/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_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:27:37,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:27:37,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:27:37,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:27:37,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:27:37,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:27:37,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:27:37,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:27:37,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:27:37,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:27:37,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:27:37,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:27:37,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:27:37,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:27:37,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:27:37,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:27:37,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:27:37,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:27:37,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:27:37,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:27:37,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:27:37,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:27:37,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:27:37,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:27:37,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:27:37,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:27:37,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:27:37,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:27:37,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:27:37,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:27:37,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:27:37,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:27:37,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:27:37,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:27:37,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:27:37,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:27:37,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:27:37,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:27:37,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:27:37,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:27:37,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:27:37,644 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 09:27:37,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:27:37,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:27:37,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:27:37,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:27:37,707 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:27:37,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:27:37,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:27:37,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:27:37,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:27:37,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:27:37,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:27:37,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:27:37,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:27:37,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:27:37,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:27:37,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:27:37,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:27:37,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:27:37,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:27:37,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:27:37,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:27:37,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:27:37,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:27:37,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:27:37,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:27:37,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:27:37,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:27:37,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:27:37,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:27:37,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:27:38,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:27:38,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:27:38,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:27:38,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:27:38,232 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:27:38,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_1.c [2020-10-28 09:27:38,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090cbc68b/090c61fc5b5647c8a63b9b69df2c7748/FLAGa373ce4e1 [2020-10-28 09:27:38,987 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:27:38,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_1.c [2020-10-28 09:27:38,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090cbc68b/090c61fc5b5647c8a63b9b69df2c7748/FLAGa373ce4e1 [2020-10-28 09:27:39,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/090cbc68b/090c61fc5b5647c8a63b9b69df2c7748 [2020-10-28 09:27:39,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:27:39,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:27:39,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:39,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:27:39,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:27:39,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:39" (1/1) ... [2020-10-28 09:27:39,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1124215d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39, skipping insertion in model container [2020-10-28 09:27:39,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:27:39" (1/1) ... [2020-10-28 09:27:39,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:27:39,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:27:39,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:39,538 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:27:39,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:27:39,579 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:27:39,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39 WrapperNode [2020-10-28 09:27:39,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:27:39,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:27:39,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:27:39,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:27:39,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39" (1/1) ... [2020-10-28 09:27:39,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39" (1/1) ... [2020-10-28 09:27:39,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39" (1/1) ... [2020-10-28 09:27:39,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39" (1/1) ... [2020-10-28 09:27:39,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39" (1/1) ... [2020-10-28 09:27:39,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39" (1/1) ... [2020-10-28 09:27:39,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39" (1/1) ... [2020-10-28 09:27:39,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:27:39,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:27:39,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:27:39,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:27:39,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39" (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 09:27:39,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:27:39,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:27:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:27:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:27:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:27:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:27:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:27:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:27:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:27:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:27:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:27:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:27:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:27:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:27:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:27:39,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:27:39,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:27:40,302 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:27:40,303 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:27:40,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:40 BoogieIcfgContainer [2020-10-28 09:27:40,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:27:40,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:27:40,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:27:40,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:27:40,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:27:39" (1/3) ... [2020-10-28 09:27:40,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23532d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:40, skipping insertion in model container [2020-10-28 09:27:40,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:27:39" (2/3) ... [2020-10-28 09:27:40,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23532d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:27:40, skipping insertion in model container [2020-10-28 09:27:40,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:27:40" (3/3) ... [2020-10-28 09:27:40,320 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_1.c [2020-10-28 09:27:40,333 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:27:40,338 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:27:40,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:27:40,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:27:40,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:27:40,399 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:27:40,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:27:40,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:27:40,399 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:27:40,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:27:40,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:27:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-28 09:27:40,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 09:27:40,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:40,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:40,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:40,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:40,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1115320526, now seen corresponding path program 1 times [2020-10-28 09:27:40,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:40,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132724881] [2020-10-28 09:27:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:41,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:41,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:27:41,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:27:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-28 09:27:41,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:41,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:27:41,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:41,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:27:41,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:41,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:41,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:41,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 09:27:41,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:41,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:27:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:27:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:27:41,442 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 09:27:41,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132724881] [2020-10-28 09:27:41,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:27:41,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:27:41,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330130941] [2020-10-28 09:27:41,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:27:41,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:41,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:27:41,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:27:41,477 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-28 09:27:41,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:41,579 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-10-28 09:27:41,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:27:41,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-28 09:27:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:41,588 INFO L225 Difference]: With dead ends: 46 [2020-10-28 09:27:41,589 INFO L226 Difference]: Without dead ends: 21 [2020-10-28 09:27:41,592 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 09:27:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-28 09:27:41,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-28 09:27:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-28 09:27:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-28 09:27:41,632 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2020-10-28 09:27:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:41,632 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-28 09:27:41,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:27:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-28 09:27:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 09:27:41,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:41,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:27:41,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:27:41,634 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:41,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1586809383, now seen corresponding path program 1 times [2020-10-28 09:27:41,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:41,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047183920] [2020-10-28 09:27:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:41,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:42,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:42,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:27:42,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:27:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-28 09:27:42,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:42,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:27:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:27:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:27:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:27:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:27:42,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:27:42,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:27:42,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:27:42,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:27:42,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 09:27:42,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:27:42,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:27:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:27:42,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:27:42,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:27:42,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:27:42,135 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 09:27:42,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047183920] [2020-10-28 09:27:42,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:27:42,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:27:42,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168281377] [2020-10-28 09:27:42,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:27:42,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:27:42,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:27:42,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:27:42,140 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2020-10-28 09:27:42,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:27:42,300 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2020-10-28 09:27:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:27:42,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-28 09:27:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:27:42,304 INFO L225 Difference]: With dead ends: 40 [2020-10-28 09:27:42,304 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 09:27:42,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:27:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 09:27:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2020-10-28 09:27:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-28 09:27:42,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-28 09:27:42,318 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-10-28 09:27:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:27:42,319 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-28 09:27:42,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:27:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-28 09:27:42,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 09:27:42,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:27:42,320 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 09:27:42,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:27:42,321 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:27:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:27:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash -190105849, now seen corresponding path program 1 times [2020-10-28 09:27:42,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:27:42,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740513098] [2020-10-28 09:27:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:27:42,334 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:27:42,335 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:27:42,335 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:27:42,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:27:42,357 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:27:42,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:27:42 BoogieIcfgContainer [2020-10-28 09:27:42,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:27:42,361 INFO L168 Benchmark]: Toolchain (without parser) took 3035.04 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 136.6 MB in the beginning and 133.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:42,362 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 155.2 MB. Free memory was 126.7 MB in the beginning and 126.6 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:27:42,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.34 ms. Allocated memory is still 155.2 MB. Free memory was 135.9 MB in the beginning and 126.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:42,364 INFO L168 Benchmark]: Boogie Preprocessor took 54.04 ms. Allocated memory is still 155.2 MB. Free memory was 126.7 MB in the beginning and 139.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:42,366 INFO L168 Benchmark]: RCFGBuilder took 669.57 ms. Allocated memory is still 155.2 MB. Free memory was 139.4 MB in the beginning and 124.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:42,367 INFO L168 Benchmark]: TraceAbstraction took 2050.33 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 123.9 MB in the beginning and 133.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:27:42,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 155.2 MB. Free memory was 126.7 MB in the beginning and 126.6 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.34 ms. Allocated memory is still 155.2 MB. Free memory was 135.9 MB in the beginning and 126.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.04 ms. Allocated memory is still 155.2 MB. Free memory was 126.7 MB in the beginning and 139.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 669.57 ms. Allocated memory is still 155.2 MB. Free memory was 139.4 MB in the beginning and 124.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2050.33 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 123.9 MB in the beginning and 133.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 22.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L6] int N = 1000000; [L8] int i,j=0,a[N]; [L9] unsigned int R=1; [L10] i=0 [L10] COND TRUE iN/2 [L13] a[i]=i%R [L10] i++ [L10] COND FALSE !(i