/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_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:51:57,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:51:57,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:51:57,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:51:57,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:51:57,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:51:57,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:51:57,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:51:57,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:51:57,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:51:57,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:51:57,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:51:57,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:51:57,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:51:57,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:51:57,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:51:57,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:51:57,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:51:57,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:51:57,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:51:57,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:51:57,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:51:57,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:51:57,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:51:57,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:51:57,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:51:57,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:51:57,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:51:57,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:51:57,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:51:57,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:51:57,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:51:57,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:51:57,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:51:57,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:51:57,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:51:57,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:51:57,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:51:57,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:51:57,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:51:57,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:51:57,648 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 14:51:57,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:51:57,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:51:57,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:51:57,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:51:57,706 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:51:57,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:51:57,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:51:57,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:51:57,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:51:57,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:51:57,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:51:57,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:51:57,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:51:57,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:51:57,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:51:57,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:51:57,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:51:57,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:51:57,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:51:57,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:51:57,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:51:57,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:51:57,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:51:57,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:51:57,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:51:57,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:51:57,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:51:57,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:51:57,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:51:57,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:51:58,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:51:58,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:51:58,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:51:58,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:51:58,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:51:58,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_5.c [2020-10-27 14:51:58,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac666764f/5524ec6e7ef4465a9b7d60259dbd517f/FLAG1d022b25f [2020-10-27 14:51:59,053 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:51:59,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_5.c [2020-10-27 14:51:59,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac666764f/5524ec6e7ef4465a9b7d60259dbd517f/FLAG1d022b25f [2020-10-27 14:51:59,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac666764f/5524ec6e7ef4465a9b7d60259dbd517f [2020-10-27 14:51:59,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:51:59,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:51:59,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:51:59,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:51:59,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:51:59,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:51:59" (1/1) ... [2020-10-27 14:51:59,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4cf5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59, skipping insertion in model container [2020-10-27 14:51:59,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:51:59" (1/1) ... [2020-10-27 14:51:59,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:51:59,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:51:59,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:51:59,636 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:51:59,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:51:59,674 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:51:59,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59 WrapperNode [2020-10-27 14:51:59,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:51:59,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:51:59,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:51:59,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:51:59,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59" (1/1) ... [2020-10-27 14:51:59,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59" (1/1) ... [2020-10-27 14:51:59,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59" (1/1) ... [2020-10-27 14:51:59,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59" (1/1) ... [2020-10-27 14:51:59,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59" (1/1) ... [2020-10-27 14:51:59,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59" (1/1) ... [2020-10-27 14:51:59,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59" (1/1) ... [2020-10-27 14:51:59,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:51:59,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:51:59,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:51:59,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:51:59,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59" (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 14:51:59,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:51:59,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:51:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:51:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:51:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:51:59,808 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:51:59,808 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:51:59,808 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:51:59,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:51:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:51:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:51:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:51:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:51:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:51:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:51:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:51:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:52:00,095 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:52:00,095 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:52:00,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:52:00 BoogieIcfgContainer [2020-10-27 14:52:00,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:52:00,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:52:00,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:52:00,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:52:00,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:51:59" (1/3) ... [2020-10-27 14:52:00,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d1bf7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:52:00, skipping insertion in model container [2020-10-27 14:52:00,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:59" (2/3) ... [2020-10-27 14:52:00,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d1bf7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:52:00, skipping insertion in model container [2020-10-27 14:52:00,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:52:00" (3/3) ... [2020-10-27 14:52:00,120 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_5.c [2020-10-27 14:52:00,133 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:52:00,138 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:52:00,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:52:00,190 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:52:00,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:52:00,191 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:52:00,191 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:52:00,191 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:52:00,192 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:52:00,192 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:52:00,192 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:52:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-27 14:52:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 14:52:00,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:00,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:52:00,228 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:00,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:00,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1115320526, now seen corresponding path program 1 times [2020-10-27 14:52:00,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:00,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214734813] [2020-10-27 14:52:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:01,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:01,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 14:52:01,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:52:01,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-10-27 14:52:01,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:01,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:52:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:52:01,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:01,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:01,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:01,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:52:01,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:52:01,311 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 14:52:01,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214734813] [2020-10-27 14:52:01,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:52:01,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:52:01,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727685193] [2020-10-27 14:52:01,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:52:01,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:01,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:52:01,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:52:01,351 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-27 14:52:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:01,457 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-10-27 14:52:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:52:01,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-27 14:52:01,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:01,467 INFO L225 Difference]: With dead ends: 46 [2020-10-27 14:52:01,468 INFO L226 Difference]: Without dead ends: 21 [2020-10-27 14:52:01,471 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 [2020-10-27 14:52:01,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-27 14:52:01,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-27 14:52:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-27 14:52:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-27 14:52:01,516 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2020-10-27 14:52:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:01,517 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-27 14:52:01,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:52:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-27 14:52:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 14:52:01,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:01,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:52:01,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:52:01,519 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:01,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:01,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1586809383, now seen corresponding path program 1 times [2020-10-27 14:52:01,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:01,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393174841] [2020-10-27 14:52:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:01,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:01,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 14:52:01,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:52:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-27 14:52:01,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:01,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:52:01,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:52:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:52:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:52:02,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:02,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:02,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:02,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:52:02,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:52:02,098 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 14:52:02,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393174841] [2020-10-27 14:52:02,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:52:02,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:52:02,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882467041] [2020-10-27 14:52:02,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:52:02,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:02,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:52:02,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:52:02,110 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 6 states. [2020-10-27 14:52:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:02,281 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2020-10-27 14:52:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:52:02,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 14:52:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:02,285 INFO L225 Difference]: With dead ends: 48 [2020-10-27 14:52:02,285 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:52:02,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:52:02,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:52:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-10-27 14:52:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 14:52:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-27 14:52:02,299 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2020-10-27 14:52:02,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:02,299 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-27 14:52:02,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:52:02,300 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-27 14:52:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 14:52:02,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:02,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:52:02,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:52:02,301 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash 510958729, now seen corresponding path program 1 times [2020-10-27 14:52:02,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:02,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033869210] [2020-10-27 14:52:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:02,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:52:03,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:52:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-27 14:52:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:52:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:52:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:52:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:03,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:03,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:03,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:03,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:52:03,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:52:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:52:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:03,704 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 14:52:03,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033869210] [2020-10-27 14:52:03,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:03,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:52:03,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427150539] [2020-10-27 14:52:03,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:52:03,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:03,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:52:03,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:52:03,707 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2020-10-27 14:52:03,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:03,861 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-10-27 14:52:03,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:52:03,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-27 14:52:03,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:03,864 INFO L225 Difference]: With dead ends: 47 [2020-10-27 14:52:03,864 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:52:03,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:52:03,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:52:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2020-10-27 14:52:03,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:52:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-27 14:52:03,874 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2020-10-27 14:52:03,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:03,875 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-27 14:52:03,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:52:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-27 14:52:03,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 14:52:03,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:03,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:52:03,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:52:03,876 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:03,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:03,877 INFO L82 PathProgramCache]: Analyzing trace with hash 568217031, now seen corresponding path program 1 times [2020-10-27 14:52:03,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:03,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618607581] [2020-10-27 14:52:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:03,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:03,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:04,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:04,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:52:04,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:52:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-27 14:52:04,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:52:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:52:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:52:04,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:04,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:52:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:52:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:52:04,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:52:04,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:52:04,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:52:04,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:52:04,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:52:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:52:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:52:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:52:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:52:04,242 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 14:52:04,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618607581] [2020-10-27 14:52:04,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:52:04,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:52:04,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569818225] [2020-10-27 14:52:04,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:52:04,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:52:04,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:52:04,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:52:04,245 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 6 states. [2020-10-27 14:52:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:52:04,414 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-10-27 14:52:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:52:04,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-27 14:52:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:52:04,416 INFO L225 Difference]: With dead ends: 53 [2020-10-27 14:52:04,416 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:52:04,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:52:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:52:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2020-10-27 14:52:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-27 14:52:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-27 14:52:04,424 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2020-10-27 14:52:04,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:52:04,424 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-27 14:52:04,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:52:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-27 14:52:04,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:52:04,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:52:04,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:52:04,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:52:04,426 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:52:04,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:52:04,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1810976411, now seen corresponding path program 1 times [2020-10-27 14:52:04,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:52:04,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600275313] [2020-10-27 14:52:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:52:04,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 14:52:04,438 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 14:52:04,438 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:52:04,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:52:04,458 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:52:04,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:52:04 BoogieIcfgContainer [2020-10-27 14:52:04,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:52:04,461 INFO L168 Benchmark]: Toolchain (without parser) took 5050.90 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 129.6 MB in the beginning and 94.1 MB in the end (delta: 35.5 MB). Peak memory consumption was 68.2 MB. Max. memory is 8.0 GB. [2020-10-27 14:52:04,462 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:52:04,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.10 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 119.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:52:04,463 INFO L168 Benchmark]: Boogie Preprocessor took 40.94 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 14:52:04,464 INFO L168 Benchmark]: RCFGBuilder took 379.04 ms. Allocated memory is still 154.1 MB. Free memory was 118.1 MB in the beginning and 103.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 14:52:04,465 INFO L168 Benchmark]: TraceAbstraction took 4346.19 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 137.4 MB in the beginning and 94.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 75.0 MB. Max. memory is 8.0 GB. [2020-10-27 14:52:04,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 257.10 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 119.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.94 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 379.04 ms. Allocated memory is still 154.1 MB. Free memory was 118.1 MB in the beginning and 103.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4346.19 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 137.4 MB in the beginning and 94.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 75.0 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=5; [L10] i=0 [L10] COND TRUE iN/2) [L10] i++ [L10] COND TRUE iN/2 [L13] a[i]=i%R [L10] i++ [L10] COND FALSE !(i