/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:17:06,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:17:06,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:17:06,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:17:06,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:17:06,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:17:06,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:17:06,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:17:06,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:17:06,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:17:06,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:17:06,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:17:06,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:17:06,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:17:06,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:17:06,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:17:06,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:17:06,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:17:06,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:17:06,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:17:06,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:17:06,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:17:06,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:17:06,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:17:06,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:17:06,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:17:06,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:17:06,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:17:06,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:17:06,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:17:06,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:17:06,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:17:06,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:17:06,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:17:06,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:17:06,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:17:06,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:17:06,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:17:06,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:17:06,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:17:06,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:17:06,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:17:06,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:17:06,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:17:06,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:17:06,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:17:06,501 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:17:06,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:17:06,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:17:06,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:17:06,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:17:06,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:17:06,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:17:06,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:17:06,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:17:06,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:17:06,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:17:06,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:17:06,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:17:06,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:17:06,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:17:06,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:17:06,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:17:06,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:17:06,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:17:06,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:17:06,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:17:06,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:17:06,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:17:06,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:17:06,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:17:06,506 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:17:06,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:17:06,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:17:06,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:17:06,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:17:06,875 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:17:06,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-10-14 05:17:06,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4e0095e6/18e2971f5e264544882b2cc685e27391/FLAG7e308d42d [2020-10-14 05:17:07,444 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:17:07,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-10-14 05:17:07,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4e0095e6/18e2971f5e264544882b2cc685e27391/FLAG7e308d42d [2020-10-14 05:17:07,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4e0095e6/18e2971f5e264544882b2cc685e27391 [2020-10-14 05:17:07,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:17:07,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:17:07,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:17:07,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:17:07,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:17:07,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:17:07" (1/1) ... [2020-10-14 05:17:07,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e85a8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:07, skipping insertion in model container [2020-10-14 05:17:07,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:17:07" (1/1) ... [2020-10-14 05:17:07,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:17:07,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:17:08,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:17:08,156 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:17:08,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:17:08,198 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:17:08,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08 WrapperNode [2020-10-14 05:17:08,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:17:08,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:17:08,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:17:08,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:17:08,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08" (1/1) ... [2020-10-14 05:17:08,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08" (1/1) ... [2020-10-14 05:17:08,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08" (1/1) ... [2020-10-14 05:17:08,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08" (1/1) ... [2020-10-14 05:17:08,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08" (1/1) ... [2020-10-14 05:17:08,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08" (1/1) ... [2020-10-14 05:17:08,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08" (1/1) ... [2020-10-14 05:17:08,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:17:08,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:17:08,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:17:08,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:17:08,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:17:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:17:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:17:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:17:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:17:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:17:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:17:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:17:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:17:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:17:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 05:17:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:17:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:17:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:17:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:17:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:17:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:17:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:17:08,697 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:17:08,697 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 05:17:08,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:17:08 BoogieIcfgContainer [2020-10-14 05:17:08,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:17:08,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:17:08,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:17:08,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:17:08,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:17:07" (1/3) ... [2020-10-14 05:17:08,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314f14d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:17:08, skipping insertion in model container [2020-10-14 05:17:08,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:08" (2/3) ... [2020-10-14 05:17:08,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314f14d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:17:08, skipping insertion in model container [2020-10-14 05:17:08,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:17:08" (3/3) ... [2020-10-14 05:17:08,710 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2020-10-14 05:17:08,719 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:17:08,726 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:17:08,739 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:17:08,758 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:17:08,758 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:17:08,758 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:17:08,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:17:08,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:17:08,759 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:17:08,759 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:17:08,759 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:17:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 05:17:08,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:17:08,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:08,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:17:08,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:08,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:08,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1561713717, now seen corresponding path program 1 times [2020-10-14 05:17:08,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:08,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806510819] [2020-10-14 05:17:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:08,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:09,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:09,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:17:09,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:17:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 05:17:09,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:09,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:09,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 05:17:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:09,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 05:17:09,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:09,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:09,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:09,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:09,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:17:09,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:09,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:09,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:09,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:17:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:09,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:09,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:09,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:17:09,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:17:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:09,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:17:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:09,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:09,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:09,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:09,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:17:09,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:09,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:17:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:17:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:17:09,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806510819] [2020-10-14 05:17:09,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:17:09,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:17:09,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049425018] [2020-10-14 05:17:09,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:17:09,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:09,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:17:09,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:17:09,250 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-14 05:17:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:09,387 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2020-10-14 05:17:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:17:09,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 05:17:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:09,399 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:17:09,400 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 05:17:09,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:17:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 05:17:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 05:17:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 05:17:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 05:17:09,454 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 22 [2020-10-14 05:17:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:09,455 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 05:17:09,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:17:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 05:17:09,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:17:09,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:09,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:17:09,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:17:09,459 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:09,460 INFO L82 PathProgramCache]: Analyzing trace with hash -258750159, now seen corresponding path program 1 times [2020-10-14 05:17:09,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:09,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794220900] [2020-10-14 05:17:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:09,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:09,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:09,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:17:09,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:17:09,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-14 05:17:09,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:09,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:09,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:17:09,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 05:17:09,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:17:09,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:10,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:10,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:10,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:10,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:17:10,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:10,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:17:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:17:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:10,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:10,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:17:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:10,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:17:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:17:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:17:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:10,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:10,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:10,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:17:10,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:10,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:17:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:17:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:17:10,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794220900] [2020-10-14 05:17:10,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:17:10,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 05:17:10,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949000979] [2020-10-14 05:17:10,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:17:10,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:10,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:17:10,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:17:10,241 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2020-10-14 05:17:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:10,536 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-10-14 05:17:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:17:10,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-14 05:17:10,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:10,539 INFO L225 Difference]: With dead ends: 43 [2020-10-14 05:17:10,539 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 05:17:10,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:17:10,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 05:17:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2020-10-14 05:17:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 05:17:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-14 05:17:10,553 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 22 [2020-10-14 05:17:10,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:10,553 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-14 05:17:10,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:17:10,554 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-14 05:17:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:17:10,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:10,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:17:10,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:17:10,556 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:10,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1843057556, now seen corresponding path program 1 times [2020-10-14 05:17:10,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:10,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737798655] [2020-10-14 05:17:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:10,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:10,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:10,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:17:10,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:10,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:17:10,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:10,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:17:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:17:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:17:10,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:10,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:10,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:10,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:17:10,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:10,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:17:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:10,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:10,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:10,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:10,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:10,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:17:10,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:10,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:17:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:17:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:17:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:10,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:10,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:10,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:17:10,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:10,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:17:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:17:10,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:17:10,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737798655] [2020-10-14 05:17:10,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:17:10,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:17:10,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425942538] [2020-10-14 05:17:10,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:17:10,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:10,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:17:10,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:17:10,737 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 4 states. [2020-10-14 05:17:10,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:10,839 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-14 05:17:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:17:10,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-14 05:17:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:10,842 INFO L225 Difference]: With dead ends: 47 [2020-10-14 05:17:10,842 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 05:17:10,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:17:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 05:17:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-14 05:17:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 05:17:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-14 05:17:10,852 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 24 [2020-10-14 05:17:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:10,853 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-14 05:17:10,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:17:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-14 05:17:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 05:17:10,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:10,855 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:17:10,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:17:10,856 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:10,856 INFO L82 PathProgramCache]: Analyzing trace with hash -828791972, now seen corresponding path program 1 times [2020-10-14 05:17:10,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:10,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314977247] [2020-10-14 05:17:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:11,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:11,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:11,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:17:11,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:17:11,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-14 05:17:11,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:11,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:17:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 05:17:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:17:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:12,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:12,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:12,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:17:12,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:12,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:12,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:17:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:12,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:12,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:12,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:17:12,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:12,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:12,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:17:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:12,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:12,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:12,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:12,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:17:12,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:12,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:12,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:17:12,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:12,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:17:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:17:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:12,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:12,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:12,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:17:12,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:12,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:17:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:17:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:12,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:17:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:12,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:12,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:12,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:12,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:12,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:17:12,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:12,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:17:12,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:12,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:17:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:17:12,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314977247] [2020-10-14 05:17:12,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:17:12,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:17:12,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770401399] [2020-10-14 05:17:12,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:17:12,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:12,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:17:12,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:17:12,173 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 10 states. [2020-10-14 05:17:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:12,572 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-10-14 05:17:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:17:12,573 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-14 05:17:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:12,574 INFO L225 Difference]: With dead ends: 49 [2020-10-14 05:17:12,574 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 05:17:12,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:17:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 05:17:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2020-10-14 05:17:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:17:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-14 05:17:12,583 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 35 [2020-10-14 05:17:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:12,584 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-14 05:17:12,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:17:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-14 05:17:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:17:12,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:12,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2020-10-14 05:17:12,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:17:12,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash -506278145, now seen corresponding path program 1 times [2020-10-14 05:17:12,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:12,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830491636] [2020-10-14 05:17:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:13,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:13,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 05:17:13,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-14 05:17:13,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:13,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:17:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 05:17:13,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:17:13,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-14 05:17:13,490 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2020-10-14 05:17:13,998 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 62 [2020-10-14 05:17:14,617 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 69 [2020-10-14 05:17:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:14,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:14,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:14,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:17:14,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:14,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:14,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:17:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:14,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:14,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:14,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:17:14,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:14,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:14,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:17:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:14,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:14,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:14,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:14,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:14,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:17:14,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:14,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:17:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:14,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:14,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:14,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:17:14,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:14,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:14,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:17:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:17:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:17:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:17:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:14,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:14,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:14,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 05:17:14,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:14,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:17:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:17:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:17:14,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830491636] [2020-10-14 05:17:14,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:17:14,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:17:14,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217402640] [2020-10-14 05:17:14,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:17:14,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:14,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:17:14,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:17:14,919 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 12 states. [2020-10-14 05:17:15,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:15,562 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-10-14 05:17:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:17:15,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-14 05:17:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:15,564 INFO L225 Difference]: With dead ends: 42 [2020-10-14 05:17:15,564 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 05:17:15,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:17:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 05:17:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 05:17:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 05:17:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-14 05:17:15,574 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 37 [2020-10-14 05:17:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:15,574 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-14 05:17:15,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:17:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-14 05:17:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:17:15,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:17:15,576 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1] [2020-10-14 05:17:15,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:17:15,577 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:17:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:17:15,577 INFO L82 PathProgramCache]: Analyzing trace with hash 170703353, now seen corresponding path program 1 times [2020-10-14 05:17:15,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:17:15,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901057710] [2020-10-14 05:17:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:17:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:16,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:16,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:17:16,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:17:16,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-14 05:17:16,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:16,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:16,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:17:16,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 05:17:16,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:17:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:17:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:16,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:16,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:16,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:17:16,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:16,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:17:16,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:16,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:16,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:16,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:17:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:16,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:16,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:16,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:17:16,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:16,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:16,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:16,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:17:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:16,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:16,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:16,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:16,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:17:16,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:16,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:17:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:17:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:16,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:17:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:16,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:16,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:16,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:17:16,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:16,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:17:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:17:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:17:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:16,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:16,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:16,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:16,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:17:16,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:16,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:17:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:17:16,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:17:16,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:17:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:17:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:17:16,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:17:16,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:17:16,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:17:16,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:17:16,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:17:16,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:17:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:17:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:17:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:17:16,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:17:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 05:17:16,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901057710] [2020-10-14 05:17:16,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:17:16,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:17:16,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567984292] [2020-10-14 05:17:16,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:17:16,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:17:16,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:17:16,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:17:16,491 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2020-10-14 05:17:18,676 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-14 05:17:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:17:18,763 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-14 05:17:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:17:18,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-14 05:17:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:17:18,765 INFO L225 Difference]: With dead ends: 45 [2020-10-14 05:17:18,765 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:17:18,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:17:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:17:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:17:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:17:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:17:18,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-10-14 05:17:18,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:17:18,768 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:17:18,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:17:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:17:18,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:17:18,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:17:18,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:17:46,116 WARN L193 SmtUtils]: Spent 27.23 s on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2020-10-14 05:17:46,374 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-10-14 05:17:46,576 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2020-10-14 05:17:59,243 WARN L193 SmtUtils]: Spent 12.64 s on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-14 05:17:59,263 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:17:59,263 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 05:17:59,264 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:17:59,264 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:17:59,264 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:17:59,264 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:17:59,264 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:17:59,264 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true [2020-10-14 05:17:59,264 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-14 05:17:59,264 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-10-14 05:17:59,264 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-10-14 05:17:59,264 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 22 50) no Hoare annotation was computed. [2020-10-14 05:17:59,265 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 22 50) no Hoare annotation was computed. [2020-10-14 05:17:59,265 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse1 (* 4294967296 (div |main_#t~mem6| 4294967296))) (.cse0 (+ |main_#t~mem6| (* 4294967296 (div |main_#t~mem7| 4294967296))))) (and (< .cse0 (+ |main_#t~mem7| .cse1 1)) (<= (+ |main_#t~mem7| .cse1) .cse0) (<= (+ (* 4294967296 (div (+ (* (div (+ main_~index2~0 1) 4294967296) 4294967296) (* main_~index2~0 (- 1)) main_~index1~0 4294967294) 4294967296)) 1) main_~index1~0) (let ((.cse17 (div main_~index2~0 4294967296)) (.cse16 (div main_~index1~0 4294967296))) (let ((.cse3 (* 4294967296 .cse16)) (.cse7 (select |#memory_int| |main_~#array~0.base|)) (.cse14 (* .cse17 (- 17179869184))) (.cse15 (* main_~index2~0 4))) (let ((.cse6 (select .cse7 (+ .cse14 .cse15 |main_~#array~0.offset|))) (.cse2 (* 4294967296 .cse17)) (.cse8 (* .cse16 (- 17179869184))) (.cse9 (* main_~index1~0 4)) (.cse4 (+ .cse3 2147483647))) (or (<= (+ .cse2 main_~index1~0) (+ .cse3 main_~index2~0)) (and (<= main_~index1~0 .cse4) (<= (let ((.cse5 (select .cse7 (+ .cse8 .cse9 |main_~#array~0.offset|)))) (+ .cse5 (* 4294967296 (div (+ (* .cse5 (- 1)) .cse6 4294967295) 4294967296)))) .cse6)) (and (let ((.cse11 (select .cse7 (+ .cse8 .cse9 |main_~#array~0.offset| (- 17179869184))))) (let ((.cse10 (+ .cse2 2147483647)) (.cse13 (* .cse11 (- 1)))) (or (and (< .cse10 main_~index2~0) (let ((.cse12 (select .cse7 (+ .cse14 .cse15 |main_~#array~0.offset| (- 17179869184))))) (<= (+ .cse11 (* 4294967296 (div (+ .cse12 .cse13 4294967295) 4294967296))) .cse12))) (and (<= main_~index2~0 .cse10) (<= (+ .cse11 (* 4294967296 (div (+ .cse6 .cse13 4294967295) 4294967296))) .cse6))))) (< .cse4 main_~index1~0)))))))) [2020-10-14 05:17:59,265 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-10-14 05:17:59,265 INFO L268 CegarLoopResult]: For program point L42(lines 42 48) no Hoare annotation was computed. [2020-10-14 05:17:59,266 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (div main_~index2~0 4294967296))) (let ((.cse0 (select |#memory_int| |main_~#array~0.base|)) (.cse3 (* 4294967296 .cse1)) (.cse2 (div main_~index1~0 4294967296))) (and (= (select .cse0 (+ (* .cse1 (- 17179869184)) (* main_~index2~0 4) |main_~#array~0.offset|)) |main_#t~mem3|) (= (select .cse0 (+ (* .cse2 (- 17179869184)) (* main_~index1~0 4) |main_~#array~0.offset|)) |main_#t~mem2|) (<= main_~index2~0 (+ .cse3 99999)) (<= (+ .cse3 main_~index1~0 1) (+ (* 4294967296 .cse2) main_~index2~0))))) [2020-10-14 05:17:59,266 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-10-14 05:17:59,266 INFO L264 CegarLoopResult]: At program point L34-1(lines 32 40) the Hoare annotation is: (let ((.cse5 (div main_~index1~0 4294967296)) (.cse6 (div main_~index2~0 4294967296))) (let ((.cse1 (* 4294967296 .cse6)) (.cse0 (* 4294967296 .cse5))) (or (and (<= main_~loop_entered~0 (* 4294967296 (div main_~loop_entered~0 4294967296))) (<= main_~index1~0 (+ .cse0 99999)) (<= main_~index2~0 (+ .cse1 99999)) (<= 0 main_~loop_entered~0)) (and (<= main_~index2~0 (+ .cse1 99998)) (or (<= (+ .cse1 main_~index1~0) (+ .cse0 main_~index2~0)) (and (<= main_~index1~0 (+ .cse0 2147483647)) (let ((.cse4 (select |#memory_int| |main_~#array~0.base|))) (let ((.cse3 (select .cse4 (+ (* .cse6 (- 17179869184)) (* main_~index2~0 4) |main_~#array~0.offset|)))) (<= (let ((.cse2 (select .cse4 (+ (* .cse5 (- 17179869184)) (* main_~index1~0 4) |main_~#array~0.offset|)))) (+ .cse2 (* 4294967296 (div (+ (* .cse2 (- 1)) .cse3 4294967295) 4294967296)))) .cse3))))) (<= (+ (* 4294967296 (div (+ (* (div (+ main_~index2~0 1) 4294967296) 4294967296) (* main_~index2~0 (- 1)) main_~index1~0 4294967294) 4294967296)) 1) main_~index1~0))))) [2020-10-14 05:17:59,266 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (and (<= main_~loop_entered~0 (* 4294967296 (div main_~loop_entered~0 4294967296))) (<= main_~index1~0 (+ (* 4294967296 (div main_~index1~0 4294967296)) 99999)) (<= 0 main_~loop_entered~0)) [2020-10-14 05:17:59,266 INFO L268 CegarLoopResult]: For program point L34-2(lines 23 50) no Hoare annotation was computed. [2020-10-14 05:17:59,266 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= main_~loop_entered~0 (* 4294967296 (div main_~loop_entered~0 4294967296))) (<= 0 main_~loop_entered~0)) [2020-10-14 05:17:59,267 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 22 50) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-14 05:17:59,267 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-10-14 05:17:59,267 INFO L264 CegarLoopResult]: At program point L43-2(lines 43 47) the Hoare annotation is: (let ((.cse14 (div main_~index1~0 4294967296)) (.cse15 (div main_~index2~0 4294967296))) (let ((.cse12 (* 4294967296 .cse15)) (.cse13 (* 4294967296 .cse14))) (or (and (let ((.cse3 (select |#memory_int| |main_~#array~0.base|)) (.cse10 (* .cse15 (- 17179869184))) (.cse11 (* main_~index2~0 4))) (let ((.cse2 (select .cse3 (+ .cse10 .cse11 |main_~#array~0.offset|))) (.cse4 (* .cse14 (- 17179869184))) (.cse5 (* main_~index1~0 4)) (.cse0 (+ .cse13 2147483647))) (or (and (<= main_~index1~0 .cse0) (<= (let ((.cse1 (select .cse3 (+ .cse4 .cse5 |main_~#array~0.offset|)))) (+ .cse1 (* 4294967296 (div (+ (* .cse1 (- 1)) .cse2 4294967295) 4294967296)))) .cse2)) (and (let ((.cse7 (select .cse3 (+ .cse4 .cse5 |main_~#array~0.offset| (- 17179869184))))) (let ((.cse6 (+ .cse12 2147483647)) (.cse9 (* .cse7 (- 1)))) (or (and (< .cse6 main_~index2~0) (let ((.cse8 (select .cse3 (+ .cse10 .cse11 |main_~#array~0.offset| (- 17179869184))))) (<= (+ .cse7 (* 4294967296 (div (+ .cse8 .cse9 4294967295) 4294967296))) .cse8))) (and (<= main_~index2~0 .cse6) (<= (+ .cse7 (* 4294967296 (div (+ .cse2 .cse9 4294967295) 4294967296))) .cse2))))) (< .cse0 main_~index1~0))))) (<= (+ (* 4294967296 (div (+ (* (div (+ main_~index2~0 1) 4294967296) 4294967296) (* main_~index2~0 (- 1)) main_~index1~0 4294967294) 4294967296)) 1) main_~index1~0)) (<= (+ .cse12 main_~index1~0 1) (+ .cse13 main_~index2~0))))) [2020-10-14 05:17:59,267 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~index2~0 4294967296)))) (and (or (<= main_~index2~0 (+ .cse0 99998)) (and (<= main_~loop_entered~0 (* 4294967296 (div main_~loop_entered~0 4294967296))) (<= main_~index2~0 (+ .cse0 99999)) (<= 0 main_~loop_entered~0))) (<= (+ .cse0 main_~index1~0 1) (+ (* 4294967296 (div main_~index1~0 4294967296)) main_~index2~0)))) [2020-10-14 05:17:59,267 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-10-14 05:17:59,267 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-14 05:17:59,267 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2020-10-14 05:17:59,267 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-14 05:17:59,268 INFO L268 CegarLoopResult]: For program point L14-2(lines 12 18) no Hoare annotation was computed. [2020-10-14 05:17:59,268 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2020-10-14 05:17:59,268 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-10-14 05:17:59,280 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,281 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,281 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,281 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,292 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,293 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,293 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,293 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,293 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,294 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,294 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,294 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,295 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,295 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,295 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,295 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,297 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,298 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,298 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,298 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,298 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,300 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:17:59 BoogieIcfgContainer [2020-10-14 05:17:59,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:17:59,305 INFO L168 Benchmark]: Toolchain (without parser) took 51427.27 ms. Allocated memory was 147.3 MB in the beginning and 324.5 MB in the end (delta: 177.2 MB). Free memory was 103.5 MB in the beginning and 204.1 MB in the end (delta: -100.7 MB). Peak memory consumption was 163.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:17:59,306 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 05:17:59,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.89 ms. Allocated memory is still 147.3 MB. Free memory was 103.5 MB in the beginning and 92.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:17:59,308 INFO L168 Benchmark]: Boogie Preprocessor took 120.77 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 92.9 MB in the beginning and 180.2 MB in the end (delta: -87.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:17:59,309 INFO L168 Benchmark]: RCFGBuilder took 381.33 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 163.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:17:59,310 INFO L168 Benchmark]: TraceAbstraction took 50600.26 ms. Allocated memory was 202.4 MB in the beginning and 324.5 MB in the end (delta: 122.2 MB). Free memory was 162.2 MB in the beginning and 204.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 167.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:17:59,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.89 ms. Allocated memory is still 147.3 MB. Free memory was 103.5 MB in the beginning and 92.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.77 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 92.9 MB in the beginning and 180.2 MB in the end (delta: -87.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.33 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 163.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50600.26 ms. Allocated memory was 202.4 MB in the beginning and 324.5 MB in the end (delta: 122.2 MB). Free memory was 162.2 MB in the beginning and 204.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 167.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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: 32]: Loop Invariant [2020-10-14 05:17:59,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,328 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((loop_entered <= 4294967296 * (loop_entered / 4294967296) && index1 <= 4294967296 * (index1 / 4294967296) + 99999) && index2 <= 4294967296 * (index2 / 4294967296) + 99999) && 0 <= loop_entered) || ((index2 <= 4294967296 * (index2 / 4294967296) + 99998 && (4294967296 * (index2 / 4294967296) + index1 <= 4294967296 * (index1 / 4294967296) + index2 || (index1 <= 4294967296 * (index1 / 4294967296) + 2147483647 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] + 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array]))) && 4294967296 * (((index2 + 1) / 4294967296 * 4294967296 + index2 * -1 + index1 + 4294967294) / 4294967296) + 1 <= index1) - InvariantResult [Line: 43]: Loop Invariant [2020-10-14 05:17:59,330 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 05:17:59,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((index1 <= 4294967296 * (index1 / 4294967296) + 2147483647 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] + 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array]) || (((4294967296 * (index2 / 4294967296) + 2147483647 < index2 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] + 4294967296 * ((unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array + -17179869184] + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] * -1 + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array + -17179869184]) || (index2 <= 4294967296 * (index2 / 4294967296) + 2147483647 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] + 4294967296 * ((unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] * -1 + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array])) && 4294967296 * (index1 / 4294967296) + 2147483647 < index1)) && 4294967296 * (((index2 + 1) / 4294967296 * 4294967296 + index2 * -1 + index1 + 4294967294) / 4294967296) + 1 <= index1) || 4294967296 * (index2 / 4294967296) + index1 + 1 <= 4294967296 * (index1 / 4294967296) + index2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 40.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 157 SDtfs, 97 SDslu, 276 SDs, 0 SdLazy, 628 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=5, 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, 6 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 24 PreInvPairs, 34 NumberOfFragments, 905 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 13 FomulaSimplificationsInter, 1561 FormulaSimplificationTreeSizeReductionInter, 40.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 99019 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 61/66 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...