/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=0.2 --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-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:25:32,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:25:32,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:25:32,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:25:32,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:25:32,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:25:32,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:25:32,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:25:32,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:25:32,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:25:32,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:25:32,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:25:32,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:25:32,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:25:32,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:25:32,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:25:32,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:25:32,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:25:32,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:25:32,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:25:32,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:25:32,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:25:32,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:25:32,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:25:32,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:25:32,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:25:32,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:25:32,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:25:32,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:25:32,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:25:32,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:25:32,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:25:32,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:25:32,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:25:32,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:25:32,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:25:32,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:25:32,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:25:32,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:25:32,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:25:32,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:25:32,270 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 11:25:32,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:25:32,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:25:32,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:25:32,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:25:32,317 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:25:32,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:25:32,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:25:32,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:25:32,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:25:32,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:25:32,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:25:32,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:25:32,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:25:32,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:25:32,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:25:32,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:25:32,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:25:32,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:25:32,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:25:32,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:25:32,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:25:32,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:25:32,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:25:32,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:25:32,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:25:32,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:25:32,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:25:32,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:25:32,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:25:32,323 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:25:32,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:25:32,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:25:32,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:25:32,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:25:32,798 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:25:32,799 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-25 11:25:32,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2cf7667/16511ab446f7497c9ca5af3870f6b950/FLAGf9dfcd390 [2020-09-25 11:25:33,416 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:25:33,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-09-25 11:25:33,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2cf7667/16511ab446f7497c9ca5af3870f6b950/FLAGf9dfcd390 [2020-09-25 11:25:33,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2cf7667/16511ab446f7497c9ca5af3870f6b950 [2020-09-25 11:25:33,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:25:33,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:25:33,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:25:33,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:25:33,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:25:33,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:25:33" (1/1) ... [2020-09-25 11:25:33,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756d08d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:33, skipping insertion in model container [2020-09-25 11:25:33,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:25:33" (1/1) ... [2020-09-25 11:25:33,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:25:33,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:25:34,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:25:34,053 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:25:34,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:25:34,092 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:25:34,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34 WrapperNode [2020-09-25 11:25:34,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:25:34,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:25:34,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:25:34,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:25:34,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34" (1/1) ... [2020-09-25 11:25:34,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34" (1/1) ... [2020-09-25 11:25:34,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34" (1/1) ... [2020-09-25 11:25:34,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34" (1/1) ... [2020-09-25 11:25:34,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34" (1/1) ... [2020-09-25 11:25:34,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34" (1/1) ... [2020-09-25 11:25:34,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34" (1/1) ... [2020-09-25 11:25:34,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:25:34,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:25:34,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:25:34,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:25:34,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34" (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 11:25:34,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:25:34,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:25:34,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 11:25:34,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:25:34,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:25:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:25:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:25:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 11:25:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:25:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:25:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:25:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:25:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:25:34,554 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:25:34,554 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:25:34,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:25:34 BoogieIcfgContainer [2020-09-25 11:25:34,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:25:34,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:25:34,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:25:34,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:25:34,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:25:33" (1/3) ... [2020-09-25 11:25:34,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49189b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:25:34, skipping insertion in model container [2020-09-25 11:25:34,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:25:34" (2/3) ... [2020-09-25 11:25:34,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49189b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:25:34, skipping insertion in model container [2020-09-25 11:25:34,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:25:34" (3/3) ... [2020-09-25 11:25:34,601 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-09-25 11:25:34,616 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:25:34,624 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:25:34,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:25:34,675 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:25:34,676 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:25:34,676 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:25:34,676 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:25:34,676 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:25:34,676 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:25:34,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:25:34,677 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:25:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-25 11:25:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 11:25:34,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:34,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:34,707 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:34,714 INFO L82 PathProgramCache]: Analyzing trace with hash 394160949, now seen corresponding path program 1 times [2020-09-25 11:25:34,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:34,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077327743] [2020-09-25 11:25:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:34,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:25:34,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 11:25:34,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:34,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 11:25:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:34,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:25:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:34,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:34,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:25:34,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:34,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:34,987 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 11:25:34,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077327743] [2020-09-25 11:25:34,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:34,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 11:25:34,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593254079] [2020-09-25 11:25:34,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 11:25:35,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:35,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 11:25:35,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 11:25:35,022 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-09-25 11:25:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:35,054 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-25 11:25:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 11:25:35,056 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-09-25 11:25:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:35,068 INFO L225 Difference]: With dead ends: 53 [2020-09-25 11:25:35,068 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 11:25:35,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 11:25:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 11:25:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 11:25:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 11:25:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-09-25 11:25:35,118 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 23 [2020-09-25 11:25:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:35,119 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-09-25 11:25:35,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 11:25:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-09-25 11:25:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 11:25:35,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:35,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:35,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:25:35,122 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:35,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:35,122 INFO L82 PathProgramCache]: Analyzing trace with hash 79240288, now seen corresponding path program 1 times [2020-09-25 11:25:35,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:35,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699198757] [2020-09-25 11:25:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:25:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 11:25:35,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:35,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:25:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:25:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:25:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:35,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:35,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:35,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:35,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:35,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:25:35,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:35,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:35,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:35,723 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 11:25:35,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699198757] [2020-09-25 11:25:35,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:25:35,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 11:25:35,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195822146] [2020-09-25 11:25:35,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:25:35,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:35,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:25:35,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:25:35,728 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2020-09-25 11:25:35,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:35,945 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-09-25 11:25:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:25:35,946 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-25 11:25:35,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:35,947 INFO L225 Difference]: With dead ends: 40 [2020-09-25 11:25:35,947 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 11:25:35,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:25:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 11:25:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-25 11:25:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 11:25:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-25 11:25:35,957 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2020-09-25 11:25:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:35,958 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-25 11:25:35,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:25:35,958 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-25 11:25:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 11:25:35,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:35,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:35,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:25:35,960 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:35,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:35,960 INFO L82 PathProgramCache]: Analyzing trace with hash 821188708, now seen corresponding path program 1 times [2020-09-25 11:25:35,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:35,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795419450] [2020-09-25 11:25:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:36,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:36,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 11:25:36,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:36,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 11:25:36,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:36,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:25:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:25:36,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:25:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:36,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:36,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:36,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:25:36,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:36,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:25:36,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795419450] [2020-09-25 11:25:36,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:25:36,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:25:36,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365680563] [2020-09-25 11:25:36,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:25:36,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:36,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:25:36,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:25:36,674 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 14 states. [2020-09-25 11:25:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:37,012 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-25 11:25:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:25:37,013 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-09-25 11:25:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:37,014 INFO L225 Difference]: With dead ends: 48 [2020-09-25 11:25:37,015 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:25:37,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:25:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:25:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 11:25:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 11:25:37,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-09-25 11:25:37,023 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 31 [2020-09-25 11:25:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:37,024 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-09-25 11:25:37,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:25:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-09-25 11:25:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 11:25:37,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:37,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:37,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:25:37,027 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:37,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1866551400, now seen corresponding path program 2 times [2020-09-25 11:25:37,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:37,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119686188] [2020-09-25 11:25:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:37,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:37,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:25:37,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 11:25:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:37,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:25:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:25:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:25:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:37,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:37,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:37,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:37,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:37,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:25:37,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:37,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:37,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:25:37,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119686188] [2020-09-25 11:25:37,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:25:37,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 11:25:37,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463805031] [2020-09-25 11:25:37,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 11:25:37,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:37,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 11:25:37,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:25:37,885 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 19 states. [2020-09-25 11:25:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:38,757 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-25 11:25:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 11:25:38,762 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2020-09-25 11:25:38,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:38,763 INFO L225 Difference]: With dead ends: 54 [2020-09-25 11:25:38,763 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 11:25:38,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 11:25:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 11:25:38,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 11:25:38,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 11:25:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2020-09-25 11:25:38,780 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 39 [2020-09-25 11:25:38,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:38,784 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2020-09-25 11:25:38,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 11:25:38,784 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-09-25 11:25:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 11:25:38,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:25:38,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:25:38,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:25:38,786 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:25:38,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:25:38,787 INFO L82 PathProgramCache]: Analyzing trace with hash 472515692, now seen corresponding path program 3 times [2020-09-25 11:25:38,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:25:38,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533585410] [2020-09-25 11:25:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:25:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:38,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:39,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:39,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:25:39,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-25 11:25:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:39,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:25:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:25:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:25:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:39,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:25:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:25:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:25:39,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:25:39,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:25:39,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:25:39,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:25:39,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:25:39,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:25:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:25:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:25:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:25:39,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:25:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 11:25:39,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533585410] [2020-09-25 11:25:39,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:25:39,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:25:39,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951004198] [2020-09-25 11:25:39,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:25:39,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:25:39,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:25:39,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:25:39,648 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 16 states. [2020-09-25 11:25:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:25:40,044 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-09-25 11:25:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:25:40,044 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 11:25:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:25:40,045 INFO L225 Difference]: With dead ends: 48 [2020-09-25 11:25:40,045 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:25:40,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:25:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:25:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:25:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:25:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:25:40,048 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-25 11:25:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:25:40,048 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:25:40,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:25:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:25:40,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:25:40,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:25:40,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:25:40,152 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 11:25:40,153 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:25:40,153 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:25:40,153 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 11:25:40,153 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 11:25:40,153 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 11:25:40,153 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 11:25:40,153 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 11:25:40,154 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 11:25:40,154 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 11:25:40,154 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 11:25:40,154 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-09-25 11:25:40,154 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 11:25:40,154 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-09-25 11:25:40,154 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 11:25:40,154 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 11:25:40,155 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 11:25:40,155 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 11:25:40,155 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 11:25:40,155 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 11:25:40,155 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 11:25:40,155 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 11:25:40,155 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 11:25:40,156 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 11:25:40,156 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 11:25:40,156 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 11:25:40,156 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-09-25 11:25:40,156 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: true [2020-09-25 11:25:40,157 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2020-09-25 11:25:40,157 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 11:25:40,157 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 11:25:40,157 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (or (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0))) (not (= main_~i~0 main_~j~0))) [2020-09-25 11:25:40,158 INFO L268 CegarLoopResult]: For program point L22-3(lines 13 31) no Hoare annotation was computed. [2020-09-25 11:25:40,160 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 11:25:40,161 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 11:25:40,161 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 11:25:40,161 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 11:25:40,161 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 11:25:40,161 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 11:25:40,162 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 11:25:40,163 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 11:25:40,163 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 11:25:40,163 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 11:25:40,163 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 11:25:40,163 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 11:25:40,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:25:40 BoogieIcfgContainer [2020-09-25 11:25:40,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:25:40,194 INFO L168 Benchmark]: Toolchain (without parser) took 6418.59 ms. Allocated memory was 137.9 MB in the beginning and 283.6 MB in the end (delta: 145.8 MB). Free memory was 100.9 MB in the beginning and 180.5 MB in the end (delta: -79.6 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:40,196 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.5 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:25:40,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.28 ms. Allocated memory is still 137.9 MB. Free memory was 100.1 MB in the beginning and 90.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:40,207 INFO L168 Benchmark]: Boogie Preprocessor took 114.84 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.7 MB in the beginning and 180.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:40,208 INFO L168 Benchmark]: RCFGBuilder took 373.72 ms. Allocated memory is still 200.8 MB. Free memory was 180.4 MB in the beginning and 165.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:40,209 INFO L168 Benchmark]: TraceAbstraction took 5605.39 ms. Allocated memory was 200.8 MB in the beginning and 283.6 MB in the end (delta: 82.8 MB). Free memory was 164.6 MB in the beginning and 180.5 MB in the end (delta: -15.9 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:25:40,220 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.5 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.28 ms. Allocated memory is still 137.9 MB. Free memory was 100.1 MB in the beginning and 90.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.84 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.7 MB in the beginning and 180.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 373.72 ms. Allocated memory is still 200.8 MB. Free memory was 180.4 MB in the beginning and 165.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5605.39 ms. Allocated memory was 200.8 MB in the beginning and 283.6 MB in the end (delta: 82.8 MB). Free memory was 164.6 MB in the beginning and 180.5 MB in the end (delta: -15.9 MB). Peak memory consumption was 66.9 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: 22]: Loop Invariant Derived loop invariant: (y + z <= x && x <= y + z) || !(i == j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 77 SDslu, 536 SDs, 0 SdLazy, 569 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=4, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 32 HoareAnnotationTreeSize, 11 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 47830 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 16/38 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...