/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:31:57,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:31:57,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:31:57,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:31:57,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:31:57,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:31:57,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:31:57,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:31:57,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:31:57,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:31:57,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:31:57,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:31:57,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:31:57,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:31:57,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:31:57,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:31:57,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:31:57,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:31:57,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:31:57,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:31:57,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:31:57,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:31:57,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:31:57,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:31:57,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:31:57,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:31:57,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:31:57,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:31:57,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:31:57,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:31:57,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:31:57,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:31:57,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:31:57,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:31:57,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:31:57,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:31:57,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:31:57,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:31:57,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:31:57,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:31:57,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:31:57,189 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 [2020-09-25 12:31:57,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:31:57,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:31:57,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:31:57,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:31:57,217 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:31:57,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:31:57,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:31:57,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:31:57,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:31:57,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:31:57,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:31:57,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:31:57,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:31:57,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:31:57,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:31:57,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:31:57,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:31:57,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:31:57,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:31:57,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:31:57,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:31:57,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:31:57,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:31:57,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:31:57,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:31:57,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:31:57,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:31:57,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:31:57,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:31:57,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:31:57,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:31:57,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:31:57,717 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:31:57,718 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:31:57,720 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:31:57,721 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-09-25 12:31:57,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02edeece9/7a02170dd757463bb3a568f31b0005b7/FLAGd64f68e3b [2020-09-25 12:31:58,363 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:31:58,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-09-25 12:31:58,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02edeece9/7a02170dd757463bb3a568f31b0005b7/FLAGd64f68e3b [2020-09-25 12:31:58,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02edeece9/7a02170dd757463bb3a568f31b0005b7 [2020-09-25 12:31:58,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:31:58,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:31:58,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:31:58,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:31:58,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:31:58,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:58" (1/1) ... [2020-09-25 12:31:58,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbfc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:58, skipping insertion in model container [2020-09-25 12:31:58,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:58" (1/1) ... [2020-09-25 12:31:58,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:31:58,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:31:59,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:31:59,027 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:31:59,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:31:59,072 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:31:59,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59 WrapperNode [2020-09-25 12:31:59,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:31:59,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:31:59,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:31:59,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:31:59,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59" (1/1) ... [2020-09-25 12:31:59,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59" (1/1) ... [2020-09-25 12:31:59,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59" (1/1) ... [2020-09-25 12:31:59,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59" (1/1) ... [2020-09-25 12:31:59,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59" (1/1) ... [2020-09-25 12:31:59,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59" (1/1) ... [2020-09-25 12:31:59,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59" (1/1) ... [2020-09-25 12:31:59,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:31:59,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:31:59,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:31:59,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:31:59,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59" (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 [2020-09-25 12:31:59,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:31:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:31:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:31:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:31:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:31:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:31:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:31:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:31:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:31:59,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:31:59,530 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:31:59,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:59 BoogieIcfgContainer [2020-09-25 12:31:59,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:31:59,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:31:59,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:31:59,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:31:59,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:31:58" (1/3) ... [2020-09-25 12:31:59,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50efcd8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:59, skipping insertion in model container [2020-09-25 12:31:59,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:59" (2/3) ... [2020-09-25 12:31:59,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50efcd8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:59, skipping insertion in model container [2020-09-25 12:31:59,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:59" (3/3) ... [2020-09-25 12:31:59,546 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-09-25 12:31:59,559 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:31:59,570 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:31:59,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:31:59,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:31:59,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:31:59,638 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:31:59,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:31:59,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:31:59,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:31:59,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:31:59,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:31:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 12:31:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 12:31:59,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:59,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:31:59,699 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:59,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:59,708 INFO L82 PathProgramCache]: Analyzing trace with hash -420526341, now seen corresponding path program 1 times [2020-09-25 12:31:59,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:59,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573072867] [2020-09-25 12:31:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:00,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:00,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:32:00,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-09-25 12:32:00,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:00,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:32:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:32:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:32:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:32:00,945 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-09-25 12:32:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:01,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:01,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:01,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:01,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:01,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:01,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:01,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:01,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:01,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573072867] [2020-09-25 12:32:01,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:32:01,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 12:32:01,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325307740] [2020-09-25 12:32:01,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:32:01,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:01,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:32:01,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:32:01,054 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 10 states. [2020-09-25 12:32:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:01,299 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-09-25 12:32:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:32:01,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-25 12:32:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:01,313 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:32:01,313 INFO L226 Difference]: Without dead ends: 29 [2020-09-25 12:32:01,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:32:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-25 12:32:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-09-25 12:32:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-25 12:32:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-25 12:32:01,376 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 15 [2020-09-25 12:32:01,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:01,377 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-25 12:32:01,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:32:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-25 12:32:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 12:32:01,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:01,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:01,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:32:01,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:01,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:01,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1780540834, now seen corresponding path program 1 times [2020-09-25 12:32:01,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:01,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646223381] [2020-09-25 12:32:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:03,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:03,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 12:32:03,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1930 [2020-09-25 12:32:03,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:03,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:03,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:32:03,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:32:03,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:32:03,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:32:04,012 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 36 [2020-09-25 12:32:04,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:04,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:04,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:04,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:04,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:32:04,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:04,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:04,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:04,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:32:04,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:32:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:04,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:04,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:04,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:04,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 12:32:04,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:04,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:04,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 12:32:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:32:04,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646223381] [2020-09-25 12:32:04,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:04,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:32:04,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499392928] [2020-09-25 12:32:04,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:32:04,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:04,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:32:04,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:32:04,150 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 13 states. [2020-09-25 12:32:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:04,364 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-25 12:32:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:32:04,365 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-09-25 12:32:04,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:04,367 INFO L225 Difference]: With dead ends: 40 [2020-09-25 12:32:04,368 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 12:32:04,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:32:04,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 12:32:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 12:32:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 12:32:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-09-25 12:32:04,378 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 24 [2020-09-25 12:32:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:04,379 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-09-25 12:32:04,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:32:04,379 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-09-25 12:32:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:32:04,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:32:04,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:32:04,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:32:04,382 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:32:04,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:32:04,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1647717669, now seen corresponding path program 2 times [2020-09-25 12:32:04,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:32:04,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620478833] [2020-09-25 12:32:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:32:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:04,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:05,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:09,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:09,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:32:09,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:32:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:32:09,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:09,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:32:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:32:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:32:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:17,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:32:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:17,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:17,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:32:17,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:32:17,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:17,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:32:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:17,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:32:17,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:32:17,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:32:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:17,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:17,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:17,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:32:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:32:17,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:17,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:32:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:32:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:17,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 12:32:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:32:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:32:17,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:32:17,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 12:32:17,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:32:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 12:32:17,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:32:17,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:32:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:32:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:32:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:32:17,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:32:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 4 refuted. 3 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 12:32:18,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620478833] [2020-09-25 12:32:18,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:32:18,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:32:18,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456438277] [2020-09-25 12:32:18,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:32:18,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:32:18,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:32:18,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=70, Unknown=2, NotChecked=0, Total=90 [2020-09-25 12:32:18,003 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 10 states. [2020-09-25 12:32:36,812 WARN L193 SmtUtils]: Spent 12.44 s on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-25 12:32:44,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:32:44,190 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-25 12:32:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:32:44,191 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-09-25 12:32:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:32:44,192 INFO L225 Difference]: With dead ends: 36 [2020-09-25 12:32:44,192 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:32:44,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=33, Invalid=119, Unknown=4, NotChecked=0, Total=156 [2020-09-25 12:32:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:32:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:32:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:32:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:32:44,194 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-09-25 12:32:44,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:32:44,194 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:32:44,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:32:44,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:32:44,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:32:44,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:32:44,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:32:51,370 WARN L193 SmtUtils]: Spent 7.10 s on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2020-09-25 12:33:03,749 WARN L193 SmtUtils]: Spent 12.37 s on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2020-09-25 12:33:03,760 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 12:33:03,760 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:33:03,760 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:33:03,760 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:33:03,760 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:33:03,760 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:33:03,761 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-25 12:33:03,761 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-25 12:33:03,761 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse2 (* 2 main_~j~0)) (.cse3 (* main_~i~0 2))) (let ((.cse1 (+ (* 4294967296 (div (* main_~i~0 3) 4294967296)) main_~i~0 (* 8589934592 (div main_~j~0 4294967296)) main_~k~0)) (.cse0 (+ .cse2 (* 8589934592 (div .cse3 4294967296)) (* 4294967296 (div main_~k~0 4294967296))))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= (+ .cse2 (* 4294967296 (div (+ main_~i~0 (* main_~j~0 (- 2)) main_~k~0 4294967295) 4294967296))) (+ main_~i~0 main_~k~0)) (<= (* 2 main_~i~0) (+ main_~j~0 (* 4294967296 (div (+ .cse3 (* main_~j~0 (- 1))) 4294967296))))))) [2020-09-25 12:33:03,761 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 12:33:03,762 INFO L264 CegarLoopResult]: At program point L23-1(lines 19 24) the Hoare annotation is: (and (<= (+ (* 2 main_~j~0) (* 4294967296 (div (+ main_~i~0 (* main_~j~0 (- 2)) main_~k~0 4294967295) 4294967296))) (+ main_~i~0 main_~k~0)) (<= (* 2 main_~i~0) (+ main_~j~0 (* 4294967296 (div (+ (* main_~i~0 2) (* main_~j~0 (- 1))) 4294967296))))) [2020-09-25 12:33:03,762 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 12:33:03,762 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 12:33:03,762 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 12:33:03,762 INFO L268 CegarLoopResult]: For program point L19-2(lines 13 26) no Hoare annotation was computed. [2020-09-25 12:33:03,762 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 12:33:03,762 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2020-09-25 12:33:03,763 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed. [2020-09-25 12:33:03,763 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 12:33:03,763 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 12:33:03,763 INFO L268 CegarLoopResult]: For program point L7-2(lines 5 11) no Hoare annotation was computed. [2020-09-25 12:33:03,763 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 12:33:03,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:33:03 BoogieIcfgContainer [2020-09-25 12:33:03,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:33:03,787 INFO L168 Benchmark]: Toolchain (without parser) took 65042.06 ms. Allocated memory was 139.5 MB in the beginning and 333.4 MB in the end (delta: 194.0 MB). Free memory was 102.7 MB in the beginning and 215.7 MB in the end (delta: -113.0 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:03,788 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:33:03,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.94 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:03,790 INFO L168 Benchmark]: Boogie Preprocessor took 171.81 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 92.7 MB in the beginning and 184.0 MB in the end (delta: -91.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:03,790 INFO L168 Benchmark]: RCFGBuilder took 289.39 ms. Allocated memory is still 205.0 MB. Free memory was 184.0 MB in the beginning and 172.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:03,791 INFO L168 Benchmark]: TraceAbstraction took 64247.50 ms. Allocated memory was 205.0 MB in the beginning and 333.4 MB in the end (delta: 128.5 MB). Free memory was 172.1 MB in the beginning and 215.7 MB in the end (delta: -43.6 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2020-09-25 12:33:03,795 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.94 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.81 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 92.7 MB in the beginning and 184.0 MB in the end (delta: -91.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.39 ms. Allocated memory is still 205.0 MB. Free memory was 184.0 MB in the beginning and 172.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 64247.50 ms. Allocated memory was 205.0 MB in the beginning and 333.4 MB in the end (delta: 128.5 MB). Free memory was 172.1 MB in the beginning and 215.7 MB in the end (delta: -43.6 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 2 * j + 4294967296 * ((i + j * -2 + k + 4294967295) / 4294967296) <= i + k && 2 * i <= j + 4294967296 * ((i * 2 + j * -1) / 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 44.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 26.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 19.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 35 SDslu, 247 SDs, 0 SdLazy, 288 SolverSat, 8 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 143 HoareAnnotationTreeSize, 10 FomulaSimplifications, 303 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 214 FormulaSimplificationTreeSizeReductionInter, 19.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 33860 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 18/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...