 09:27:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 09:27:42,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:42,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:42,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:27:42,505 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:42,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1586809383, now seen corresponding path program 1 times [2020-10-28 09:27:42,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:42,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118979248] [2020-10-28 09:27:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:42,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:42,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:42,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:42,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:27:42,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-28 09:27:42,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:42,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:27:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:27:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:27:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:42,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:43,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:43,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:43,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:43,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 09:27:43,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:43,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:43,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:27:43,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:27:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:27:43,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118979248] [2020-10-28 09:27:43,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:27:43,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:27:43,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465884496] [2020-10-28 09:27:43,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:27:43,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:43,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:27:43,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:27:43,040 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2020-10-28 09:27:43,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:43,301 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2020-10-28 09:27:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:27:43,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-28 09:27:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:43,305 INFO L225 Difference]: With dead ends: 40 [2020-10-28 09:27:43,305 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 09:27:43,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:27:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 09:27:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2020-10-28 09:27:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-28 09:27:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-28 09:27:43,319 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-10-28 09:27:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:43,319 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-28 09:27:43,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:27:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-28 09:27:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 09:27:43,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:43,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:43,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:27:43,321 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:43,322 INFO L82 PathProgramCache]: Analyzing trace with hash -190105849, now seen corresponding path program 1 times [2020-10-28 09:27:43,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:43,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580418736] [2020-10-28 09:27:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:43,337 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:27:43,338 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:27:43,338 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:27:43,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:27:43,359 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:27:43,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:27:43 BoogieIcfgContainer [2020-10-28 09:27:43,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:27:43,362 INFO L168 Benchmark]: Toolchain (without parser) took 3254.63 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 124.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:43,364 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 122.8 MB in the end (delta: 91.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:27:43,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.08 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:43,366 INFO L168 Benchmark]: Boogie Preprocessor took 41.43 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:43,366 INFO L168 Benchmark]: RCFGBuilder took 710.27 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 100.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:43,367 INFO L168 Benchmark]: TraceAbstraction took 2236.42 ms. Allocated memory is still 151.0 MB. Free memory was 99.6 MB in the beginning and 124.5 MB in the end (delta: -24.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:27:43,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 122.8 MB in the end (delta: 91.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.08 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.43 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 710.27 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 100.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2236.42 ms. Allocated memory is still 151.0 MB. Free memory was 99.6 MB in the beginning and 124.5 MB in the end (delta: -24.9 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: [L6] int N = 1000000; [L8] int i,j=0,a[N]; [L9] unsigned int R=2; [L11] i=0 [L11] COND TRUE iN/2 [L14] a[i]=i%R [L11] i++ [L11] COND FALSE !(i